diff --git a/README.md b/README.md index 5ad2025..cd9c886 100644 --- a/README.md +++ b/README.md @@ -45,7 +45,7 @@ What you should know Requirements ------------ -This role works on CentOS 6 and 7. RHEL was not tested but should work without problem. If you need support for other distribution, I can help. Post an issue. +This role works on CentOS 6/7/8. RHEL was not tested but it should also work. The postgresql binaries on your primary server should be installed from the official repository: @@ -79,9 +79,9 @@ Example Playbook The usage is relatively simple - install minimal CentOS-es, set the variables and run the role. -Two settings are required: +Two ansible settings are required: - `gather_facts=True` - we need to know the IP addresses of cluster nodes -- `any_errors_fatal=True` - it ensures that error on any node will result in stopping the whole ansible run. Because it doesn't make sense to continue when you lose some of your cluster nodes during transit. +- `any_errors_fatal=True` - it ensures that error on any node will result in stopping the whole ansible run. Because it doesn't make sense to continue when you lose some of your cluster nodes during the process. ``` - name: install PG HA @@ -89,6 +89,7 @@ Two settings are required: gather_facts: True any_errors_fatal: True vars: + postgres_ha_pg_version: 14 postgres_ha_cluster_master_host: db1 postgres_ha_cluster_vip: 10.10.10.10 postgres_ha_pg_repl_pass: MySuperSecretDBPass @@ -104,6 +105,8 @@ Two settings are required: Cleanup after failure --------------------- +The role can fail. The clustering process is complicated beast and sometimes behaves unexpectedly. Re-running the role often helps. + If the role fails repeatedly and you want to run it fresh as if it was the first time, you need to clean up some things. Please note that default resource names are used here. If you change them using variables, you need to change it also in these commands. @@ -111,32 +114,33 @@ Please note that default resource names are used here. If you change them using ``` pcs resource delete pg-vip pcs resource delete postgres -#pcs resource delete postgres-ha # probably not needed -#pcs resource cleanup postgres # probably not needed +pcs resource cleanup postgres # sometimes needed +#pcs resource delete postgres-ha # probably not needed # Make sure no (related) cluster resources are defined. ``` - RUN ON ALL SLAVE NODES: ``` -systemctl stop postgresql-9.6 +systemctl stop postgresql-14 # Make sure no postgres db is running. -systemctl status postgresql-9.6 +systemctl status postgresql-14 ps aux | grep postgres -rm -rf /var/lib/pgsql/9.6/data -rm -f /var/lib/pgsql/9.6/recovery.conf.pgcluster.pcmk -rm -f /var/lib/pgsql/9.6/.*_constraints_processed # name generated from postgres_ha_cluster_pg_res_name +rm -rf /var/lib/pgsql/14/data +rm -f /var/lib/pgsql/14/.*_constraints_processed # name generated from postgres_ha_cluster_pg_res_name +rm -f /var/lib/pgsql/14/recovery.conf.pgcluster.pcmk # only pg < 12 ``` - RUN ONLY ON MASTER NODE: ``` -systemctl stop postgresql-9.6 -rm -f /var/lib/pgsql/9.6/recovery.conf.pgcluster.pcmk -rm -f /var/lib/pgsql/9.6/.*_constraints_processed -rm -f /var/lib/pgsql/9.6/data/recovery.conf -rm -f /var/lib/pgsql/9.6/data/.synchronized +systemctl stop postgresql-14 +rm -f /var/lib/pgsql/14/.*_constraints_processed +rm -f /var/lib/pgsql/14/data/.synchronized +rm -f /var/lib/pgsql/14/data/standby.signal # only pg >= 12 +rm -f /var/lib/pgsql/14/data/recovery.conf # only pg < 12 +rm -f /var/lib/pgsql/14/recovery.conf.pgcluster.pcmk # only pg < 12 # Make sure no postgres db is running. ps aux | grep postgres -systemctl start postgresql-9.6 -systemctl status postgresql-9.6 +systemctl start postgresql-14 +systemctl status postgresql-14 # Check postgres db functionality. ``` - START AGAIN diff --git a/defaults/main.yml b/defaults/main.yml index ffe1d1d..b4f4e71 100644 --- a/defaults/main.yml +++ b/defaults/main.yml @@ -19,9 +19,9 @@ postgres_ha_cluster_ha_password: 'fropFav7epAbOch2' # password for joinin postgres_ha_cluster_ha_password_hash: '$6$MHAki4YS$Nk7O3FEC2G.INznoSUj4ByFgdwFJ8mcI9.Ks3XAoLLe9f9GB36G8hZe9o8ygDySJwvnLVCn0LGPzcOapK42/A/' # fropFav7epAbOch2 # postgres config -postgres_ha_pg_version: 9.6 +postgres_ha_pg_version: 14 postgres_ha_import_repo: true # Enable download of postgresql repo before install -postgres_ha_repo_url: 'https://download.postgresql.org/pub/repos/yum/{{ postgres_ha_pg_version }}/redhat/rhel-7-x86_64/{{ pg_pkg_name }}' +postgres_ha_repo_url: 'https://download.postgresql.org/pub/repos/yum/reporpms/EL-{{ ansible_distribution_major_version }}-x86_64/pgdg-redhat-repo-latest.noarch.rpm' postgres_ha_pg_systemd_svcname: "postgresql-{{ postgres_ha_pg_version }}" # the name of the original posgres DB resource in systemd postgres_ha_pg_data: "/var/lib/pgsql/{{ postgres_ha_pg_version }}/data" # where can I find PG datadir? postgres_ha_pg_bindir: "/usr/pgsql-{{ postgres_ha_pg_version }}/bin" # where are the PG binaries? @@ -34,10 +34,14 @@ postgres_ha_postgresql_conf_vars: # When altering this hot_standby: "on" wal_log_hints: "on" +postgres_ha_postgresql_conf_vars_12: # Additional conf vars for pg12+ + primary_conninfo: "'port={{ postgres_ha_pg_port }} host={{ postgres_ha_cluster_vip }} user={{ postgres_ha_pg_repl_user }} application_name={{ inventory_hostname }}'" + recovery_target_timeline: "'latest'" + postgres_ha_maint_scripts_path: /var/lib/pgsql/pg-maint # location where to create user scripts for database administration # PAF vars -postgres_ha_paf_version: 2.2.1 +postgres_ha_paf_version: 2.3.0 postgres_ha_paf_geo_patch: False # Apply a patch to PAF to better handle network splits in geographically split clusters. # This patch is from creator of this ansible role and is not official. # It allows having a postgresql master-slave cluster without the need of fencing configured diff --git a/files/resource-agents-paf-2.3.0-1.noarch.rpm b/files/resource-agents-paf-2.3.0-1.noarch.rpm new file mode 100644 index 0000000..1ff366b Binary files /dev/null and b/files/resource-agents-paf-2.3.0-1.noarch.rpm differ diff --git a/library/LICENSE b/library/LICENSE new file mode 100644 index 0000000..50e969b --- /dev/null +++ b/library/LICENSE @@ -0,0 +1,8 @@ +These modules are licensed under the terms of the General Public License (GPL) Version 3, +or alternatively under the terms of the Apache License Version 2.0. + +Feel free to from above licenses the one that suits best your project. + +The terms of each license can be found in the following files: +GPLv3: LICENSE-GPLv3.txt +Apache License 2.0: LICENSE-APACHE2.txt diff --git a/library/LICENSE-APACHE2.txt b/library/LICENSE-APACHE2.txt new file mode 100644 index 0000000..8dada3e --- /dev/null +++ b/library/LICENSE-APACHE2.txt @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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But first, please read +. diff --git a/library/README.TXT b/library/README.TXT new file mode 100644 index 0000000..2948bcc --- /dev/null +++ b/library/README.TXT @@ -0,0 +1 @@ +PCS modules downloaded from https://github.com/OndrejHome/ansible.pcs-modules-2.git diff --git a/library/detect_pacemaker_cluster.py b/library/detect_pacemaker_cluster.py new file mode 100644 index 0000000..c5f0237 --- /dev/null +++ b/library/detect_pacemaker_cluster.py @@ -0,0 +1,74 @@ +#!/usr/bin/python +# Copyright: (c) 2018, Ondrej Famera +# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt) +# Apache License v2.0 (see LICENSE-APACHE2.txt or http://www.apache.org/licenses/LICENSE-2.0) + +from __future__ import absolute_import, division, print_function +__metaclass__ = type + +ANSIBLE_METADATA = { + 'metadata_version': '1.1', + 'status': ['preview'], + 'supported_by': 'community' +} + +DOCUMENTATION = ''' +--- +module: detect_pacemaker_cluster +author: "Ondrej Famera (@ondrejHome)" +short_description: detect facts about installed pacemaker cluster +description: + - Module for collecting various information about pacemaker cluster +version_added: "2.4" +notes: + - Tested on CentOS 7.5 + - works only with pacemaker clusters that uses /etc/corosync/corosync.conf +requirements: [ ] +''' + +EXAMPLES = ''' +- detect_pacemaker_cluster + +''' + +import re +from ansible.module_utils.basic import AnsibleModule + + +def run_module(): + module = AnsibleModule( + argument_spec=dict(), + supports_check_mode=True + ) + + result = {} + + try: + corosync_conf = open('/etc/corosync/corosync.conf', 'r') + nodes = re.compile(r"node\s*\{([^}]+)\}", re.M + re.S) + nodes_list = nodes.findall(corosync_conf.read()) + node_list_set = set() + if len(nodes_list) > 0: + n_name = re.compile(r"ring0_addr\s*:\s*([\w.-]+)\s*", re.M) + for node in nodes_list: + n_name2 = None + n_name2 = n_name.search(node) + if n_name2: + node_name = n_name2.group(1) + node_list_set.add(node_name.rstrip()) + + result['ansible_facts'] = {} + result['ansible_facts']['pacemaker_detected_cluster_nodes'] = node_list_set + result['ansible_facts']['pacemaker_cluster_present'] = True + except IOError as e: + result['ansible_facts'] = {} + result['ansible_facts']['pacemaker_cluster_present'] = False + module.exit_json(**result) + + +def main(): + run_module() + + +if __name__ == '__main__': + main() diff --git a/library/pcs_auth.py b/library/pcs_auth.py new file mode 100644 index 0000000..d1dfc42 --- /dev/null +++ b/library/pcs_auth.py @@ -0,0 +1,178 @@ +#!/usr/bin/python +# Copyright: (c) 2018, Ondrej Famera +# GNU General Public License v3.0+ (see LICENSE-GPLv3.txt or https://www.gnu.org/licenses/gpl-3.0.txt) +# Apache License v2.0 (see LICENSE-APACHE2.txt or http://www.apache.org/licenses/LICENSE-2.0) + +from __future__ import absolute_import, division, print_function +__metaclass__ = type + +ANSIBLE_METADATA = { + 'metadata_version': '1.1', + 'status': ['preview'], + 'supported_by': 'community' +} + +DOCUMENTATION = ''' +--- +author: "Ondrej Famera (@OndrejHome)" +module: pcs_auth +short_description: Module for interacting with 'pcs auth' +description: + - module for authenticating nodes in pacemaker cluster using 'pcs auth' for RHEL/CentOS. +version_added: "2.4" +options: + state: + description: + - "'present' authenticates the node while 'absent' will remove the node authentification" + - "node from which this is run is (de)authenticated agains the node specified in 'node_name'" + required: false + default: present + choices: [ 'present', 'absent' ] + type: str + node_name: + description: + - hostname of node for authentication + required: true + type: str + username: + description: + - "username of 'cluster user' for cluster authentication" + required: false + default: 'hacluster' + type: str + password: + description: + - "password of 'cluster user' for cluster authentication" + required: false + type: str +notes: + - This module is (de)authenticating nodes only 1-way == authenticating node 1 agains + node 2 doesn't mean that node 2 is authenticated agains node 1! + - Tested on CentOS 6.8, 7.3 + - Tested on Red Hat Enterprise Linux 7.3, 7.4, 7.6 + - Experimental support for Red Hat Enterprise Linux 8.0 Beta and pcs 0.10 +''' + +EXAMPLES = ''' +- name: Authorize node 'n1' with default user 'hacluster' and password 'testtest' + pcs_auth: + node_name: 'n1' + password: 'testtest' + +- name: authorize all nodes in ansible play to each other + pcs_auth: + node_name: "{{ hostvars[item]['ansible_hostname'] }}" + password: 'testtest' + with_items: "{{ play_hosts }}" + +- name: de-authorize all nodes from each other in ansible play + pcs_auth: + node_name: "{{ hostvars[item]['ansible_hostname'] }}" + state: 'absent' + with_items: "{{ play_hosts }}" + +''' + +import os.path +import json +from distutils.spawn import find_executable + +from ansible.module_utils.basic import AnsibleModule + + +def run_module(): + module = AnsibleModule( + argument_spec=dict( + state=dict(default="present", choices=['present', 'absent']), + node_name=dict(required=True), + username=dict(required=False, default="hacluster"), + password=dict(required=False, no_log=True) + ), + supports_check_mode=True + ) + + state = module.params['state'] + node_name = module.params['node_name'] + + if state == 'present' and not module.params['password']: + module.fail_json(msg="Missing password parameter needed for authorizing the node") + + result = {} + + if find_executable('pcs') is None: + module.fail_json(msg="'pcs' executable not found. Install 'pcs'.") + + # get the pcs major.minor version + rc, out, err = module.run_command('pcs --version') + if rc == 0: + pcs_version = out.split('.')[0] + '.' + out.split('.')[1] + else: + module.fail_json(msg="pcs --version exited with non-zero exit code (" + rc + "): " + out + err) + + if os.path.isfile('/var/lib/pcsd/tokens') and pcs_version == '0.9': + tokens_file = open('/var/lib/pcsd/tokens', 'r+') + # load JSON tokens + tokens_data = json.load(tokens_file) + result['tokens_data'] = tokens_data['tokens'] + if os.path.isfile('/var/lib/pcsd/known-hosts') and pcs_version == '0.10': + tokens_file = open('/var/lib/pcsd/known-hosts', 'r+') + # load JSON tokens + tokens_data = json.load(tokens_file) + result['tokens_data'] = tokens_data['known_hosts'] + + rc, out, err = module.run_command('pcs cluster pcsd-status %(node_name)s' % module.params) + + if state == 'present' and rc != 0: + # WARNING: this will also consider nodes to which we cannot connect as unauthorized + result['changed'] = True + if not module.check_mode: + if pcs_version == '0.9': + cmd_auth = 'pcs cluster auth %(node_name)s -u %(username)s -p %(password)s --local' % module.params + elif pcs_version == '0.10': + cmd_auth = 'pcs host auth %(node_name)s -u %(username)s -p %(password)s' % module.params + else: + module.fail_json(msg="unsupported version of pcs (" + pcs_version + "). Only versions 0.9 and 0.10 are supported.") + rc, out, err = module.run_command(cmd_auth) + if rc == 0: + module.exit_json(**result) + else: + module.fail_json(msg="Failed to authenticate node using command '" + cmd_auth + "'", output=out, error=err) + + elif (state == 'absent' and tokens_data and ( + (pcs_version == '0.9' and node_name in tokens_data['tokens']) or + (pcs_version == '0.10' and node_name in tokens_data['known_hosts']) + )): + result['changed'] = True + if not module.check_mode: + if pcs_version == '0.9': + del tokens_data['tokens'][node_name] + del tokens_data['ports'][node_name] + tokens_data['data_version'] += 1 + # write the change into token file + tokens_file.seek(0) + json.dump(tokens_data, tokens_file, indent=4) + tokens_file.truncate() + elif pcs_version == '0.10': + cmd_deauth = 'pcs host deauth %(node_name)s' % module.params + rc, out, err = module.run_command(cmd_deauth) + if rc == 0: + module.exit_json(**result) + else: + module.fail_json(msg="Failed to de-authenticate node using command '" + cmd_deauth + "'", output=out, error=err) + else: + module.fail_json(msg="unsupported version of pcs (" + pcs_version + "). Only versions 0.9 and 0.10 are supported.") + + else: + result['changed'] = False + module.exit_json(**result) + + # END of module + module.exit_json(**result) + + +def main(): + run_module() + + +if __name__ == '__main__': + main() diff --git a/library/pcs_cluster.py b/library/pcs_cluster.py new file mode 100644 index 0000000..65037f5 --- /dev/null +++ b/library/pcs_cluster.py @@ -0,0 +1,325 @@ +#!