added mariadb dump to backup

podman/files/mysql-dump.service.jinja

@@ -0,0 +1,12 @@
+{%- set user = salt['pillar.get']('podman:user', 'root') %}
+{%- set home = salt['user.info'](user).home %}
+[Unit]
+Description=Dump all mariadb databases
+
+[Service]
+Type=oneshot
+User={{ user }}
+ExecStart={{ home }}/bin/mysql-dump.sh
+
+[Install]
+WantedBy=default.target

podman/files/mysql-dump.sh.jinja

@@ -0,0 +1,15 @@
+#!/bin/bash
+umask 0077
+BACKUP_DIR={{ pillar.containers.mariadb.backup_dir }}
+databases=$(podman exec -it mariadb mysql -B -u root -p{{ pillar.containers.mariadb.env.MYSQL_ROOT_PASSWORD }} -e "SHOW DATABASES;" | tr -d "| " | grep -v Database)
+
+for db in ${databases[@]}; do
+    db=${db::-1}
+    if [[ "$db" != "information_schema" ]] && [[ "$db" != "performance_schema" ]] && [[ "$db" != "mysql" ]] && [[ "$db" != _* ]] && [[ "$db" != "sys" ]]; then
+        echo "Dumping database: $db"
+        podman exec -it mariadb mysqldump -u root -p{{ pillar.containers.mariadb.env.MYSQL_ROOT_PASSWORD }} --databases $db | gzip > ${BACKUP_DIR}/$(date +"%Y-%m-%d_%H-%M-%S")_$db-sql.gz
+    fi
+done
+# Delete the files older than 3 days
+find $BACKUP_DIR/* -type d -name *-sql.gz -mtime +3 -exec rm {} \;
+

podman/files/mysql-dump.timer.jinja

@@ -0,0 +1,9 @@
+[Unit]
+Description=Restic backup timer
+
+[Timer]
+OnCalendar={{ pillar.containers.mariadb.OnCalendar }}
+Unit=restic-backup.service
+
+[Install]
+WantedBy=timers.target