From 8bed51d2435aafdf6c9bc01004c46b12ee6d0472 Mon Sep 17 00:00:00 2001
From: Sander Apweiler <sa.apweiler@fz-juelich.de>
Date: Wed, 12 Feb 2020 10:41:06 +0100
Subject: [PATCH 1/2] Add container for creating regular DB dumps

---
 backup/Dockerfile     | 19 +++++++++++++++++++
 backup/crontab        |  1 +
 backup/pgsqlbackup.sh | 30 ++++++++++++++++++++++++++++++
 docker-compose.yml    |  9 +++++++++
 4 files changed, 59 insertions(+)
 create mode 100644 backup/Dockerfile
 create mode 100644 backup/crontab
 create mode 100644 backup/pgsqlbackup.sh

diff --git a/backup/Dockerfile b/backup/Dockerfile
new file mode 100644
index 0000000..5839205
--- /dev/null
+++ b/backup/Dockerfile
@@ -0,0 +1,19 @@
+FROM alpine
+
+RUN apk add postgresql-client
+RUN apk add dcron
+
+COPY pgsqlbackup.sh /usr/local/bin/pgsqlbackup.sh
+
+ENV DB_NAME="b2share"
+ENV DB_HOST="postgres"
+ENV DB_PORT="5432"
+
+# Create cron job
+COPY crontab /etc/cron.d/pgsqlbackup-cron
+RUN chmod 0644 /etc/cron.d/pgsqlbackup-cron
+
+RUN touch /test.txt
+
+CMD crond -s /etc/cron.d -b && tail -f /test.txt
+
diff --git a/backup/crontab b/backup/crontab
new file mode 100644
index 0000000..5429279
--- /dev/null
+++ b/backup/crontab
@@ -0,0 +1 @@
+0 1 * * * /bin/sh /usr/local/bin/pgsqlbackup.sh 2>&1
diff --git a/backup/pgsqlbackup.sh b/backup/pgsqlbackup.sh
new file mode 100644
index 0000000..143f5b7
--- /dev/null
+++ b/backup/pgsqlbackup.sh
@@ -0,0 +1,30 @@
+#!/bin/bash
+#
+# PostgreSQL Backup Script
+#  Dumps postgresql databases to a file for another backup tool to pick up.
+#
+
+PATH=/usr/bin:/usr/sbin:/bin:/sbin
+IFS=' '
+
+##### START CONFIG ###################################################
+
+DBHOST=$DB_HOST
+DBPORT=$DB_PORT
+DBNAME=$DB_NAME
+DBUSER=$POSTGRES_USER
+
+DIR=/usr/local/share/pgsql_dumps
+
+# Ensure backup directory exist.
+if [ ! -d "${DIR}" ]; then
+    /bin/mkdir -p ${DIR}
+fi
+
+PREFIX=pgsql_backup_
+
+##### STOP CONFIG ####################################################
+FILE="${DIR}/${PREFIX}${DBNAME}_`date +%Y%m%d-%H%M%S`.sql"
+COMMAND="/usr/bin/pg_dump --file=${FILE} --blobs --dbname=${DBNAME} --host=${DBHOST} --port=${DBPORT} --username=${DBUSER}"
+/bin/echo ${COMMAND} >> /test.txt
+/usr/bin/pg_dump --file=${FILE} --blobs --dbname=${DBNAME} --host=${DBHOST} --port=${DBPORT} --username=${DBUSER}
diff --git a/docker-compose.yml b/docker-compose.yml
index d53cf99..80b9506 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -75,3 +75,12 @@ services:
             - "5672"
         volumes:
             - "${B2SHARE_DATADIR}/rabbitmq-data:/var/lib/rabbitmq"
+
+    backup:
+        build: backup
+        environment:
+            - "PGPASSWORD=${B2SHARE_POSTGRESQL_PASSWORD}"
+            - "POSTGRES_USER=${B2SHARE_POSTGRESQL_USER}"
+        volumes:
+            - "${B2SHARE_DATADIR}/db_dump:/usr/local/share/pgsql_dumps"
+

From 8170124b6a5b9c9363855f5815343cc12dddbf36 Mon Sep 17 00:00:00 2001
From: Sander Apweiler <sa.apweiler@fz-juelich.de>
Date: Thu, 24 Jun 2021 09:01:32 +0200
Subject: [PATCH 2/2] Add automized deletion of old database dumps

---
 backup/Dockerfile        | 2 ++
 backup/crontab           | 1 +
 backup/drop_old_dumps.sh | 6 ++++++
 docker-compose.yml       | 1 +
 4 files changed, 10 insertions(+)
 create mode 100644 backup/drop_old_dumps.sh

diff --git a/backup/Dockerfile b/backup/Dockerfile
index 5839205..d275a30 100644
--- a/backup/Dockerfile
+++ b/backup/Dockerfile
@@ -4,10 +4,12 @@ RUN apk add postgresql-client
 RUN apk add dcron
 
 COPY pgsqlbackup.sh /usr/local/bin/pgsqlbackup.sh
+COPY drop_old_dumps.sh /usr/local/bin/drop_old_dumps.sh
 
 ENV DB_NAME="b2share"
 ENV DB_HOST="postgres"
 ENV DB_PORT="5432"
+ENV NUMBER_OF_DUMPS="30"
 
 # Create cron job
 COPY crontab /etc/cron.d/pgsqlbackup-cron
diff --git a/backup/crontab b/backup/crontab
index 5429279..2e173b7 100644
--- a/backup/crontab
+++ b/backup/crontab
@@ -1 +1,2 @@
 0 1 * * * /bin/sh /usr/local/bin/pgsqlbackup.sh 2>&1
+0 2 * * * /bin/sh /usr/local/bin/drop_old_dumps.sh 2>&1
diff --git a/backup/drop_old_dumps.sh b/backup/drop_old_dumps.sh
new file mode 100644
index 0000000..edda268
--- /dev/null
+++ b/backup/drop_old_dumps.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+#
+# Drop old database dumps.
+
+/usr/bin/find /usr/local/share/pgsql_dumps -type f -mtime +${NUMBER_OF_DUMPS} -delete
+
diff --git a/docker-compose.yml b/docker-compose.yml
index 6ae73ae..e18e3f3 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -112,6 +112,7 @@ services:
     #     environment:
     #         - "PGPASSWORD=${B2SHARE_POSTGRESQL_PASSWORD}"
     #         - "POSTGRES_USER=${B2SHARE_POSTGRESQL_USER}"
+    #         - "NUMBER_OF_DUMPS=30"
     #     volumes:
     #         - "${B2SHARE_DATADIR}/db_dump:/usr/local/share/pgsql_dumps"