Docker: Backing up Confluence with Postgres

[MG]

Hello,

I am having a hard time backing up Confluence & Postgres.

I am using docker-compose to startup a PostgresDB and afterwards Confluence.

This is from the docker-compose-file:

db_confluence:    
    image: postgres:9.6.15-alpine    
    container_name: db_confluence   
    volumes: 
        - confluence_db_volume:/var/lib/postgresql/data    
    environment:      
        - POSTGRES_PASSWORD:${PW_CONFLUENCE}
    restart: unless-stopped

confluence:
    image: atlassian/confluence-server:latest
    container_name: confluence
    volumes:
        #- confluence_config:/opt/atlassian/confluence/conf
        - confluence_home_data:/var/atlassian/application-data/confluence
    depends_on:
        - db_confluence
    ports:
        - 8090:8090
    restart: unless-stopped


volumes:
    confluence_db_volume:
        external: false
    confluence_home_data:
        external: false  
    #confluence_config:
        #external: false

The original idea:

• Start up the containers with docker-compose up -d
• Initialize Confluence (enter License, connect to Postgres, create a user, create a dummy page)
• Stop the containers (Confluence & Postgres)
• Backup the Docker-Volumes (with the help of https://github.com/loomchild/volume-backup)
• Remove the stopped Containers
• Remove the dangling Volumes
• Restore the Docker-Volumes (with the help of https://github.com/loomchild/volume-backup)
• Recreate the containers with docker-compose up -d

-> NOT working at all :-( 

Then I thought maybe I need to backup "/opt/atlassian/confluence/conf" from the Confluence-container in a Docker-Volume as well -> Not working, again. Server doesn't even startup anymore (restarting (1)).

The last thing i tried desperatly:

After removing the volumes from the docker-compose-file and setting up Confluence I stopped the containers to back them up completely

 docker commit -p confluence confluence_backup

After spinning them up again, Confluence wasn't initialized and I had to start again.

Anyone experienced the same and can help me to properly backup & restore a running Confluence instance with Postgres?

[Dave Chevell]

You should only need to back up & restore the contents of $CONFLUENCE_HOME, i.e. /var/atlassian/application-data/confluence

All other configuration (i.e. server.xml / Tomcat) should be coming from the environment (documented on https://hub.docker.com/r/atlassian/confluence-server )

What exactly happens when you do this - what errors do you get, what appears in the log?

[MG]

I did solve this problem by now.

Turns out that while restoring the volume with "https://github.com/loomchild/volume-backup" another _data-Folder into the recreated Volume (with the original contents in it) was added.

So I had to move the data in the recreated volume one directory up - et voila, the backup-restore process worked fine :-)

Thanks for your help though!