/usr/bin/python +# Copyright: (c) 2018, Ondrej Famera +# GNU General Public License v3.0+ (see LICENSE-GPLv3.txt or https://www.gnu.org/licenses/gpl-3.0.txt) +# Apache License v2.0 (see LICENSE-APACHE2.txt or http://www.apache.org/licenses/LICENSE-2.0) + +from __future__ import absolute_import, division, print_function +__metaclass__ = type + +ANSIBLE_METADATA = { + 'metadata_version': '1.1', + 'status': ['preview'], + 'supported_by': 'community' +} + +DOCUMENTATION = ''' +--- +author: "Ondrej Famera (@OndrejHome)" +module: pcs_cluster +short_description: "wrapper module for 'pcs cluster setup/destroy/node add/node remove'" +description: + - "module for creating/destroying/extending/shrinking clusters using 'pcs' utility" +version_added: "2.4" +options: + state: + description: + - "'present' - ensure that cluster exists" + - "'absent' - ensure cluster doesn't exist" + required: false + default: present + choices: ['present', 'absent'] + type: str + node_list: + description: + - space separated list of nodes in cluster + required: false + type: str + cluster_name: + description: + - pacemaker cluster name + required: false + type: str + token: + description: + - sets time in milliseconds until a token loss is declared after not receiving a token + required: false + type: int + transport: + description: + - "'default' - use default transport protocol ('udp' in CentOS/RHEL 6, 'udpu' in CentOS/RHEL 7), 'knet' in Fedora 29" + - "'udp' - use UDP multicast protocol" + - "'udpu' - use UDP unicast protocol" + - "'knet' - use KNET protocol" + required: false + default: default + choices: ['default', 'udp', 'udpu', 'knet'] + type: str + transport_options: + description: + - "additional options for transports (available only with pcs-0.10), this option can be used only when `transport` option is specified (non-default)" + required: false + type: str + allowed_node_changes: + description: + - "'none' - node list must match existing cluster if cluster should be present" + - "'add' - allow adding new nodes to cluster" + - "'remove' - allow removing nodes from cluster" + default: none + required: false + choices: ['none', 'add', 'remove'] + type: str +notes: + - Tested on CentOS 6.8, 6.9, 7.3, 7.4, 7.5 + - Tested on Red Hat Enterprise Linux 7.3, 7.4, 7.6 + - "When adding/removing nodes, make sure to use 'run_once=True' and 'delegate_to' that points to + node that will stay in cluster, nodes cannot add themselves to cluster and node that removes + themselves may not remove all needed cluster information + - https://bugzilla.redhat.com/show_bug.cgi?id=1360882" + - redundant link support tested on CentOS 7.8 with 2 links and on CentOS 8.2 with 3 links and knet +''' + +EXAMPLES = ''' +- name: Setup cluster + pcs_cluster: + node_list: "{% for item in play_hosts %}{{ hostvars[item]['ansible_hostname'] }} {% endfor %}" + cluster_name: 'test-cluster' + run_once: True + +- name: Create cluster with totem token timeout of 5000 ms and UDP unicast transport protocol + pcs_cluster: + node_list: "{% for item in play_hosts %}{{ hostvars[item]['ansible_hostname'] }} {% endfor %}" + cluster_name: 'test-cluster' + token: 5000 + transport: 'udpu' + run_once: True + +- name: Create cluster with redundant corosync links + pcs_cluster: + cluster_name: 'test-cluster' + node_list: > + node1.example.com,192.168.1.11 + node2.example.com,192.168.1.12 + state: 'present' + run_once: True + +- name: Create cluster with two redundant corosync links and transport and link options + pcs_cluster: + cluster_name: 'test-cluster' + node_list: > + node1.example.com,192.168.1.11,192.168.2.11 + node2.example.com,192.168.1.12,192.168.2.12 + transport: 'knet' + transport_options: link_mode=passive link linknumber=0 transport=udp link_priority=1 link linknumber=1 transport=udp link_priority=2' + run_once: True + +- name: Add new nodes to existing cluster + pcs_cluster: + node_list: 'existing-node-1 existing-node-2 new-node-3 new-node-4' + cluster_name: 'test-cluster' + allowed_node_changes: 'add' + run_once: True + delegate_to: existing-node-1 + +- name: Remove nodes from existing cluster cluster (test-cluster= exiting-node-1, exiting-node-2, exiting-node-3, exiting-node-4) + pcs_cluster: + node_list: 'existing-node-1 existing-node-2' + cluster_name: 'test-cluster' + allowed_node_changes: 'remove' + run_once: True + delegate_to: existing-node-1 + +- name: Destroy cluster on each node + pcs_cluster: + state: 'absent' +''' + +import os.path +import re +from distutils.spawn import find_executable + +from ansible.module_utils.basic import AnsibleModule + + +def run_module(): + module = AnsibleModule( + argument_spec=dict( + state=dict(default="present", choices=['present', 'absent']), + node_list=dict(required=False), + cluster_name=dict(required=False), + token=dict(required=False, type='int'), + transport=dict(required=False, default="default", choices=['default', 'udp', 'udpu', 'knet']), + transport_options=dict(required=False, default="", type='str'), + allowed_node_changes=dict(required=False, default="none", choices=['none', 'add', 'remove']), + ), + supports_check_mode=True + ) + + state = module.params['state'] + allowed_node_changes = module.params['allowed_node_changes'] + node_list = module.params['node_list'] + if state == 'present' and (not module.params['node_list'] or not module.params['cluster_name']): + module.fail_json(msg='When creating/expanding/shrinking cluster you must specify both node_list and cluster_name') + result = {} + + if find_executable('pcs') is None: + module.fail_json(msg="'pcs' executable not found. Install 'pcs'.") + + # get the pcs major.minor version + rc, out, err = module.run_command('pcs --version') + if rc == 0: + pcs_version = out.split('.')[0] + '.' + out.split('.')[1] + else: + module.fail_json(msg="pcs --version exited with non-zero exit code (" + rc + "): " + out + err) + + # /var/lib/pacemaker/cib/cib.xml exists on cluster that were at least once started + cib_xml_exists = os.path.isfile('/var/lib/pacemaker/cib/cib.xml') + # EL 6 configuration file + cluster_conf_exists = os.path.isfile('/etc/cluster/cluster.conf') + # EL 7 configuration file + corosync_conf_exists = os.path.isfile('/etc/corosync/corosync.conf') + + node_list_set = set() + node_list_set_detailed = {} + if node_list is not None: + # process node list (use only first node name (ring0) + for item in node_list.split(): + node_list_set.add(item.split(',')[0]) + node_list_set_detailed[item.split(',')[0]] = {'ring0': item.split(',')[0]} + if len(item.split(',')) > 1: + for ring_num in range(len(item.split(',')) - 1): + node_list_set_detailed[item.split(',')[0]]['ring' + str(ring_num + 1)] = item.split(',')[ring_num + 1] + + detected_node_list_set = set() + if corosync_conf_exists: + try: + corosync_conf = open('/etc/corosync/corosync.conf', 'r') + nodes = re.compile(r"node\s*\{([^}]+)\}", re.M + re.S) + # parse list of nodes with their parameters from corosync.conf + re_nodes_list = nodes.findall(corosync_conf.read()) + except IOError as e: + detected_node_list_set = set() + + re_node_list_set = {} + if len(re_nodes_list) == 0: + detected_node_list_set = set() + exit + + # detect ring_0 address that will become node_name + node_name = re.compile(r"ring0_addr\s*:\s*([\w.-]+)\s*", re.M) + for node in re_nodes_list: + n_name = node_name.search(node) + if n_name is None: + # skip node if we cannot determine it's ring0 address + continue + re_node_list_set[n_name.group(1)] = {'ring0': n_name.group(1)} + detected_node_list_set.add(n_name.group(1)) + # detect additional ring addresses + for ring_num in range(7): + node_rings = re.compile(r"ring" + str(ring_num + 1) + r"_addr\s*:\s*([\w.-]+)\s*", re.M) + n_rings = node_rings.search(node) + if n_rings: + re_node_list_set[n_name.group(1)]["ring" + str(ring_num + 1)] = n_rings.group(1) + + # if there is no cluster configuration and cluster should be created do 'pcs cluster setup' + if state == 'present' and not (cluster_conf_exists or corosync_conf_exists or cib_xml_exists): + result['changed'] = True + # create cluster from node list that was provided to module + if pcs_version == '0.9': + # if no transport_options are specified used empty string + if (module.params['transport_options']): + module.fail_json(msg="using transport_options is not supported with pcs 0.9") + module.params['token_param'] = '' if (not module.params['token']) else '--token %(token)s' % module.params + module.params['transport_param'] = '' if (module.params['transport'] == 'default') else '--transport %(transport)s' % module.params + cmd = 'pcs cluster setup --name %(cluster_name)s %(node_list)s %(token_param)s %(transport_param)s' % module.params + elif pcs_version == '0.10': + if ((module.params['transport_options'] != '') and (module.params['transport'] == 'default')): + module.fail_json(msg="using option transport_option must not be used without option transport") + module.params['token_param'] = '' if (not module.params['token']) else 'token %(token)s' % module.params + module.params['transport_param'] = '' if (module.params['transport'] == 'default') else 'transport %(transport)s' % module.params + if ',' in module.params['node_list']: + # rewrite node_list to conform to pcs-0.10 format with multiple links + module.params['node_list'] = '' + for node in node_list_set: + module.params['node_list'] += node + ' ' + for link_number in range(len(node_list_set_detailed[node])): + module.params['node_list'] += 'addr=' + node_list_set_detailed[node]['ring' + str(link_number)] + ' ' + cmd = 'pcs cluster setup %(cluster_name)s %(node_list)s %(token_param)s %(transport_param)s %(transport_options)s' % module.params + else: + module.fail_json(msg="unsupported version of pcs (" + pcs_version + "). Only versions 0.9 and 0.10 are supported.") + if not module.check_mode: + rc, out, err = module.run_command(cmd) + if rc == 0: + module.exit_json(changed=True) + else: + module.fail_json(msg="Failed to create cluster using command '" + cmd + "'", output=out, error=err) + # if cluster exists and we are allowed to add/remove nodes do 'pcs cluster node add/remove' + elif state == 'present' and corosync_conf_exists and allowed_node_changes != 'none' and node_list_set != detected_node_list_set: + result['changed'] = True + result['detected_nodes'] = detected_node_list_set + # adding new nodes to cluster + if allowed_node_changes == 'add': + result['nodes_to_add'] = node_list_set - detected_node_list_set + for node in (node_list_set - detected_node_list_set): + if 'ring1' in node_list_set_detailed[node] and pcs_version == '0.9': + cmd = 'pcs cluster node add ' + node + ',' + node_list_set_detailed[node]['ring1'] + elif len(node_list_set_detailed[node]) > 1 and pcs_version == '0.10': + cmd = 'pcs cluster node add ' + node + ' ' + for link_number in range(len(node_list_set_detailed[node])): + cmd += 'addr=' + node_list_set_detailed[node]['ring' + str(link_number)] + ' ' + else: + cmd = 'pcs cluster node add ' + node + if not module.check_mode: + rc, out, err = module.run_command(cmd) + if rc == 0: + module.exit_json(changed=True) + else: + module.fail_json(msg="Failed to add node '" + node + "' to cluster using command '" + cmd + "'", output=out, error=err) + # removing nodes from cluster + if allowed_node_changes == 'remove': + result['nodes_to_remove'] = detected_node_list_set - node_list_set + for node in (detected_node_list_set - node_list_set): + cmd = 'pcs cluster node remove ' + node + if not module.check_mode: + rc, out, err = module.run_command(cmd) + if rc == 0: + module.exit_json(changed=True) + else: + module.fail_json(msg="Failed to remove node '" + node + "' from cluster using command '" + cmd + "'", output=out, error=err) + # if cluster should be removed and cluster configuration exists + elif state == 'absent' and (cluster_conf_exists or corosync_conf_exists or cib_xml_exists): + result['changed'] = True + # destroy cluster on node where this module is executed + cmd = 'pcs cluster destroy' + if not module.check_mode: + rc, out, err = module.run_command(cmd) + if rc == 0: + module.exit_json(changed=True) + else: + module.fail_json(msg="Failed to delete cluster using command '" + cmd + "'", output=out, error=err) + # if cluster doesn't exists and should be removed, just acknowledge that no chage is needed + elif state == 'absent' and (not cluster_conf_exists and not corosync_conf_exists and not cib_xml_exists): + module.exit_json(changed=False, msg="No change needed, cluster is not present.") + # if the cluster looks as it should + elif state == 'present' and corosync_conf_exists and node_list_set == detected_node_list_set: + module.exit_json(changed=False, msg="No change needed, cluster is present.") + # if requested node list and detected node list are different but we are not allowed to change, fail + elif state == 'present' and corosync_conf_exists and allowed_node_changes == 'none' and node_list_set != detected_node_list_set: + module.fail_json( + msg="'Detected node list' and 'Requested node list' are different, but changes are not allowed.", + node_list_set=node_list_set, + detected_node_list_set=detected_node_list_set + ) + else: + # all other cases, possibly also unhadled ones + module.exit_json(changed=False) + + # END of module + module.exit_json(**result) + + +def main(): + run_module() + + +if __name__ == '__main__': + main() diff --git a/library/pcs_constraint_colocation.py b/library/pcs_constraint_colocation.py new file mode 100644 index 0000000..195a64c --- /dev/null +++ b/library/pcs_constraint_colocation.py @@ -0,0 +1,248 @@ +#!