wrapper backup script

sbin/vol-backup

@@ -0,0 +1,43 @@
+#!/bin/bash
+
+#
+# Run this script as root inside a service directory.
+#
+
+if [ -d "volumes" ]; then
+  # Dump mysql
+  if [ -d "volumes/mysql" ]; then
+    CONTAINER_NAME=$(echo ${PWD##*/} | sed -e 's/\.//g')_mariadb
+    DB_USER=$(nerdctl exec $CONTAINER_NAME bash -c 'echo "$MYSQL_USER"')
+    DB_PASSWORD=$(nerdctl exec $CONTAINER_NAME bash -c 'echo "$MYSQL_PASSWORD"')
+    DB_NAME=$(nerdctl exec $CONTAINER_NAME bash -c 'echo "$MYSQL_DATABASE"')
+    DUMP_NAME=$CONTAINER_NAME.sql
+    nerdctl exec -e MYSQL_PWD=$DB_PASSWORD $CONTAINER_NAME mariadb-dump -u $DB_USER $DB_NAME > volumes/$DUMP_NAME
+  fi
+
+  # Dump postgres
+  if [ -d "volumes/postgres" ]; then
+    CONTAINER_NAME=$(echo ${PWD##*/} | sed -e 's/\.//g')_postgres
+    DB_USER=$(nerdctl exec $CONTAINER_NAME bash -c 'echo "$POSTGRES_USER"')
+    DB_PASSWORD=$(nerdctl exec $CONTAINER_NAME bash -c 'echo "$POSTGRES_PASSWORD"')
+    DB_NAME=$(nerdctl exec $CONTAINER_NAME bash -c 'echo "$POSTGRES_DATABASE"')
+    DUMP_NAME=$CONTAINER_NAME.sql
+    nerdctl exec -e PGPASSWORD=$DB_PASSWORD $CONTAINER_NAME pg_dump -U $DB_USER $DB_NAME > volumes/$DUMP_NAME
+  fi
+
+  # Compress all volumes excerpt mysql and postgres
+  BACKUP=${PWD##*/}.tar.zst
+  tar --zstd -cf /tmp/$BACKUP -C volumes .
+
+  # Put it into the storage box (pubkey needed)
+  STORAGE_BOX=u442569@u442569.your-storagebox.de
+  TODAY=$(date +%F)
+  ssh -p23 $STORAGE_BOX "mkdir -p $TODAY"
+  scp -P 23 /tmp/$BACKUP $STORAGE_BOX:/home/$TODAY
+
+  # Clean
+  if [ -f "volumes/$DUMP_NAME" ]; then
+    rm volumes/$DUMP_NAME
+  fi
+  rm /tmp/$BACKUP
+fi