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[Help] Backing up Nextcloud with Duplicati (Docker) (self.selfhosted)

submitted 1 year ago by avnrt to c/selfhosted

16 comments fedilink hide all child comments

I would like to back up my nextcloud data using duplicati, but I absolutely can‘t figure out how to give Duplicati access to the Nextcloud volume. Both are running fine in separate Docker containers. I can’t figure out how to properly mount the volume, below is my current compose for duplicati. Do I need to mount the volume as source? Does it need to be declared or mapped separately?

***
version: "2.1"
services:
  duplicati:
    image: lscr.io/linuxserver/duplicati:latest
    container_name: duplicati
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=XXX
      - CLI_ARGS= #optional
    volumes:
      - /path/to/appdata/config:/config
      - /path/to/backups:/backups
      - /path/to/source:/var/lib/docker/volumes/073ac2751cd65ffd84750e578c38482905c3c7e4851a8cbb0bbbc5c33a285e84
    ports:
      - 8200:8200
    restart: unless-stopped

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[–] [email protected] 1 points 1 year ago (1 children)

I just went through dockerizing my nextcloud installation. The www-data user on my host had uid 33, but the one inside the container uses uid 82, which had me scratching my head for a minute. You can confirm the actual uid by running id www-data inside the nextcloud container.

[–] [email protected] 1 points 1 year ago* (last edited 1 year ago) (1 children)

I have two instances on two separate servers running and all of them use uid:gid 33:33 inside the container. I use the nextcloud:26-apache docker image.

Edit: I think your container image is based on Alpine linux, which use uid 82 for its www-data user. Try switching to a debian-based image (e.g. the apache version) if you want it to match with your host system.

[–] [email protected] 1 points 1 year ago

Ah yep I bet that’s it, I’m using the alpine fpm image.