/usr/bin/python +# Copyright: (c) 2018, Ondrej Famera +# GNU General Public License v3.0+ (see LICENSE-GPLv3.txt or https://www.gnu.org/licenses/gpl-3.0.txt) +# Apache License v2.0 (see LICENSE-APACHE2.txt or http://www.apache.org/licenses/LICENSE-2.0) + +from __future__ import absolute_import, division, print_function +__metaclass__ = type + +ANSIBLE_METADATA = { + 'metadata_version': '1.1', + 'status': ['preview'], + 'supported_by': 'community' +} + +DOCUMENTATION = ''' +--- +author: "Ondrej Famera (@OndrejHome)" +module: pcs_constraint_colocation +short_description: "wrapper module for 'pcs constraint colocation'" +description: + - "module for creating and deleting clusters colocation constraints using 'pcs' utility" +version_added: "2.4" +options: + state: + description: + - "'present' - ensure that cluster constraint exists" + - "'absent' - ensure cluster constraints doesn't exist" + required: false + default: present + choices: ['present', 'absent'] + type: str + resource1: + description: + - first resource for constraint + required: true + type: str + resource2: + description: + - second resource for constraint + required: true + type: str + resource1_role: + description: + - Role of resource1 + required: false + choices: ['Master', 'Slave', 'Started'] + default: 'Started' + type: str + resource2_role: + description: + - Role of resource2 + required: false + choices: ['Master', 'Slave', 'Started'] + default: 'Started' + type: str + score: + description: + - constraint score in range -INFINITY..0..INFINITY + required: false + default: 'INFINITY' + type: str + cib_file: + description: + - "Apply changes to specified file containing cluster CIB instead of running cluster." + - "This module requires the file to already contain cluster configuration." + required: false + type: str +notes: + - tested on CentOS 7.6, Fedora 29 + - no extra options allowed for constraints + - "TODO: validation of resource names, score values" +''' + +EXAMPLES = ''' +- name: prefer resA and resB to run on same node + pcs_constraint_colocation: + resource1: 'resA' + resource2: 'resB' + +- name: prefer resA to run on same node as Master resource of resB-master resource + pcs_constraint_colocation: + resource1: 'resA' + resource2: 'resB-master' + resource2_role: 'Master' + +- name: remove colocation constraint that prefer resA to run on same node as Master resource of resB-master resource + pcs_constraint_colocation: + resource1: 'resA' + resource2: 'resB-master' + resource2_role: 'Master' + state: 'absent' +''' + +import os.path +import xml.etree.ElementTree as ET +from distutils.spawn import find_executable + +from ansible.module_utils.basic import AnsibleModule + + +def run_module(): + module = AnsibleModule( + argument_spec=dict( + state=dict(default="present", choices=['present', 'absent']), + resource1=dict(required=True), + resource2=dict(required=True), + resource1_role=dict(required=False, choices=['Master', 'Slave', 'Started'], default='Started'), + resource2_role=dict(required=False, choices=['Master', 'Slave', 'Started'], default='Started'), + score=dict(required=False, default="INFINITY"), + cib_file=dict(required=False), + ), + supports_check_mode=True + ) + + state = module.params['state'] + resource1 = module.params['resource1'] + resource2 = module.params['resource2'] + resource1_role = module.params['resource1_role'] + resource2_role = module.params['resource2_role'] + score = module.params['score'] + cib_file = module.params['cib_file'] + + result = {} + + if find_executable('pcs') is None: + module.fail_json(msg="'pcs' executable not found. Install 'pcs'.") + + module.params['cib_file_param'] = '' + if cib_file is not None: + # use cib_file if specified + if os.path.isfile(cib_file): + try: + current_cib = ET.parse(cib_file) + except Exception as e: + module.fail_json(msg="Error encountered parsing the cib_file - %s" % (e)) + current_cib_root = current_cib.getroot() + module.params['cib_file_param'] = '-f ' + cib_file + else: + module.fail_json(msg="%(cib_file)s is not a file or doesn't exists" % module.params) + else: + # get running cluster configuration + rc, out, err = module.run_command('pcs cluster cib') + if rc == 0: + current_cib_root = ET.fromstring(out) + else: + module.fail_json(msg='Failed to load cluster configuration', out=out, error=err) + + # try to find the constraint we have defined + constraint = None + with_roles = False + detected_role1, detected_role2 = None, None + # check if we have requested a non-default roles + if resource1_role != 'Started' or resource2_role != 'Started': + with_roles = True + constraints = current_cib_root.findall("./configuration/constraints/rsc_colocation") + for constr in constraints: + # constraint is matched using following criteria: + # - resource order (resource1 with resource2) + # - resource roles (resource1_role with resource2_role) + if (constr.attrib.get('rsc') == resource1 + and constr.attrib.get('with-rsc') == resource2 + and constr.attrib.get('rsc-role', 'Started') == resource1_role + and constr.attrib.get('with-rsc-role', 'Started') == resource2_role): + constraint = constr + break + + # additional variables for verbose output + if constraint is not None: + result.update({ + 'constraint_was_matched': True, + 'score': constraint.attrib.get('score'), + 'resource1_role': constr.attrib.get('rsc-role'), + 'resource2_role': constr.attrib.get('with-rsc-role'), + }) + else: + result.update({'constraint_was_matched': False}) + + # colocation constraint creation command + # TODO: check which old versions requires this, the 0.9.162 seems to handle 'Started' role correctly + if with_roles is True: + if resource1_role != 'Started' and resource2_role != 'Started': + cmd_create = """ pcs %(cib_file_param)s constraint colocation + add %(resource1_role)s %(resource1)s + with %(resource2_role)s %(resource2)s %(score)s """ % module.params + elif resource1_role != 'Started' and resource2_role == 'Started': + cmd_create = """ pcs %(cib_file_param)s constraint colocation + add %(resource1_role)s %(resource1)s + with %(resource2)s %(score)s """ % module.params + elif resource1_role == 'Started' and resource2_role != 'Started': + cmd_create = """ pcs %(cib_file_param)s constraint colocation + add %(resource1)s + with %(resource2_role)s %(resource2)s %(score)s """ % module.params + else: + cmd_create = """ pcs %(cib_file_param)s constraint colocation + add %(resource1)s with %(resource2)s %(score)s """ % module.params + + # colocation constraint deletion command + if constraint is not None: + cmd_delete = 'pcs %(cib_file_param)s constraint delete ' % module.params + constraint.attrib.get('id') + + if state == 'present' and constraint is None: + # constraint should be present, but we don't see it in configuration - lets create it + result['changed'] = True + if not module.check_mode: + rc, out, err = module.run_command(cmd_create) + if rc == 0: + module.exit_json(**result) + else: + module.fail_json(msg="Failed to create constraint with cmd: '" + cmd_create + "'", output=out, error=err) + + elif state == 'present' and constraint is not None: + # constraint should be present, lets see if it has different score from requested, if yes, then we do update + if constraint.attrib.get('score', 'INFINITY') != score: + result['changed'] = True + if not module.check_mode: + rc, out, err = module.run_command(cmd_delete) + if rc != 0: + module.fail_json(msg="Failed to delete constraint for replacement with cmd: '" + cmd_delete + "'", output=out, error=err) + else: + rc, out, err = module.run_command(cmd_create) + if rc == 0: + module.exit_json(**result) + else: + module.fail_json(msg="Failed to create constraint replacement with cmd: '" + cmd_create + "'", output=out, error=err) + + elif state == 'absent' and constraint is not None: + # constraint should not be present but we have found something - lets remove that + result['changed'] = True + if not module.check_mode: + rc, out, err = module.run_command(cmd_delete) + if rc == 0: + module.exit_json(**result) + else: + module.fail_json(msg="Failed to delete constraint with cmd: '" + cmd_delete + "'", output=out, error=err) + else: + # constraint should not be present and is not there, nothing to do + result['changed'] = False + + # END of module + module.exit_json(**result) + + +def main(): + run_module() + + +if __name__ == '__main__': + main() diff --git a/library/pcs_constraint_location.py b/library/pcs_constraint_location.py new file mode 100644 index 0000000..2f30661 --- /dev/null +++ b/library/pcs_constraint_location.py @@ -0,0 +1,199 @@ +#!/usr/bin/python +# Copyright: (c) 2018, Ondrej Famera +# GNU General Public License v3.0+ (see LICENSE-GPLv3.txt or https://www.gnu.org/licenses/gpl-3.0.txt) +# Apache License v2.0 (see LICENSE-APACHE2.txt or http://www.apache.org/licenses/LICENSE-2.0) + +from __future__ import absolute_import, division, print_function +__metaclass__ = type + + +ANSIBLE_METADATA = { + 'metadata_version': '1.1', + 'status': ['preview'], + 'supported_by': 'community' +} + +DOCUMENTATION = ''' +--- +author: "Ondrej Famera (@OndrejHome)" +module: pcs_constraint_location +short_description: "wrapper module for 'pcs constraint location'" +description: + - "module for creating and deleting clusters location constraints using 'pcs' utility" +version_added: "2.4" +options: + state: + description: + - "'present' - ensure that cluster constraint exists" + - "'absent' - ensure cluster constraints doesn't exist" + required: false + default: present + choices: ['present', 'absent'] + type: str + resource: + description: + - resource for constraint + required: true + type: str + node_name: + description: + - node name for constraints + required: true + type: str + score: + description: + - constraint score in range -INFINITY..0..INFINITY + required: false + default: 'INFINITY' + type: str + cib_file: + description: + - "Apply changes to specified file containing cluster CIB instead of running cluster." + - "This module requires the file to already contain cluster configuration." + required: false + type: str +notes: + - tested on CentOS 7.6, Fedora 29 + - specifying non-existing node_name for Fedora 29 produces error. Use only existing node names. +''' + +EXAMPLES = ''' +- name: resource resA prefers to run on node1 + pcs_constraint_location: + resource: 'resA' + node_name: 'node1' + +- name: remove constraint where resource resA prefers to run on node1 + pcs_constraint_location: + resource: 'resA' + node_name: 'node1' + state: 'absent' + +- name: resource resB avoids running on node2 + pcs_constraint_location: + resource: 'resB' + node_name: 'node2' + score: '-INFINITY' + +- name: remove constraint where resource resB avoids running on node2 + pcs_constraint_location: + resource: 'resB' + node_name: 'node2' + score: '-INFINITY' + state: 'absent' +''' + +import os.path +import xml.etree.ElementTree as ET +from distutils.spawn import find_executable + +from ansible.module_utils.basic import AnsibleModule + + +def run_module(): + module = AnsibleModule( + argument_spec=dict( + state=dict(default="present", choices=['present', 'absent']), + resource=dict(required=True), + node_name=dict(required=True), + score=dict(required=False, default="INFINITY"), + cib_file=dict(required=False), + ), + supports_check_mode=True + ) + + state = module.params['state'] + resource = module.params['resource'] + node_name = module.params['node_name'] + score = module.params['score'] + cib_file = module.params['cib_file'] + + result = {} + + if find_executable('pcs') is None: + module.fail_json(msg="'pcs' executable not found. Install 'pcs'.") + + module.params['cib_file_param'] = '' + if cib_file is not None: + # use cib_file if specified + if os.path.isfile(cib_file): + try: + current_cib = ET.parse(cib_file) + except Exception as e: + module.fail_json(msg="Error encountered parsing the cib_file - %s" % (e)) + current_cib_root = current_cib.getroot() + module.params['cib_file_param'] = '-f ' + cib_file + else: + module.fail_json(msg="%(cib_file)s is not a file or doesn't exists" % module.params) + else: + # get running cluster configuration + rc, out, err = module.run_command('pcs cluster cib') + if rc == 0: + current_cib_root = ET.fromstring(out) + else: + module.fail_json(msg='Failed to load cluster configuration', out=out, error=err) + + # try to find the constraint we have defined + constraint = None + constraints = current_cib_root.findall("./configuration/constraints/rsc_location") + for constr in constraints: + # constraint is considered found if we see resource and node as got through attributes + if constr.attrib.get('rsc') == resource and constr.attrib.get('node') == node_name: + constraint = constr + break + + # location constraint creation command + cmd_create = 'pcs %(cib_file_param)s constraint location %(resource)s prefers %(node_name)s=%(score)s' % module.params + + # location constriaint deleter command + if constraint is not None: + cmd_delete = 'pcs %(cib_file_param)s constraint delete ' % module.params + constraint.attrib.get('id') + + if state == 'present' and constraint is None: + # constraint should be present, but we don't see it in configuration - lets create it + result['changed'] = True + if not module.check_mode: + rc, out, err = module.run_command(cmd_create) + if rc == 0: + module.exit_json(**result) + else: + module.fail_json(msg="Failed to create constraint with cmd: '" + cmd_create + "'", output=out, error=err) + + elif state == 'present' and constraint is not None: + # constraint should be present and we see similar constraint so lets check if it is same + if score != constraint.attrib.get('score'): + result['changed'] = True + if not module.check_mode: + rc, out, err = module.run_command(cmd_delete) + if rc != 0: + module.fail_json(msg="Failed to delete constraint for replacement with cmd: '" + cmd_delete + "'", output=out, error=err) + else: + rc, out, err = module.run_command(cmd_create) + if rc == 0: + module.exit_json(**result) + else: + module.fail_json(msg="Failed to create constraint replacement with cmd: '" + cmd_create + "'", output=out, error=err) + + elif state == 'absent' and constraint is not None: + # constraint should not be present but we have found something - lets remove that + result['changed'] = True + if not module.check_mode: + rc, out, err = module.run_command(cmd_delete) + if rc == 0: + module.exit_json(**result) + else: + module.fail_json(msg="Failed to delete constraint with cmd: '" + cmd_delete + "'", output=out, error=err) + else: + # constraint should not be present and is not there, nothing to do + result['changed'] = False + + # END of module + module.exit_json(**result) + + +def main(): + run_module() + + +if __name__ == '__main__': + main() diff --git a/library/pcs_constraint_order.py b/library/pcs_constraint_order.py new file mode 100644 index 0000000..41b9f26 --- /dev/null +++ b/library/pcs_constraint_order.py @@ -0,0 +1,256 @@ +#!