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adding_machines.md

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Adding machines

Meta variables:

  • {{project}}: name of the project
  • {{domain}}: name of the machine
  • {{image}}: name of the machine image
  • {{hostname}}: host-name of the machine
  • {{mac}}: MAC address of the machine
  • {{ip}}: IP address of the machine

Deploy with minimal image

Infrastructure

  1. Run infra/shell.sh
  2. Create a new folder infra/{{project}}
  3. Create a MAC address by running infra/mac.sh {{hostname}}
  4. Create infra/images/{{project}}.sh based on the following template and run it:
. ../lib.sh
volume-create-backing images {{image}}}.qcow2 8G minimal-base-v1.qcow2
  1. Add the following line to infra/networks/private-network.xml:
  <host mac="{{mac}}" name="{{hostname}}" ip="{{ip}}"/>
  1. Create infra/{{project}}/{{domain}}.xml based on the following template:
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="../domain.xsl"?>
<!DOCTYPE domain SYSTEM '../domain.dtd'>

<domain>
  <name>{{domain}}</name>
    <memory unit="G">1</memory>
    <vcpu>1</vcpu>
    <disk pool='images' volume='{{image}}.qcow2'/>
    <network-interface
        network='private-network' 
        mac='{{mac}}'/>
</domain>

  1. Create infra/{{project}}/inventory.txt, which should contain one domain per line.

  2. Create the domain by running: domain-create {{domain}}.xml

  3. Refresh the network by running: infra/networks/refresh.sh

Configuration

  1. Create a new folder machines/<project>
  2. Write machines/<project>/configuration.nix
  3. Add the following to ssh_config:
 Host {{hostname}}
      User root
      HostName {{hostname}}
      ProxyJump bastion
  1. Add the following to machines/deploy.sh and run it:
deploy {{hostname}} './<project>/configure.nix'
  1. After accepting the server key commit and push the known_hosts repository

Deploy with custom image

Configuration

  1. Create a new folder machines/<project>

  2. Write machines/<project>/configuration.nix

  3. Build the image by running (in the directory):

nix-build '<nixpkgs/nixos>' -A config.system.build.image -I nixos-config=configure.nix

Infrastructure

  1. Run infra/shell.sh
  2. Create a new folder infra/{{project}}
  3. Create a MAC address by running infra/mac.sh {{hostname}}
  4. Create infra/images/{{project}}.sh based on the following template and run it:
. ../lib.sh
volume-create images {{image}}-base-v1.qcow2 8G
volume-upload images {{image}}-base-v1.qcow2 '../../machines/<project>/result/nixos.qcow2'
volume-create-backing images {{image}}}.qcow2 8G {{image}}-base-v1.qcow2
  1. Add the following line to infra/networks/private-network.xml:
  <host mac="{{mac}}" name="{{hostname}}" ip="{{ip}}"/>
  1. Create infra/{{project}}/{{domain}}.xml based on the following template:
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="../domain.xsl"?>
<!DOCTYPE domain SYSTEM '../domain.dtd'>

<domain>
  <name>{{domain}}</name>
    <memory unit="G">1</memory>
    <vcpu>1</vcpu>
    <disk pool='images' volume='{{image}}.qcow2'/>
    <network-interface
        network='private-network' 
        mac='{{mac}}'/>
</domain>

  1. Create infra/{{project}}/inventory.txt, which should contain one domain per line.

  2. Create the domain by running: domain-create {{domain}}.xml

  3. Refresh the network by running: infra/networks/refresh.sh