Add backup and restore functionality as discussed in Cloud Seminar #15 2023

db/Dockerfile

@@ -0,0 +1,19 @@
+FROM mariadb:10.5.12
+
+ENV MYSQL_ROOT_PASSWORD=secret
+ENV MYSQL_USER=username
+ENV MYSQL_PASSWORD=password
+ENV MYSQL_DATABASE=wordpress
+
+COPY dump.sh /usr/local/bin/dump.sh
+COPY restore.sh /usr/local/bin/restore.sh
+COPY bro.cnf /home
+
+# Install cron
+RUN apt-get update && apt-get install -y cron
+
+RUN chmod +x /usr/local/bin/dump.sh
+RUN chmod +x /usr/local/bin/restore.sh
+
+RUN echo "0 2 * * * /usr/local/bin/dump.sh" | crontab -
+RUN echo "30 3 * * 6 /usr/local/bin/backup.sh" | crontab -

db/backup.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+# Run mysqlbackup command
+mariabackup --defaults-extra-file=/home/bro.cnf \
+   --backup \
+   --target-dir=/etc/mysql/conf.d/backup/

db/bro.cnf

@@ -0,0 +1,11 @@
+[mysqldump]             # NEEDED FOR DUMP
+user=username
+password=password
+
+[mysql]             # NEEDED FOR RESTORE
+user=username
+password=password
+
+[mariabackup]
+user=root
+password=secret

db/dump.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# Define variables
+DB_NAME="wordpress"
+
+# Set the current date for the dump file
+DATE=$(date +"%Y%m%d_%H%M%S")
+DUMP_FILE="/etc/mysql/conf.d/dumps/${DB_NAME}_dump_$DATE.sql"
+
+# Run mysqldump command
+mysqldump --defaults-extra-file=/home/bro.cnf "$DB_NAME" > "$DUMP_FILE"

db/restore.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+backup=$(ls -t1 /etc/mysql/conf.d/backups | head -n 1)
+
+if [ -z ${backup} ]; then
+    echo "No Backups found!"
+else
+    mysql --defaults-extra-file=/home/bro.cnf wordpress < /etc/mysql/conf.d/backups/${backup}
+fi

docker-compose.yml

@@ -3,3 +3,24 @@
 # and compose your stack by running
 # docker compose up -d
 ################################################################################
+
+version: "2"
+services:
+  data:
+    build: data
+
+  db:
+    build: db
+    volumes_from:
+      - data
+    volumes:
+      - ~/dockerfiles/etc/mysql/conf.d:/etc/mysql/conf.d
+
+  wp:
+    image: wordpress:5.8.1-php8.0-apache
+    ports:
+      - "80:80"
+    links:
+      - db:mysql
+    volumes:
+      - ~/dockerfiles/wp-content:/var/www/html/wp-content

docker-compose.yml-cron-backup

@@ -0,0 +1,20 @@
+version: "2"
+services:
+  data:
+    build: data
+
+  db:
+    build: db
+    volumes_from:
+      - data
+    volumes:
+      - ~/dockerfiles/etc/mysql/conf.d:/etc/mysql/conf.d
+
+  wp:
+    image: wordpress:5.8.1-php8.0-apache
+    ports:
+      - "80:80"
+    links:
+      - db:mysql
+    volumes:
+      - ~/dockerfiles/wp-content:/var/www/html/wp-content