/usr/bin/python +# Copyright: (c) 2018, Ondrej Famera +# GNU General Public License v3.0+ (see LICENSE-GPLv3.txt or https://www.gnu.org/licenses/gpl-3.0.txt) +# Apache License v2.0 (see LICENSE-APACHE2.txt or http://www.apache.org/licenses/LICENSE-2.0) + +from __future__ import absolute_import, division, print_function +__metaclass__ = type + +ANSIBLE_METADATA = { + 'metadata_version': '1.1', + 'status': ['preview'], + 'supported_by': 'community' +} + +DOCUMENTATION = ''' +--- +author: "Ondrej Famera (@OndrejHome)" +module: pcs_constraint_order +short_description: "wrapper module for 'pcs constraint order'" +description: + - "module for creating and deleting clusters order constraints using 'pcs' utility" +version_added: "2.4" +options: + state: + description: + - "'present' - ensure that cluster constraint exists" + - "'absent' - ensure cluster constraints doesn't exist" + required: false + default: present + choices: ['present', 'absent'] + type: str + resource1: + description: + - first resource for constraint + required: true + type: str + resource2: + description: + - second resource for constraint + required: true + type: str + resource1_action: + description: + - action to which constraint applies for resource1 + required: false + choices: ['start','promote','demote','stop'] + default: 'start' + type: str + resource2_action: + description: + - action to which constraint applies for resource2 + required: false + choices: ['start','promote','demote','stop'] + default: 'start' + type: str + kind: + description: + - Kind of the order constraint + required: false + choices: ['Optional','Mandatory','Serialize'] + default: 'Mandatory' + type: str + symmetrical: + description: + - Is the constraint symmetrical? + required: false + choices: ['true','false'] + default: 'true' + type: str + cib_file: + description: + - "Apply changes to specified file containing cluster CIB instead of running cluster." + - "This module requires the file to already contain cluster configuration." + required: false + type: str +notes: + - tested on CentOS 7.6, Fedora 29 +''' + +EXAMPLES = ''' +- name: start resA before starting resB + pcs_constraint_order: + resource1: 'resA' + resource2: 'resB' + +- name: make Optional order constraint where resA should start before resB + pcs_constraint_order: + resource1: 'resA' + resource2: 'resB' + kind: 'Optional' + +- name: start resB after resA was promoted + pcs_constraint_order: + resource1: 'resA' + resource1_action: 'promote' + resource2: 'resB' + +- name: start resA before starting resB but don't require that resB stope before resA + pcs_constraint_order: + resource1: 'resA' + resource2: 'resB' + symmetrical: 'false' + +- name: remove order constraint between resA and resB + pcs_constraint_order: + resource1: 'resA' + resource2: 'resB' + state: 'absent' +''' + +import os.path +import xml.etree.ElementTree as ET +from distutils.spawn import find_executable + +from ansible.module_utils.basic import AnsibleModule + + +def run_module(): + module = AnsibleModule( + argument_spec=dict( + state=dict(default="present", choices=['present', 'absent']), + resource1=dict(required=True), + resource2=dict(required=True), + resource1_action=dict(required=False, choices=['start', 'promote', 'demote', 'stop'], default='start'), + resource2_action=dict(required=False, choices=['start', 'promote', 'demote', 'stop'], default='start'), + kind=dict(required=False, choices=['Optional', 'Mandatory', 'Serialize'], default='Mandatory'), + symmetrical=dict(required=False, choices=['true', 'false'], default='true'), + cib_file=dict(required=False), + ), + supports_check_mode=True + ) + + state = module.params['state'] + resource1 = module.params['resource1'] + resource2 = module.params['resource2'] + resource1_action = module.params['resource1_action'] + resource2_action = module.params['resource2_action'] + kind = module.params['kind'] + symmetrical = module.params['symmetrical'] + cib_file = module.params['cib_file'] + + result = {} + + if find_executable('pcs') is None: + module.fail_json(msg="'pcs' executable not found. Install 'pcs'.") + + module.params['cib_file_param'] = '' + if cib_file is not None: + # use cib_file if specified + if os.path.isfile(cib_file): + try: + current_cib = ET.parse(cib_file) + except Exception as e: + module.fail_json(msg="Error encountered parsing the cib_file - %s" % (e)) + current_cib_root = current_cib.getroot() + module.params['cib_file_param'] = '-f ' + cib_file + else: + module.fail_json(msg="%(cib_file)s is not a file or doesn't exists" % module.params) + else: + # get running cluster configuration + rc, out, err = module.run_command('pcs cluster cib') + if rc == 0: + current_cib_root = ET.fromstring(out) + else: + module.fail_json(msg='Failed to load cluster configuration', out=out, error=err) + + # try to find the constraint we have defined + constraint = None + constraints = current_cib_root.findall("./configuration/constraints/rsc_order") + for constr in constraints: + # constraint is matched using following criteria: + # - resource order (resource1 then resource2) + # - resource actions (resource1_action then resource2_action) + # only if above is matched, the constraint is considered to match + if (constr.attrib.get('first') == resource1 + and constr.attrib.get('then') == resource2 + and constr.attrib.get('first-action', 'start') == resource1_action + and constr.attrib.get('then-action', 'start') == resource2_action): + constraint = constr + break + + # additional variables for verbose output on matching the constraint + if constraint is not None: + result.update({ + 'constraint_was_matched': True, + 'resource1_action': None if constraint is None else constraint.attrib.get('first-action'), + 'resource2_action': None if constraint is None else constraint.attrib.get('then-action'), + 'kind': None if constraint is None else constraint.attrib.get('kind'), + 'symmetrical': None if constraint is None else constraint.attrib.get('symmetrical'), + }) + else: + result.update({'constraint_was_matched': False}) + + # order constraint creation command + cmd_create = """ pcs %(cib_file_param)s constraint + order %(resource1_action)s %(resource1)s + then %(resource2_action)s %(resource2)s + kind=%(kind)s symmetrical=%(symmetrical)s """ % module.params + + # order constraint deletion command + if constraint is not None: + cmd_delete = 'pcs %(cib_file_param)s constraint delete ' % module.params + constraint.attrib.get('id') + + if state == 'present' and constraint is None: + # constraint should be present, but we don't see it in configuration - lets create it + result['changed'] = True + if not module.check_mode: + rc, out, err = module.run_command(cmd_create) + if rc == 0: + module.exit_json(**result) + else: + module.fail_json(msg="Failed to create constraint with cmd: '" + cmd_create + "'", output=out, error=err) + + elif state == 'present' and constraint is not None: + # constraint should be present, let see if the relevant attributes are different (if yes, then we need an update) + # constraint is considered different if following attributes are different: + # - symmetrical (true, false) + # - kind (Mandatory, Optional, Serialize) + if constraint.attrib.get('kind', 'Mandatory') != kind or constraint.attrib.get('symmetrical', 'true') != symmetrical: + result['changed'] = True + if not module.check_mode: + rc, out, err = module.run_command(cmd_delete) + if rc != 0: + module.fail_json(msg="Failed to delete constraint for replacement with cmd: '" + cmd_delete + "'", + output=out, error=err) + else: + rc, out, err = module.run_command(cmd_create) + if rc == 0: + module.exit_json(**result) + else: + module.fail_json(msg="Failed to create constraint replacement with cmd: '" + cmd_create + "'", + output=out, error=err, cmd_del=cmd_delete) + + elif state == 'absent' and constraint is not None: + # constraint should not be present but we have found something - lets remove that + result['changed'] = True + if not module.check_mode: + rc, out, err = module.run_command(cmd_delete) + if rc == 0: + module.exit_json(**result) + else: + module.fail_json(msg="Failed to delete constraint with cmd: '" + cmd_delete + "'", output=out, error=err) + else: + # constraint should not be present and is not there, nothing to do + result['changed'] = False + + # END of module + module.exit_json(**result) + + +def main(): + run_module() + + +if __name__ == '__main__': + main() diff --git a/library/pcs_property b/library/pcs_property deleted file mode 100644 index a36d857..0000000 --- a/library/pcs_property +++ /dev/null @@ -1,63 +0,0 @@ -#!/usr/bin/python -# -*- coding: utf-8 -*- - -DOCUMENTATION = ''' ---- -module: pcs_property -short_description: Manages I(pacemaker) cluster properties with pcs tool. -options: - state: - required: false - default: present - choices: [ "absent", "present" ] - name: - required: true - description: name of the property. - value: - required: true - description: value of the property. -''' - -def main(): - module = AnsibleModule( - argument_spec = dict( - state = dict(default='present', choices=['present', 'absent']), - name = dict(required=True), - value = dict(required=True), - ), - supports_check_mode=True, - ) - - # TODO check pcs command is available. - # TODO check pacemaker/corosync is running. - - # Get current property value. - cmd = "pcs property list %(name)s | awk '/^ / { print $2}'" % module.params - rc, out, err = module.run_command(cmd, use_unsafe_shell=True) - value = out.strip() - - if module.params['state'] == 'absent': - print "absent?=?" - if value != '': - changed = True - if not module.check_mode: - cmd = 'pcs property unset %(name)s' % module.params - module.run_command(cmd) - else: - changed = False - module.exit_json(changed=changed) - else: - print "VALUES: %s - %s" % (value, module.params['value']) - if value != module.params['value']: - changed = True - if not module.check_mode: - cmd = 'pcs property set %(name)s=%(value)s' % module.params - module.run_command(cmd) - else: - changed = False - module.exit_json(changed=changed, prev="|%s|" % value, msg="%(name)s=%(value)s" % module.params) - -# import module snippets -from ansible.module_utils.basic import * -main() - diff --git a/library/pcs_property.py b/library/pcs_property.py new file mode 100644 index 0000000..a338d82 --- /dev/null +++ b/library/pcs_property.py @@ -0,0 +1,197 @@ +#!/usr/bin/python +# Copyright: (c) 2018, Ondrej Famera +# GNU General Public License v3.0+ (see LICENSE-GPLv3.txt or https://www.gnu.org/licenses/gpl-3.0.txt) +# Apache License v2.0 (see LICENSE-APACHE2.txt or http://www.apache.org/licenses/LICENSE-2.0) + +from __future__ import absolute_import, division, print_function +__metaclass__ = type + + +ANSIBLE_METADATA = { + 'metadata_version': '1.1', + 'status': ['preview'], + 'supported_by': 'community' +} + +DOCUMENTATION = ''' +--- +author: "Ondrej Famera (@OndrejHome)" +module: pcs_property +short_description: "wrapper module for 'pcs property'" +description: + - "module for setting and unsetting cluster and node properties using 'pcs' utility" +version_added: "2.4" +options: + state: + description: + - "'present' - ensure that cluster property exists with given value" + - "'absent' - ensure cluster property doesn't exist (is unset)" + required: false + default: present + choices: ['present', 'absent'] + type: str + name: + description: + - name of cluster property + required: true + type: str + node: + description: + - node name for node-specific property + required: false + type: str + value: + description: + - value of cluster property + required: false + type: str + cib_file: + description: + - "Apply changes to specified file containing cluster CIB instead of running cluster." + required: false + type: str +notes: + - Tested on CentOS 7.6, Fedora 28, 29 + - Tested on Red Hat Enterprise Linux 7.6 + - node property values with spaces are not idempotent +''' + +EXAMPLES = ''' +- name: set maintenance mode cluster property (enable maintenance mode) + pcs_property: + name: 'maintenance-mode' + value: 'true' + +- name: unset maintenance mode cluster property (disable maintenance mode) + pcs_property: + name: 'maintenance-mode' + state: 'absent' + +- name: set property 'standby' to 'on' for node 'node-1' (standby node-1) + pcs_property: + name: 'standby' + node: 'node-1' + value: 'on' + +- name: remove 'standby' node attribute from 'node-1' (unstandby node-1) + pcs_property: + name: 'standby' + node: 'node-1' + state: 'absent' +''' + +import os.path +import re +from distutils.spawn import find_executable +from ansible.module_utils.basic import AnsibleModule + + +def run_module(): + module = AnsibleModule( + argument_spec=dict( + state=dict(default="present", choices=['present', 'absent']), + name=dict(required=True), + node=dict(required=False), + value=dict(required=False), + cib_file=dict(required=False), + ), + supports_check_mode=True + ) + + state = module.params['state'] + name = module.params['name'] + value = module.params['value'] + node = module.params['node'] + cib_file = module.params['cib_file'] + + result = {} + + if find_executable('pcs') is None: + module.fail_json(msg="'pcs' executable not found. Install 'pcs'.") + + if state == 'present' and value is None: + module.fail_json(msg="To set property 'value' must be specified.") + + module.params['cib_file_param'] = '' + if cib_file is not None and os.path.isfile(cib_file): + module.params['cib_file_param'] = '-f ' + cib_file + + # get property list from running cluster + if node is not None: + rc, out, err = module.run_command('pcs %(cib_file_param)s node attribute' % module.params) + else: + rc, out, err = module.run_command('pcs %(cib_file_param)s property show' % module.params) + properties = {} + if rc == 0: + # indicator in which part of parsing we are + property_type = None + properties['cluster'] = {} + properties['node'] = {} + # we are stripping last line as they doesn't contain properties + for row in out.split('\n')[0:-1]: + # based on row we see the section to either cluster or node properties + if row == 'Cluster Properties:': + property_type = 'cluster' + elif row == 'Node Attributes:': + property_type = 'node' + else: + # when identifier of section is not preset we are at the property + tmp = row.lstrip().split(':') + if property_type == 'cluster': + properties['cluster'][tmp[0]] = tmp[1].lstrip() + elif property_type == 'node': + properties['node'][tmp[0]] = {} + # FIXME: this matches only properties which values doesn't contain spaces + match_node_properties = re.compile(r"(\w+=\w+)\s*") + matched_properties = match_node_properties.findall(':'.join(tmp[1:])) + for prop in matched_properties: + properties['node'][tmp[0]][prop.split('=')[0]] = prop.split('=')[1] + else: + module.fail_json(msg='Failed to load properties from cluster. Is cluster running?') + + result['detected_properties'] = properties + + if state == 'present': + cmd_set = '' + result['changed'] = True + # property not found or having a different value + if node is None and (name not in properties['cluster'] or properties['cluster'][name] != value): + cmd_set = 'pcs %(cib_file_param)s property set %(name)s=%(value)s' % module.params + elif node is not None and (node not in properties['node'] or name not in properties['node'][node] or properties['node'][node][name] != value): + cmd_set = 'pcs %(cib_file_param)s node attribute %(node)s %(name)s=%(value)s' % module.params + else: + result['changed'] = False + if not module.check_mode and result['changed']: + rc, out, err = module.run_command(cmd_set) + if rc == 0: + module.exit_json(**result) + else: + module.fail_json(msg="Failed to set property with cmd : '" + cmd_set + "'", output=out, error=err) + + elif state == 'absent': + result['changed'] = True + cmd_unset = '' + # property found but it should not be set + if node is None and name in properties['cluster']: + cmd_unset = 'pcs %(cib_file_param)s property unset %(name)s' % module.params + elif node is not None and node in properties['node'] and name in properties['node'][node]: + cmd_unset = 'pcs %(cib_file_param)s node attribute %(node)s %(name)s=' % module.params + else: + result['changed'] = False + if not module.check_mode and result['changed']: + rc, out, err = module.run_command(cmd_unset) + if rc == 0: + module.exit_json(**result) + else: + module.fail_json(msg="Failed to unset property with cmd: '" + cmd_unset + "'", output=out, error=err) + + # END of module + module.exit_json(**result) + + +def main(): + run_module() + + +if __name__ == '__main__': + main() diff --git a/library/pcs_quorum_qdevice.py b/library/pcs_quorum_qdevice.py new file mode 100644 index 0000000..ca89224 --- /dev/null +++ b/library/pcs_quorum_qdevice.py @@ -0,0 +1,212 @@ +#!/usr/bin/python +# GNU General Public License v3.0+ (see LICENSE-GPLv3.txt or https://www.gnu.org/licenses/gpl-3.0.txt) +# Apache License v2.0 (see LICENSE-APACHE2.txt or http://www.apache.org/licenses/LICENSE-2.0) + +from __future__ import absolute_import, division, print_function +__metaclass__ = type + +ANSIBLE_METADATA = { + 'metadata_version': '1.1', + 'status': ['preview'], + 'supported_by': 'community' +} + +DOCUMENTATION = ''' +--- +author: "Olivier Pouilly (@OliPou)" +module: pcs_quorum_qdevice +short_description: "wrapper module for 'pcs quorum setup/destroy/change qdevice setting'" +description: + - "module for setup/destroy/change qdevice setting 'pcs' utility" +version_added: "2.10" +options: + state: + description: + - "'present' - ensure that the qdevice exists" + - "'absent' - ensure qdevice doesn't exist" + required: false + default: present + choices: ['present', 'absent'] + type: str + qdevice: + description: + - qdevice name (hostname or IP address) + required: false + type: str + algorithm: + description: + - algorithm use by the cluster + required: false + choices: ['ffsplit', 'lms'] + default: ffsplit + type: str + allowed_qdevice_changes: + description: + - "'none' - existing qdevice and algorithm must match" + - "'update' - allow qdevice and/or algorithm update" + default: none + required: false + choices: ['none', 'update'] + type: str +notes: + - Tested on Debian 10 + - "When adding/removing qdevice, make sure to use 'run_once=True' on a cluster node" +''' + +EXAMPLES = ''' +- name: Setup qdevice with default algorithm (ffsplit) + pcs_quorum_qdevice: + qdevice: qdevice-name + run_once: True + +- name: Setup qdevice with lms algorithm + pcs_quorum_qdevice: + qdevice: qdevice-name + algorithm: lms + run_once: True + +- name: Delete qdevice + pcs_quorum_qdevice: + state: absent + run_once: True + +- name: Setup or modify qdevice to use lms algorith + pcs_quorum_qdevice: + qdevice: qdevice-name + algorithm: lms + allowed_qdevice_changes: update + run_once: True +''' + +import os.path +import re +from distutils.spawn import find_executable + +from ansible.module_utils.basic import AnsibleModule + + +def run_module(): + module = AnsibleModule( + argument_spec=dict( + state=dict(required=False, default="present", choices=['present', 'absent']), + qdevice=dict(required=False, type='str'), + algorithm=dict(required=False, default="ffsplit", choices=['ffsplit', 'lms']), + allowed_qdevice_changes=dict(required=False, default="none", choices=['none', 'update']), + ), + supports_check_mode=True + ) + + state = module.params['state'] + allowed_qdevice_changes = module.params['allowed_qdevice_changes'] + qdevice = module.params['qdevice'] + algorithm = module.params['algorithm'] + if state == 'present' and (not module.params['qdevice']): + module.fail_json(msg='When creating/updating qdevice you must specify qdevice name') + result = {} + + if find_executable('pcs') is None: + module.fail_json(msg="'pcs' executable not found. Install 'pcs'.") + + # get the pcs major.minor version + rc, out, err = module.run_command('pcs --version') + if rc == 0: + pcs_version = out.split('.')[0] + '.' + out.split('.')[1] + else: + module.fail_json(msg="pcs --version exited with non-zero exit code (" + rc + "): " + out + err) + + if pcs_version != '0.10': + module.fail_json(msg="unsupported version of pcs (" + pcs_version + "). Only version 0.10 is supported.") + + # EL 7 configuration file + corosync_conf_exists = os.path.isfile('/etc/corosync/corosync.conf') + + if state == 'present' and not corosync_conf_exists: + module.fail_json(msg='When creating/updating qdevice you must have a cluster set') + + try: + corosync_conf = open('/etc/corosync/corosync.conf', 'r') + qdevice_defined = re.compile(r"device\s*\{([^}]+)\}", re.M + re.S) + re_qdevice_defined = qdevice_defined.findall(corosync_conf.read()) + except IOError as e: + module.fail_json(msg='Could not open corosync.conf') + + if len(re_qdevice_defined) == 0: + no_conf, config_qdevice_name_diff, config_qdevice_algo_diff = True, False, False + else: + no_conf = False + + qdevice_name = re.compile(r"host\s*:\s*([\w.-]+)\s*", re.M) + qd_name = qdevice_name.findall(re_qdevice_defined[0]) + + if len(qd_name) == 0 or qd_name[0] != qdevice: + config_qdevice_name_diff = True + else: + config_qdevice_name_diff = False + + algorithm_name = re.compile(r"algorithm\s*:\s*([\w.-]+)\s*", re.M) + algo_name = algorithm_name.findall(re_qdevice_defined[0]) + if len(algo_name) == 0 or algo_name[0] != algorithm: + config_qdevice_algo_diff = True + else: + config_qdevice_algo_diff = False + + update, mismatch_options = False, False + msg = '' + + if no_conf and state == 'present': + result['changed'] = True + result['new_qdevice'] = qdevice + result['new_algorithm'] = algorithm + cmd = 'pcs quorum device add model net host=%(qdevice)s algorithm=%(algorithm)s' % module.params + update = True + + elif (config_qdevice_name_diff or config_qdevice_algo_diff) and allowed_qdevice_changes != 'none' and state == 'present': + result['changed'] = True + result['old_qdevice'] = qd_name + result['new_qdevice'] = qdevice + result['old_algorithm'] = algo_name + result['new_algorithm'] = algorithm + cmd = 'pcs quorum device update model host=%(qdevice)s algorithm=%(algorithm)s' % module.params + update = True + + elif state == 'absent' and not no_conf: + result['changed'] = True + result['delete_qdevice'] = qd_name[0] + cmd = 'pcs quorum device remove' + update = True + + if config_qdevice_name_diff and allowed_qdevice_changes == 'none' and state == 'present': + mismatch_options = True + result['qdevice'] = qdevice + result['qdevice_detected'] = qd_name + + if config_qdevice_algo_diff and allowed_qdevice_changes == 'none' and state == 'present': + mismatch_options = True + result['algorithm'] = algorithm + result['algorithm_detected'] = algo_name + + if mismatch_options: + if 'qdevice' in result: + msg += "'Detected qdevice' and 'Requested qdevice' are different, but changes are not allowed." + if 'algorithm' in result: + msg += "'Detected algorithm' and 'Requested algorithm' are different, but changes are not allowed." + result['msg'] = msg + module.fail_json(**result) + + if not module.check_mode and update: + rc, out, err = module.run_command(cmd) + if rc == 0: + module.exit_json(**result) + else: + module.fail_json(msg="Failed to setup qdevice using command '" + cmd + "'", output=out, error=err) + + # END of module + module.exit_json(**result) + + +def main(): + run_module() + + +if __name__ == '__main__': + main() diff --git a/library/pcs_resource b/library/pcs_resource deleted file mode 100644 index 3bcf90a..0000000 --- a/library/pcs_resource +++ /dev/null @@ -1,117 +0,0 @@ -#!/usr/bin/python -# -*- coding: utf-8 -*- - -DOCUMENTATION = ''' ---- -module: pcs_resource -short_description: Manages I(pacemaker) cluster resources with pcs tool. -options: - command: - required: true - description: Supported commands. - choices: [ "create", "master"] - resource_id: - required: true - description: Id of the resource. - type: - required: true - description: type of resource. Used in «create» command. - ms_name: - required: true - description: name of the resource. Used in «master» command. - group: - required: false - description: add the resource to specified group. - options: - required: false - description: hash of resource options. - operations: - required: false - description: list of hashes of operations. Used in «create» command. - disabled: - required: false - type: bool - description: don't start resource after creation. -''' - -def main(): - module = AnsibleModule( - argument_spec = dict( - command = dict(choices=['create', 'master']), - name = dict(required=True, aliases=['resource_id']), - ms_name = dict(required=False, type='str'), - type = dict(required=False), - group = dict(required=False, type='str'), - options = dict(required=False, type='dict'), - operations = dict(required=False, type='raw'), - disabled = dict(required=False, type='bool'), - ), - supports_check_mode=True, - ) - - # TODO check pcs command is available. - # TODO check pacemaker/corosync is running. - - # Check if resource already exists. - cmd = "pcs resource show %(name)s" % module.params - rc, out, err = module.run_command(cmd) - exists = (rc is 0) - - if exists: - module.exit_json(changed=False, msg="Resource already exists.") - elif module.check_mode: - module.exit_json(changed=True) - - # Validate and process command specific params. - if module.params['command'] == 'create': - if not module.params.has_key('type'): - module.fail_json(msg="missing required arguments: type.") - if not module.params.has_key('options'): - module.fail_json(msg="missing required arguments: options.") - # Command template. - cmd = 'pcs resource %(command)s %(resource_id)s %(type)s %(options)s' - # Process operations. - if module.params.has_key('operations'): - cmd += ' %(operations)s' - operations = [] - for op in module.params['operations']: - op['options'] = ' '.join(['%s="%s"' % (key, value) for (key, value) in op['options'].items()]) - operations.append('op %(action)s %(options)s' % op) - module.params['operations'] = ' '.join(operations) - - elif module.params['command'] == 'master': - if not module.params.has_key('options'): - module.fail_json(msg="missing required arguments: options.") - if not module.params.has_key('ms_name'): - module.fail_json(msg="missing required arguments: ms_name.") - # Command template. - cmd = 'pcs resource %(command)s %(name)s %(ms_name)s %(options)s' - - # Process options. - if module.params.has_key('options'): - options = module.params['options'] - if options: - options = ' '.join(['%s="%s"' % (key, value) for (key, value) in options.items()]) - module.params['options'] = options - - if module.params.has_key('group'): - if module.params['group']: - cmd += ' --group ' + module.params['group'] - - if module.params.has_key('disabled'): - if module.params['disabled']: - cmd += ' --disabled' - - # Run command. - cmd = cmd % module.params - message = 'Running cmd: %s' % cmd - rc, out, err = module.run_command(cmd) - if rc is 1: - module.fail_json(msg="Execution failed.\nCommand: `%s`\nError: %s" % (cmd, err)) - - module.exit_json(changed=True, msg=message) - -# import module snippets -from ansible.module_utils.basic import * -main() - diff --git a/library/pcs_resource.py b/library/pcs_resource.py new file mode 100644 index 0000000..979014b --- /dev/null +++ b/library/pcs_resource.py @@ -0,0 +1,501 @@ +#!/usr/bin/python +# Copyright: (c) 2018, Ondrej Famera +# GNU General Public License v3.0+ (see LICENSE-GPLv3.txt or https://www.gnu.org/licenses/gpl-3.0.txt) +# Apache License v2.0 (see LICENSE-APACHE2.txt or http://www.apache.org/licenses/LICENSE-2.0) + +from __future__ import absolute_import, division, print_function +__metaclass__ = type + +ANSIBLE_METADATA = { + 'metadata_version': '1.1', + 'status': ['preview'], + 'supported_by': 'community' +} + +DOCUMENTATION = ''' +--- +author: "Ondrej Famera (@OndrejHome)" +module: pcs_resource +short_description: "wrapper module for 'pcs resource' " +description: + - "Module for creating, deleting and updating clusters resources using 'pcs' utility." + - "This module should be executed for same resorce only on one of the nodes in cluster at a time." +version_added: "2.4" +options: + state: + description: + - "'present' - ensure that cluster resource exists" + - "'absent' - ensure cluster resource doesn't exist" + required: false + default: present + choices: ['present', 'absent'] + type: str + name: + description: + - "name of cluster resource - cluster resource identifier" + required: true + type: str + resource_class: + description: + - class of cluster resource + required: false + default: 'ocf' + choices: ['ocf', 'systemd', 'stonith', 'master', 'promotable'] + type: str + resource_type: + description: + - cluster resource type + required: false + type: str + options: + description: + - "additional options passed to 'pcs' command" + required: false + type: str + force_resource_update: + description: + - "skip checking for cluster changes when updating existing resource configuration + - use 'scope=resources' when pushing the change to cluster. Useful in busy clusters, + dangerous when there are concurent updates as they can be lost." + required: false + default: no + type: bool + cib_file: + description: + - "Apply changes to specified file containing cluster CIB instead of running cluster." + - "This module requires the file to already contain cluster configuration." + required: false + type: str + child_name: + description: + - "define custom name of child resource when creating multistate resource ('master' or 'promotable' resource_class)." + - "If not specified then the child resource name will have for of name+'-child'." + required: false + type: str + ignored_meta_attributes: + description: + - "list of meta attributes that will be ignored when comparing existing resources" + required: false + default: [] + type: list + elements: str +notes: + - tested on CentOS 6.8, 7.3 + - module can create and delete clones, groups and master resources indirectly - + resource can specify --clone, --group, --master option which will cause them to create + or become part of clone/group/master +''' + +EXAMPLES = ''' +- name: ensure Dummy('ocf:pacemaker:Dummy') resource with name 'test' is present + pcs_resource: + name: 'test' + resource_type: 'ocf:pacemaker:Dummy' + +- name: create 'stonith' class resource 'kdump' of type 'fence_kdump' + pcs_resource: + name: 'kdump' + resource_type: 'fence_kdump' + resource_class: 'stonith' + +- name: ensure that resource with name 'vip' is not present + pcs_resource: + name: 'vip' + state: 'absent' + +- name: ensure resource 'test2' of IPaddr2('ocf:heartbeat:IPaddr2') type exists an has 5 second monitor interval + pcs_resource: + name: 'test2' + resource_type: 'ocf:heartbeat:IPaddr2' + options: 'ip=192.168.1.2 op monitor interval=5' + +- name: create resource in group 'testgrp' + pcs_resource: + name: 'test3' + resource_type: 'ocf:pacemaker:Dummy' + options: '--group testgrp' + +- name: create multistate (Master/Slave) resource 'test' of 'ocf:pacemaker:Stateful' type - pcs-0.9 + pcs_resource: + name: 'test' + resource_type: 'ocf:pacemaker:Stateful' + resource_class: 'master' + options: > + fake=some_value --master meta master-max=1 master-node-max=1 clone-max=2 clone-node-max=1 notify=true + op monitor interval=60s meta resource-stickiness=100 + +- name: create multistate (Promotable) resource 'test' of 'ocf:pacemaker:Stateful' type - pcs-0.10 + pcs_resource: + name: 'test' + resource_type: 'ocf:pacemaker:Stateful' + resource_class: 'promotable' + options: > + fake=some_value promotable meta promotable-max=1 promotable-node-max=1 clone-max=2 clone-node-max=1 notify=true + op monitor interval=60s meta resource-stickiness=100 + +- name: ensure Dummy('ocf:pacemaker:Dummy') resource with name 'test' is present, but ignore if it is enabled or disabled (ignore target-role) + pcs_resource: + name: 'test' + resource_type: 'ocf:pacemaker:Dummy' + ignored_meta_attributes: [ 'target-role' ] +''' + +# TODO if group exists and is not part of group, then specifying group won't put it into group +# same problem is with clone and master - it might be better to make this functionality into separate module + +import sys +import os.path +import xml.etree.ElementTree as ET +import tempfile +import re +from distutils.spawn import find_executable +from ansible.module_utils.basic import AnsibleModule + +# determine if we have 'to_native' function that we can use for 'ansible --diff' output +to_native_support = False +try: + from ansible.module_utils._text import to_native + to_native_support = True +except ImportError: + pass + + +def replace_element(elem, replacement): + elem.clear() + elem.text = replacement.text + elem.tail = replacement.tail + elem.tag = replacement.tag + elem.attrib = replacement.attrib + elem[:] = replacement[:] + + +def compare_resources(module, res1, res2): + # we now have 2 nodes that we can compare, so lets dump them into files for comparring + n1_file_fd, n1_tmp_path = tempfile.mkstemp() + n2_file_fd, n2_tmp_path = tempfile.mkstemp() + n1_file = open(n1_tmp_path, 'w') + n2_file = open(n2_tmp_path, 'w') + # dump the XML resource definitions into temporary files + sys.stdout = n1_file + ET.dump(res1) + sys.stdout = n2_file + ET.dump(res2) + sys.stdout = sys.__stdout__ + # close files + n1_file.close() + n2_file.close() + # normalize the files and store results in new files - this also removes some unimportant spaces and stuff + n3_file_fd, n3_tmp_path = tempfile.mkstemp() + n4_file_fd, n4_tmp_path = tempfile.mkstemp() + rc, out, err = module.run_command('xmllint --format --output ' + n3_tmp_path + ' ' + n1_tmp_path) + rc, out, err = module.run_command('xmllint --format --output ' + n4_tmp_path + ' ' + n2_tmp_path) + + # add files that should be cleaned up + module.add_cleanup_file(n1_tmp_path) + module.add_cleanup_file(n2_tmp_path) + module.add_cleanup_file(n3_tmp_path) + module.add_cleanup_file(n4_tmp_path) + + # now compare files + diff = '' + rc, out, err = module.run_command('diff ' + n3_tmp_path + ' ' + n4_tmp_path) + if rc != 0: + # if there was difference then show the diff + n3_file = open(n3_tmp_path, 'r+') + n4_file = open(n4_tmp_path, 'r+') + if to_native_support: + # produce diff only where we have to_native function which give sensible output + # without 'to_native' whole text is wrapped as single line and not diffed + # seems that to_native was added in ansible-2.2 (commit 57701d7) + diff = { + 'before_header': '', + 'before': to_native(''.join(n3_file.readlines())), + 'after_header': '', + 'after': to_native(''.join(n4_file.readlines())), + } + return rc, diff + + +def find_resource(cib, resource_id): + my_resource = None + tags = ['group', 'clone', 'master', 'primitive'] + for elem in list(cib): + if elem.attrib.get('id') == resource_id: + return elem + elif elem.tag in tags: + my_resource = find_resource(elem, resource_id) + if my_resource is not None: + break + return my_resource + + +def rename_multistate_element(multistate_resource, resource_name, child_name, resource_suffix): + multistate_resource.set('id', resource_name) + # search for meta_attributes tag + for elem in list(multistate_resource): + if elem.tag == 'meta_attributes': + new_meta_id = re.sub('^' + child_name + resource_suffix, resource_name, elem.attrib.get('id')) + elem.set('id', new_meta_id) + # replace ID of all nvpairs inside of this meta_attributes + for nvpair in list(elem): + new_nvpair_id = re.sub('^' + child_name + resource_suffix, resource_name, nvpair.attrib.get('id')) + nvpair.set('id', new_nvpair_id) + + +def remove_ignored_meta_attributes(resource, ignored_meta_attributes): + for elem in list(resource): + if elem.tag == 'meta_attributes' and len(list(elem)) > 0: + for nvpair in list(elem): + if nvpair.tag == 'nvpair' and nvpair.attrib.get('name') in ignored_meta_attributes: + elem.remove(nvpair) + + +def remove_empty_meta_attributes_tag(resource): + # remove the meta_attribute element to make comparison clean - Issue #10 + # some versions of 'pcs' left empty 'meta_attributes' tag after 'pcs resource enable' + for elem in list(resource): + if elem.tag == 'meta_attributes' and len(list(elem)) == 0: + resource.remove(elem) + + +def run_module(): + module = AnsibleModule( + argument_spec=dict( + state=dict(default="present", choices=['present', 'absent']), + name=dict(required=True), + resource_class=dict(default="ocf", choices=['ocf', 'systemd', 'stonith', 'master', 'promotable']), + resource_type=dict(required=False), + options=dict(default="", required=False), + force_resource_update=dict(default=False, type='bool', required=False), + cib_file=dict(required=False), + child_name=dict(required=False), + ignored_meta_attributes=dict(required=False, type='list', elements='str', default=[]), + ), + supports_check_mode=True + ) + + state = module.params['state'] + resource_name = module.params['name'] + resource_class = module.params['resource_class'] + cib_file = module.params['cib_file'] + if 'child_name' in module.params and module.params['child_name'] is None: + module.params['child_name'] = resource_name + '-child' + child_name = module.params['child_name'] + resource_options = module.params['options'] + ignored_meta_attributes = module.params['ignored_meta_attributes'] + + if state == 'present' and (not module.params['resource_type']): + module.fail_json(msg='When creating cluster resource you must specify the resource_type') + result = {} + + if find_executable('pcs') is None: + module.fail_json(msg="'pcs' executable not found. Install 'pcs'.") + + # get the pcs major.minor version + rc, out, err = module.run_command('pcs --version') + if rc == 0: + pcs_version = out.split('.')[0] + '.' + out.split('.')[1] + else: + module.fail_json(msg="pcs --version exited with non-zero exit code (" + rc + "): " + out + err) + + # check if 'master' and 'promotable' classes have the needed keyword in options + if resource_class == 'master' and not ('--master' in resource_options or 'master' in resource_options): + module.fail_json(msg='When creating Master/Slave resource you must specify keyword "master" or "--master" in "options"') + if resource_class == 'promotable' and 'promotable' not in resource_options: + module.fail_json(msg='When creating promotable resource you must specify keyword "promotable" in "options"') + + module.params['cib_file_param'] = '' + if cib_file is not None: + # use cib_file if specified + if os.path.isfile(cib_file): + try: + current_cib = ET.parse(cib_file) + except Exception as e: + module.fail_json(msg="Error encountered parsing the cib_file - %s" % (e)) + current_cib_root = current_cib.getroot() + module.params['cib_file_param'] = '-f ' + cib_file + else: + module.fail_json(msg="%(cib_file)s is not a file or doesn't exists" % module.params) + else: + # get running cluster configuration + rc, out, err = module.run_command('pcs cluster cib') + if rc == 0: + current_cib_root = ET.fromstring(out) + else: + module.fail_json(msg='Failed to load cluster configuration', out=out, error=err) + + # try to find the resource that we seek + resource = None + cib_resources = current_cib_root.find('./configuration/resources') + resource = find_resource(cib_resources, resource_name) + + if state == 'present' and resource is None: + # resource should be present, but we don't see it in configuration - lets create it + result['changed'] = True + if not module.check_mode: + if resource_class == 'stonith': + cmd = 'pcs %(cib_file_param)s stonith create %(name)s %(resource_type)s %(options)s' % module.params + elif resource_class == 'master' or resource_class == 'promotable': + # we first create Master/Slave or Promotable resource with child_name and later rename it + cmd = 'pcs %(cib_file_param)s resource create %(child_name)s %(resource_type)s %(options)s' % module.params + else: + cmd = 'pcs %(cib_file_param)s resource create %(name)s %(resource_type)s %(options)s' % module.params + rc, out, err = module.run_command(cmd) + if rc != 0 and "Call cib_replace failed (-62): Timer expired" in err: + # EL6: special retry when we failed to create resource because of timer waiting on cib expired + rc, out, err = module.run_command(cmd) + if rc == 0: + if resource_class == 'master' or resource_class == 'promotable': + # rename the resource to desirable name + rc, out, err = module.run_command('pcs cluster cib') + if rc == 0: + updated_cib_root = ET.fromstring(out) + multistate_resource = None + updated_cib_resources = updated_cib_root.find('./configuration/resources') + resource_suffix = '-master' if pcs_version == '0.9' else '-clone' + multistate_resource = find_resource(updated_cib_resources, child_name + resource_suffix) + if multistate_resource is not None: + rename_multistate_element(multistate_resource, resource_name, child_name, resource_suffix) + ## + # when not using cib_file then we continue preparing changes for cib-push into running cluster + new_cib = ET.ElementTree(updated_cib_root) + new_cib_fd, new_cib_path = tempfile.mkstemp() + module.add_cleanup_file(new_cib_path) + new_cib.write(new_cib_path) + push_scope = 'scope=resources' if module.params['force_resource_update'] else '' + push_cmd = 'pcs cluster cib-push --config ' + push_scope + ' ' + new_cib_path + rc, out, err = module.run_command(push_cmd) + if rc == 0: + module.exit_json(changed=True) + else: + # rollback the failed rename by deleting the multistate resource + cmd = 'pcs %(cib_file_param)s resource delete %(child_name)s' % module.params + rc2, out2, err2 = module.run_command(cmd) + if rc2 == 0: + module.fail_json(msg="Failed to push updated configuration for multistate resource to cluster using command '" + push_cmd + + "'. Creation of multistate resource was rolled back. You can retry this task with " + + "'force_resource_update=true' to see if that helps.", output=out, error=err) + else: + module.fail_json(msg="Failed to delete resource after unsuccessful multistate resource configuration update using command '" + + cmd + "'", output=out2, error=err2) + else: + module.fail_json(msg="Failed to detect multistate resource after creating it with cmd '" + cmd + "'!", + output=out, error=err, previous_cib=current_cib) + module.exit_json(changed=True) + else: + module.fail_json(msg="Failed to create resource using command '" + cmd + "'", output=out, error=err) + + elif state == 'present' and resource is not None: + # resource should be present and we have find resource with such ID - lets compare it with definition if it needs a change + + # lets simulate how the resource would look like if it was created using command we have + clean_cib_fd, clean_cib_path = tempfile.mkstemp() + module.add_cleanup_file(clean_cib_path) + module.do_cleanup_files() + # we must be sure that clean_cib_path is empty + if resource_class == 'stonith': + cmd = 'pcs -f ' + clean_cib_path + ' stonith create %(name)s %(resource_type)s %(options)s' % module.params + elif resource_class == 'master' or resource_class == 'promotable': + # we first create Master/Slave or Promotable resource with child_name and later rename it + cmd = 'pcs -f ' + clean_cib_path + ' resource create %(child_name)s %(resource_type)s %(options)s' % module.params + else: + cmd = 'pcs -f ' + clean_cib_path + ' resource create %(name)s %(resource_type)s %(options)s' % module.params + rc, out, err = module.run_command(cmd) + if rc == 0: + if resource_class == 'master' or resource_class == 'promotable': + # deal with multistate resources + clean_cib = ET.parse(clean_cib_path) + clean_cib_root = clean_cib.getroot() + multistate_resource = None + updated_cib_resources = clean_cib_root.find('./configuration/resources') + resource_suffix = '-master' if pcs_version == '0.9' else '-clone' + multistate_resource = find_resource(updated_cib_resources, child_name + resource_suffix) + if multistate_resource is not None: + rename_multistate_element(multistate_resource, resource_name, child_name, resource_suffix) + # we try to write the changes into temporary cib_file + try: + clean_cib.write(clean_cib_path) + except Exception as e: + module.fail_json(msg="Error encountered writing intermediate multistate result to clean_cib_path - %s" % (e)) + else: + module.fail_json(msg="Failed to detect intermediate multistate resource after creating it with cmd '" + cmd + "'!", + output=out, error=err, previous_cib=current_cib) + + # we have a comparable resource created in clean cluster, so lets select it and compare it + clean_cib = ET.parse(clean_cib_path) + clean_cib_root = clean_cib.getroot() + clean_resource = None + cib_clean_resources = clean_cib_root.find('./configuration/resources') + clean_resource = find_resource(cib_clean_resources, resource_name) + + if clean_resource is not None: + # cleanup the definition of resource and clean_resource before comparison + remove_ignored_meta_attributes(resource, ignored_meta_attributes) + remove_empty_meta_attributes_tag(resource) + + remove_ignored_meta_attributes(clean_resource, ignored_meta_attributes) + remove_empty_meta_attributes_tag(clean_resource) + + # compare the existing resource in cluster and simulated clean_resource + rc, diff = compare_resources(module, resource, clean_resource) + if rc == 0: + # if no differnces were find there is no need to update the resource + module.exit_json(changed=False) + else: + # otherwise lets replace the resource with new one + result['changed'] = True + result['diff'] = diff + if not module.check_mode: + replace_element(resource, clean_resource) + # when we use cib_file then we can dump the changed CIB directly into file + if cib_file is not None: + try: + current_cib.write(cib_file) # FIXME add try/catch for writing into file + except Exception as e: + module.fail_json(msg="Error encountered writing result to cib_file - %s" % (e)) + module.exit_json(changed=True) + # when not using cib_file then we continue preparing changes for cib-push into running cluster + new_cib = ET.ElementTree(current_cib_root) + new_cib_fd, new_cib_path = tempfile.mkstemp() + module.add_cleanup_file(new_cib_path) + new_cib.write(new_cib_path) + push_scope = 'scope=resources' if module.params['force_resource_update'] else '' + push_cmd = 'pcs cluster cib-push ' + push_scope + ' ' + new_cib_path + rc, out, err = module.run_command(push_cmd) + if rc == 0: + module.exit_json(changed=True) + else: + module.fail_json(msg="Failed to push updated configuration to cluster using command '" + push_cmd + "'", output=out, error=err) + else: + module.fail_json(msg="Unable to find simulated resource, This is most probably a bug.") + else: + module.fail_json(msg="Unable to simulate resource with given definition using command '" + cmd + "'", output=out, error=err) + + elif state == 'absent' and resource is not None: + # resource should not be present but we have found something - lets remove that + result['changed'] = True + if not module.check_mode: + if resource_class == 'stonith': + cmd = 'pcs %(cib_file_param)s stonith delete %(name)s' % module.params + else: + cmd = 'pcs %(cib_file_param)s resource delete %(name)s' % module.params + rc, out, err = module.run_command(cmd) + if rc == 0: + module.exit_json(changed=True) + else: + module.fail_json(msg="Failed to delete resource using command '" + cmd + "'", output=out, error=err) + + else: + # resource should not be present and is nto there, nothing to do + result['changed'] = False + + # END of module + module.exit_json(**result) + + +def main(): + run_module() + + +if __name__ == '__main__': + main() diff --git a/library/pcs_resource_defaults.py b/library/pcs_resource_defaults.py new file mode 100644 index 0000000..bc3c883 --- /dev/null +++ b/library/pcs_resource_defaults.py @@ -0,0 +1,187 @@ +#!/usr/bin/python +# Copyright: (c) 2018, Ondrej Famera +# GNU General Public License v3.0+ (see LICENSE-GPLv3.txt or https://www.gnu.org/licenses/gpl-3.0.txt) +# Apache License v2.0 (see LICENSE-APACHE2.txt or http://www.apache.org/licenses/LICENSE-2.0) + +from __future__ import absolute_import, division, print_function +__metaclass__ = type + +ANSIBLE_METADATA = { + 'metadata_version': '1.1', + 'status': ['preview'], + 'supported_by': 'community' +} + +DOCUMENTATION = ''' +--- +author: "Ondrej Famera (@OndrejHome)" +module: pcs_resource_defaults +short_description: "wrapper module for 'pcs resource defaults' and 'pcs resource op defaults'" +description: + - "module for setting and unsetting clusters resource deafults and resource operation defaults using 'pcs' utility" +version_added: "2.4" +options: + state: + description: + - "'present' - ensure that resource default exists with given value" + - "'absent' - ensure resource default doesn't exist (is unset)" + required: false + default: present + choices: ['present', 'absent'] + type: str + defaults_type: + description: + - "'meta' - resource meta defaults, 'pcs resource defaults ...'" + - "'op' - resource operation defaults, 'pcs resource op defaults ...'" + required: false + default: meta + choices: ['meta', 'op'] + type: str + name: + description: + - name of cluster resource default + required: true + type: str + value: + description: + - value of cluster resource default + required: false + type: str + cib_file: + description: + - "Apply changes to specified file containing cluster CIB instead of running cluster." + required: false + type: str +notes: + - tested on CentOS 6.10 - pcs 0.9.155 + - tested on CentOS 7.9 - pcs 0.9.169 + - tested on CentOS 8.2 - pcs 0.10.4 + - tested on Fedora 32 - pcs 0.10.7 +''' + +EXAMPLES = ''' +- name: set resource-stickiness=100 to be default for resources + pcs_resource_defaults: + name: 'resource-stickiness' + value: '100' + +- name: remove the 'resource-stickiness' resource default + pcs_resource_defaults: + name: 'resource-stickiness' + state: 'absent' + +- name: set default operation timeout for resources to 60 + pcs_resource_defaults: + defaults_type: 'op' + name: 'timeout' + value: '60' + +- name: remove the custom default operation timeout + pcs_resource_defaults: + defaults_type: 'op' + name: 'timeout' + state: 'absent' +''' + +import os.path +from distutils.spawn import find_executable +from ansible.module_utils.basic import AnsibleModule + + +def run_module(): + module = AnsibleModule( + argument_spec=dict( + state=dict(default="present", choices=['present', 'absent']), + defaults_type=dict(required=False, default="meta", choices=['meta', 'op']), + name=dict(required=True), + value=dict(required=False), + cib_file=dict(required=False), + ), + supports_check_mode=True + ) + + state = module.params['state'] + name = module.params['name'] + defaults_type = module.params['defaults_type'] + value = module.params['value'] + cib_file = module.params['cib_file'] + + result = {} + + if find_executable('pcs') is None: + module.fail_json(msg="'pcs' executable not found. Install 'pcs'.") + + if state == 'present' and value is None: + module.fail_json(msg="To set a defaults 'value' must be specified.") + + module.params['cib_file_param'] = '' + if cib_file is not None and os.path.isfile(cib_file): + module.params['cib_file_param'] = '-f ' + cib_file + + # get defaults list from running cluster + if defaults_type == 'meta': + rc, out, err = module.run_command('pcs %(cib_file_param)s resource defaults' % module.params) + elif defaults_type == 'op': + rc, out, err = module.run_command('pcs %(cib_file_param)s resource op defaults' % module.params) + else: + module.fail_json(msg="'" + defaults_type + "' is not implemented by this module") + + defaults = {} + if rc == 0: + for row in out.split('\n')[:-1]: + if row == 'No defaults set': + break + if row == 'Meta Attrs: rsc_defaults-options' or row == 'Meta Attrs: op_defaults-options': + continue + tmp = row.split(':') if ':' in row else row.split('=') + defaults[tmp[0].strip()] = tmp[1].lstrip() + else: + module.fail_json(msg='Failed to load resource defaults from cluster. Is cluster running?') + + result['detected_defaults'] = defaults + + if state == 'present' and (name not in defaults or defaults[name] != value): + # default not found or having a different value + result['changed'] = True + if not module.check_mode: + if defaults_type == 'meta': + cmd_set = 'pcs %(cib_file_param)s resource defaults %(name)s=%(value)s' % module.params + elif defaults_type == 'op': + cmd_set = 'pcs %(cib_file_param)s resource op defaults %(name)s=%(value)s' % module.params + else: + module.fail_json(msg="'" + defaults_type + "' is not implemented by this module") + rc, out, err = module.run_command(cmd_set) + if rc == 0: + module.exit_json(**result) + else: + module.fail_json(msg="Failed to set " + defaults_type + " with cmd : '" + cmd_set + "'", output=out, error=err) + + elif state == 'absent' and name in defaults: + # default found but it should not be set + result['changed'] = True + if not module.check_mode: + if defaults_type == 'meta': + cmd_unset = 'pcs %(cib_file_param)s resource defaults %(name)s=' % module.params + elif defaults_type == 'op': + cmd_unset = 'pcs %(cib_file_param)s resource op defaults %(name)s=' % module.params + else: + module.fail_json(msg="'" + defaults_type + "' is not implemented by this module") + rc, out, err = module.run_command(cmd_unset) + if rc == 0: + module.exit_json(**result) + else: + module.fail_json(msg="Failed to unset " + defaults_type + " default with cmd: '" + cmd_unset + "'", output=out, error=err) + else: + # No change needed + result['changed'] = False + + # END of module + module.exit_json(**result) + + +def main(): + run_module() + + +if __name__ == '__main__': + main() diff --git a/library/pcs_stonith_level.py b/library/pcs_stonith_level.py new file mode 100644 index 0000000..b15a828 --- /dev/null +++ b/library/pcs_stonith_level.py @@ -0,0 +1,186 @@ +#!/usr/bin/python +# Copyright: (c) 2021, Ondrej Famera +# GNU General Public License v3.0+ (see LICENSE-GPLv3.txt or https://www.gnu.org/licenses/gpl-3.0.txt) +# Apache License v2.0 (see LICENSE-APACHE2.txt or http://www.apache.org/licenses/LICENSE-2.0) + +from __future__ import absolute_import, division, print_function +__metaclass__ = type + +ANSIBLE_METADATA = { + 'metadata_version': '1.1', + 'status': ['preview'], + 'supported_by': 'community' +} + +DOCUMENTATION = ''' +--- +author: "Ondrej Famera (@OndrejHome)" +module: pcs_stonith_level +short_description: "wrapper module for 'pcs stonith level'" +description: + - "module for creating and deleting stonith levels using 'pcs' utility" +version_added: "2.4" +options: + state: + description: + - "'present' - ensure that stonith level for given node and stonith device exists" + - "'absent' - ensure that stonith level for given node and stonith device doesn't exist" + required: false + default: present + choices: ['present', 'absent'] + type: str + level: + description: + - numerical stonith level (1-9) + required: true + choices: [1, 2, 3, 4, 5, 6, 7, 8, 9] + type: int + node_name: + description: + - name of cluster node for this stonith level and stonith_device + required: true + type: str + stonith_device: + description: + - name of existing stonith device + required: true + type: str + cib_file: + description: + - "Apply changes to specified file containing cluster CIB instead of running cluster." + - "This module requires the file to already contain cluster configuration." + required: false + type: str +notes: + - when deleting the stonith level only exact match is being deleted - same behaviour as pcs + - tested on CentOS 7.9/8.3 +''' + +EXAMPLES = ''' +- name: add fence-kdump as level 1 stonith device for node-a + pcs_stonith_level: + level: '1' + node_name: 'node-a' + stonith_device: 'fence_kdump' + +- name: remove fence-xvm level 2 stonith device from node-b + pcs_stonith_level: + level: '2' + node_name: 'node-b' + stonith_device: 'fence_xvm' + state: 'absent' +''' + +import os.path +import xml.etree.ElementTree as ET +from distutils.spawn import find_executable + +from ansible.module_utils.basic import AnsibleModule + + +def run_module(): + module = AnsibleModule( + argument_spec=dict( + state=dict(default="present", choices=['present', 'absent']), + level=dict(required=True, type='int', choices=[1, 2, 3, 4, 5, 6, 7, 8, 9]), + node_name=dict(required=True, type='str'), + stonith_device=dict(required=True, type='str'), + cib_file=dict(required=False), + ), + supports_check_mode=True + ) + + state = module.params['state'] + level = module.params['level'] + node_name = module.params['node_name'] + stonith_device = module.params['stonith_device'] + cib_file = module.params['cib_file'] + + result = {} + + if find_executable('pcs') is None: + module.fail_json(msg="'pcs' executable not found. Install 'pcs'.") + + module.params['cib_file_param'] = '' + if cib_file is not None: + # use cib_file if specified + if os.path.isfile(cib_file): + try: + current_cib = ET.parse(cib_file) + except Exception as e: + module.fail_json(msg="Error encountered parsing the cib_file - %s" % (e)) + current_cib_root = current_cib.getroot() + module.params['cib_file_param'] = '-f ' + cib_file + else: + module.fail_json(msg="%(cib_file)s is not a file or doesn't exists" % module.params) + else: + # get running cluster configuration + rc, out, err = module.run_command('pcs cluster cib') + if rc == 0: + current_cib_root = ET.fromstring(out) + else: + module.fail_json(msg='Failed to load cluster configuration', out=out, error=err) + + # try to find the fencing-level + fencing_level = None + fencing_levels = current_cib_root.findall("./configuration/fencing-topology/fencing-level") + for flevel in fencing_levels: + # level must match all criteria (level, node_name, stonith_device) + if (flevel.attrib.get('index') == str(level) + and flevel.attrib.get('target') == node_name + and flevel.attrib.get('devices') == stonith_device): + fencing_level = flevel + break + + if fencing_level is not None: + result.update({ + 'fence_level_was_matched': True, + 'level': None if fencing_level is None else fencing_level.attrib.get('index'), + 'node_name': None if fencing_level is None else fencing_level.attrib.get('target'), + 'devices': None if fencing_level is None else fencing_level.attrib.get('devices'), + 'fence_level_id': None if fencing_level is None else fencing_level.attrib.get('id'), + }) + else: + result.update({'fence_level_was_matched': False}) + + # commands for creating/deleting stonith levels + cmd_create = 'pcs %(cib_file_param)s stonith level add %(level)s %(node_name)s %(stonith_device)s' % module.params + cmd_delete = 'pcs %(cib_file_param)s stonith level remove %(level)s %(node_name)s %(stonith_device)s' % module.params + + if state == 'present' and fencing_level is None: + # stonith level should be present, but we don't see it in configuration - lets create it + result['changed'] = True + if not module.check_mode: + rc, out, err = module.run_command(cmd_create) + if rc == 0: + module.exit_json(**result) + else: + module.fail_json(msg="Failed to create stonith level with cmd: '" + cmd_create + "'", output=out, error=err) + + elif state == 'present' and fencing_level is not None: + # stonith level should be present and it is there, nothing to do + result['changed'] = False + + elif state == 'absent' and fencing_level is not None: + # stonith level should not be present but we have found something - lets remove that + result['changed'] = True + if not module.check_mode: + rc, out, err = module.run_command(cmd_delete) + if rc == 0: + module.exit_json(**result) + else: + module.fail_json(msg="Failed to delete stonith level with cmd: '" + cmd_delete + "'", output=out, error=err) + else: + # stonith level should not be present and is not there, nothing to do + result['changed'] = False + + # END of module + module.exit_json(**result) + + +def main(): + run_module() + + +if __name__ == '__main__': + main() diff --git a/tasks/paf.yml b/tasks/paf.yml index 60d1e1c..df96358 100644 --- a/tasks/paf.yml +++ b/tasks/paf.yml @@ -3,7 +3,7 @@ - name: select proper PAF package (centos7) set_fact: paf_pkg: 'resource-agents-paf-{{ postgres_ha_paf_version }}-1.noarch.rpm' - when: os_version == 'centos7' + when: (os_version == 'centos7' or os_version == 'centos8') - name: select proper PAF package (centos6) set_fact: @@ -22,6 +22,7 @@ yum: name: "/tmp/{{ paf_pkg }}" state: present + disable_gpg_check: True - name: apply PAF v2.2.0 fix for newest pacemaker copy: @@ -44,61 +45,52 @@ mode: 0555 when: postgres_ha_paf_geo_patch -- name: prepare DB recovery config +- name: prepare DB recovery.conf template: src=recovery.conf.pcmk.j2 dest="{{ postgres_ha_pg_data }}/../recovery.conf.{{postgres_ha_cluster_name}}.pcmk" args: owner: postgres group: postgres mode: 0644 + when: postgres_ha_pg_version | int < 12 - name: stop database for clustering service: name="{{ postgres_ha_pg_systemd_svcname }}" state=stopped enabled=false -- name: create database cluster resource - when: inventory_hostname == postgres_ha_cluster_master_host # run only on one node - pcs_resource: command=create resource_id="{{ postgres_ha_cluster_pg_res_name }}" type=ocf:heartbeat:pgsqlms - args: - disabled: True - options: - bindir: "{{ postgres_ha_pg_bindir }}" - pgdata: "{{ postgres_ha_pg_data }}" - pgport: "{{ postgres_ha_pg_port }}" - recovery_template: "{{ postgres_ha_pg_data }}/../recovery.conf.{{postgres_ha_cluster_name}}.pcmk" - operations: - - action: start - options: - timeout: 60s - - action: stop - options: - timeout: 60s - - action: promote - options: - timeout: 30s - - action: demote - options: - timeout: 120s - - action: notify - options: - timeout: 60s - - action: monitor - options: - interval: "{{ postgres_ha_monitor_interval_pgmaster }}" - timeout: 10s - role: Master - - action: monitor - options: - interval: "{{ postgres_ha_monitor_interval_pgslave }}" - timeout: 10s - role: Slave +- name: remove primary_conninfo from postgresql.auto.conf + lineinfile: + dest: "{{ postgres_ha_pg_data }}/postgresql.auto.conf" + regexp: "^primary_conninfo =" + state: absent + ignore_errors: True -- name: create master DB resource +# 'force_resource_update' is commented out because it might trigger database restart after role re-run +- name: create database cluster resource when: inventory_hostname == postgres_ha_cluster_master_host # run only on one node - pcs_resource: command=master resource_id="{{ postgres_ha_cluster_pg_HA_res_name }}" ms_name="{{ postgres_ha_cluster_pg_res_name }}" disabled=True - args: - options: - master-max : 1 - master-node-max : 1 - clone-max : "{{ ansible_play_batch|length }}" - clone-node-max : 1 - notify : true + pcs_resource: + name: "{{ postgres_ha_cluster_pg_HA_res_name }}" # master resource name + child_name: "{{ postgres_ha_cluster_pg_res_name }}" # slave resource name + resource_class: '{% if ansible_distribution_major_version | int >= 8 %}promotable{% else %}master{% endif %}' + resource_type: ocf:heartbeat:pgsqlms + #force_resource_update: true + options: > + {% if db_resource_exists is not succeeded %}--disabled{% endif %} + bindir="{{ postgres_ha_pg_bindir }}" + pgdata="{{ postgres_ha_pg_data }}" + pgport="{{ postgres_ha_pg_port }}" + {% if postgres_ha_pg_version | int < 12 %} + recovery_template="{{ postgres_ha_pg_data }}/../recovery.conf.{{postgres_ha_cluster_name}}.pcmk" + {% endif %} + '{% if ansible_distribution_major_version | int >= 8 %}promotable{% else %}master{% endif %}' + master-max=1 + master-node-max=1 + clone-max="{{ ansible_play_batch|length }}" + clone-node-max=1 + notify=true + op start timeout=60s + op stop timeout=60s + op promote timeout=30s + op demote timeout=120s + op notify timeout=60s + op monitor interval="{{ postgres_ha_monitor_interval_pgmaster }}" timeout=10s role="Master" + op monitor interval="{{ postgres_ha_monitor_interval_pgslave }}" timeout=10s role="Slave" diff --git a/tasks/pcs.yml b/tasks/pcs.yml index b85ec9a..0c738c1 100644 --- a/tasks/pcs.yml +++ b/tasks/pcs.yml @@ -3,6 +3,12 @@ - debug: msg='cluster_members={{ansible_play_batch}}' run_once: true +- name: enable HighAvailability dnf stream + command: dnf config-manager --set-enabled HighAvailability + args: + warn: false + when: os_version == 'centos8' + - name: install cluster pkgs yum: name: pcs @@ -59,17 +65,19 @@ password: "{{ postgres_ha_cluster_ha_password_hash }}" - name: setup cluster auth - shell: pcs cluster auth {{ ansible_play_batch | join( " ") }} -u hacluster -p "{{ postgres_ha_cluster_ha_password }}" + shell: pcs "{% if os_version == 'centos8' %}host{% else %}cluster{% endif %}" auth {{ ansible_play_batch | join( " ") }} -u hacluster -p "{{ postgres_ha_cluster_ha_password }}" + retries: 15 + delay: 2 # We create cluster in two steps: # 1. create one-node cluster # 2. join other cluster nodes (the task below) # The reason is that we want to support adding new nodes by re-running the role. -- name: create cluster (centos7) - shell: pcs cluster setup --name {{ postgres_ha_cluster_name }} "{{ pcs_hostname }}" {% if postgres_ha_pcs_advanced_params %}{% for param in postgres_ha_pcs_advanced_params|difference(['addr0', 'addr1', 'addr2', 'addr3', 'transport']) %}--{{ param }} {{ postgres_ha_pcs_advanced_params[param] }} {% endfor %}{% endif %} {% if postgres_ha_mcast_enable %}--transport udp {{ pcs_ring_addrs }}{% endif %} +- name: create cluster (centos7/8) + shell: pcs cluster setup {% if os_version == 'centos7' %}--name{% else %}--start{% endif %} {{ postgres_ha_cluster_name }} "{{ pcs_hostname }}" {% if postgres_ha_pcs_advanced_params %}{% for param in postgres_ha_pcs_advanced_params|difference(['addr0', 'addr1', 'addr2', 'addr3', 'transport']) %}--{{ param }} {{ postgres_ha_pcs_advanced_params[param] }} {% endfor %}{% endif %} {% if postgres_ha_mcast_enable %}--transport udp {{ pcs_ring_addrs }}{% endif %} args: creates: /etc/corosync/corosync.conf - when: os_version == 'centos7' and + when: (os_version == 'centos7' or os_version == 'centos8') and inventory_hostname == postgres_ha_cluster_master_host # run only on master node # ignore these parameters from postgres_ha_pcs_advanced_params: 'addr0', 'addr1', 'addr2', 'addr3', 'transport' @@ -80,10 +88,10 @@ when: os_version == 'centos6' and inventory_hostname == postgres_ha_cluster_master_host # run only on master node -- name: join cluster nodes (centos7) +- name: join cluster nodes (centos7/8) shell: /bin/sh -c "if ! grep -q 'ring0_addr[:] *{{ item }}[\t ]*$' /etc/corosync/corosync.conf; then pcs cluster node add {{ hostvars[item]['pcs_hostname'] }}; fi" with_items: '{{ ansible_play_batch | difference([inventory_hostname]) }}' # all hosts except me - when: os_version == 'centos7' and + when: (os_version == 'centos7' or os_version == 'centos8') and inventory_hostname == postgres_ha_cluster_master_host # run only on master node - name: join cluster nodes (centos6) @@ -117,14 +125,21 @@ - name: alter cluster transition settings pcs_property: name=crmd-transition-delay value=3s run_once: true + when: (os_version == 'centos6' or os_version == 'centos7') + +#- name: alter cluster migration-threshold settings +# pcs_resource_defaults: name=migration-threshold value=5 +# run_once: true +# when: os_version == 'centos8' - name: verify cluster configuration shell: crm_verify -L -V run_once: true + changed_when: false - name: enable cluster autostart shell: pcs cluster enable -# reload corosync if neccessary (done automatically on the end of the tasklist) -#- meta: flush_handlers +# reload corosync if neccessary +- meta: flush_handlers diff --git a/tasks/postgresql_sync.yml b/tasks/postgresql_sync.yml index ffcf661..f77a1d0 100644 --- a/tasks/postgresql_sync.yml +++ b/tasks/postgresql_sync.yml @@ -1,35 +1,22 @@ # vim: set filetype=yaml expandtab tabstop=2 shiftwidth=2 softtabstop=2 background=dark : -# The name of the rpm file that imports the pg repo depends on the OS family and on the pg version. -# This variable sets the last version digit of the repo file (e.g 9.6-3). -- name: set pg repo rpm version suffix (v9.x) - set_fact: - pg_pkg_vers_suffix: '3' - -- name: set pg repo rpm version suffix for (v10+) - set_fact: - pg_pkg_vers_suffix: '2' - when: postgres_ha_pg_version >= 10 - -- name: determine the correct postgres package name (all systems) - set_fact: - pg_pkg_name: 'pgdg-centos{{ postgres_ha_pg_version | replace(".", "") }}-{{ postgres_ha_pg_version }}-{{ pg_pkg_vers_suffix }}.noarch.rpm' - #when: ansible_distribution == 'CentOS' # this is default - -- name: determine the correct postgres package name (RHEL) - set_fact: - pg_pkg_name: 'pgdg-redhat{{ postgres_ha_pg_version | replace(".", "") }}-{{ postgres_ha_pg_version }}-{{ pg_pkg_vers_suffix }}.noarch.rpm' - when: ansible_distribution == 'Red Hat Enterprise Linux' +- name: disable dnf postgres module + command: dnf -qy module disable postgresql + args: + warn: false + when: os_version == 'centos8' - name: 'import pg{{ postgres_ha_pg_version | replace(".", "") }} repo' yum: name: "{{ postgres_ha_repo_url }}" state: installed + disable_gpg_check: True when: postgres_ha_import_repo - name: 'install pg{{ postgres_ha_pg_version | replace(".", "") }}' yum: - name: 'postgresql{{ postgres_ha_pg_version | replace(".", "") }}-server, postgresql{{ postgres_ha_pg_version | replace(".", "") }}-contrib, python-psycopg2' + name: 'postgresql{{ postgres_ha_pg_version | replace(".", "") }}-server, postgresql{{ postgres_ha_pg_version | replace(".", "") }}-contrib, python{% if ansible_distribution_major_version | int >= 8 %}3{% endif %}-psycopg2' + # purposely omited ansible_os_family == "RedHat" to simplify this task ^^ state: installed - name: init DB dir on master if necessary (centos 7 and postgresql 9.6 or older) @@ -38,7 +25,7 @@ creates: "{{ postgres_ha_pg_data }}/PG_VERSION" # run only on one node when: inventory_hostname == postgres_ha_cluster_master_host - and os_version == 'centos7' + and (os_version == 'centos7' or os_version == 'centos8') and postgres_ha_pg_version |int < 10 - name: init DB dir on master if necessary (centos 7 and postgresql 10 or above) @@ -47,7 +34,7 @@ creates: "{{ postgres_ha_pg_data }}/PG_VERSION" # run only on one node when: inventory_hostname == postgres_ha_cluster_master_host - and os_version == 'centos7' + and (os_version == 'centos7' or os_version == 'centos8') and postgres_ha_pg_version |int >= 10 - name: init DB dir on master if necessary (centos 6) @@ -72,7 +59,7 @@ # mode: 0600 - name: alter clustering-related settings in postgresql.conf - replace: + replace: dest="{{ postgres_ha_pg_data }}/postgresql.conf" regexp="^([# ]*{{ item.key }} *=.*$)" replace="{{ item.key }} = {{ item.value }}" @@ -80,6 +67,18 @@ with_dict: "{{ postgres_ha_postgresql_conf_vars }}" notify: restart postgresql +- name: alter clustering-related settings in postgresql.conf (pg12+) + replace: + dest="{{ postgres_ha_pg_data }}/postgresql.conf" + regexp="^([# ]*{{ item.key }} *=.*$)" + replace="{{ item.key }} = {{ item.value }}" + with_dict: "{{ postgres_ha_postgresql_conf_vars_12 }}" + when: postgres_ha_pg_version | int >= 12 and + (inventory_hostname == postgres_ha_cluster_master_host or + db_prevsync_file.stat.exists) + # run on master and on already-synchronized nodes + notify: restart postgresql + - meta: flush_handlers - name: alter DB ACL in pg_hba.conf @@ -185,7 +184,7 @@ # if DB is clustered and is not running, we have a problem.. try at least cleaning the resource status - name: start master DB if necessary (in cluster) - shell: pcs resource cleanup "{{ postgres_ha_cluster_pg_HA_res_name }}" && sleep 15 + shell: pcs resource manage "{{ postgres_ha_cluster_pg_HA_res_name }}" && pcs resource clear "{{ postgres_ha_cluster_pg_HA_res_name }}" && pcs resource refresh "{{ postgres_ha_cluster_pg_HA_res_name }}" && pcs resource enable "{{ postgres_ha_cluster_pg_HA_res_name }}" && sleep 20 when: (inventory_hostname == postgres_ha_cluster_master_host) and (db_resource_exists is succeeded) and (db_running is failed) @@ -239,6 +238,16 @@ # (datadir_files.matched|int == 0) register: slave_resync +- name: reapply clustering-related settings in postgresql.conf (pg12+) + replace: + dest="{{ postgres_ha_pg_data }}/postgresql.conf" + regexp="^([# ]*{{ item.key }} *=.*$)" + replace="{{ item.key }} = {{ item.value }}" + with_dict: "{{ postgres_ha_postgresql_conf_vars_12 }}" + when: postgres_ha_pg_version | int >= 12 and + inventory_hostname != postgres_ha_cluster_master_host + # run on slaves + - name: forbid self-replication in pg_hba.conf on slaves lineinfile: dest="{{ postgres_ha_pg_data }}/pg_hba.conf" regexp='^host replication .*{{ hostvars[item].ansible_default_ipv4.address }}/32' diff --git a/tasks/vip.yml b/tasks/vip.yml index b6eb464..30a4408 100644 --- a/tasks/vip.yml +++ b/tasks/vip.yml @@ -2,14 +2,12 @@ - name: create virtual IP resource when: inventory_hostname == postgres_ha_cluster_master_host # run only on one node - pcs_resource: command=create resource_id="{{ postgres_ha_cluster_vip_res_name }}" type=ocf:heartbeat:IPaddr2 - args: - options: - ip: "{{ postgres_ha_cluster_vip }}" - cidr_netmask: "{{ postgres_ha_cluster_vip_mask }}" - operations: - - action: monitor - options: - interval: 10s + pcs_resource: + name: "{{ postgres_ha_cluster_vip_res_name }}" + resource_type: ocf:heartbeat:IPaddr2 + options: > + ip="{{ postgres_ha_cluster_vip }}" + cidr_netmask="{{ postgres_ha_cluster_vip_mask }}" + op monitor interval=10s