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I'm running Ubuntu Server 18.04, Docker 19.03.12, and Compose 1.25.0.

I run several applications through my Docker compose file (example below). Recently, some containers (mainly Jackett but once Deluge) will completely disappear, they don't show with docker ps -a, and I can't access their logs because the container doesn't exist.

I don't really know how to go about diagnosing this because there doesn't seem to be any trail to follow.

Jackett service entry

  jackett:
    image: linuxserver/jackett
    container_name: jackett
    restart: unless-stopped
    network_mode: service:vpn

    # depends_on:
    #   - vpn

    volumes:
      - ${DOCKER_STORAGE}/jackett/config:/config

    environment:
      - PUID=${PUID}
      - PGID=${PGID}

    # networks:
    #   - traefik_proxy

    labels:
      - "traefik.enable=true"
    
      ## HTTP Routers
      - "traefik.http.routers.jackett.entryPoints=https"
      - "traefik.http.routers.jackett.rule=Host(`jackett.$DOMAINNAME`)"
      - "traefik.http.routers.jackett.tls=true"
    
      ## HTTP Services
      - "traefik.http.routers.jackett.service=jackett"
      - "traefik.http.services.jackett.loadbalancer.server.port=9117"
    
      ## Middlewares
      - "traefik.http.routers.jackett.middlewares=chain-auth@file"

Answers

It turns out the issue appears to be Ouroboros. I was thinking what would have access to starting and stopping docker containers, and I had a look in the Ouroboros logs and found this:

2020-08-12 07:18:44 : INFO : dockerclient : jackett will be updated
2020-08-12 07:18:48 : ERROR : base : Job "Interval container update for unix://var/run/docker.sock (trigger: interval[0:05:00], next run at: 2020-08-12 07:23:01 UTC)" raised an exception
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/docker/api/client.py", line 261, in _raise_for_status
    response.raise_for_status()
  File "/usr/local/lib/python3.7/site-packages/requests/models.py", line 940, in raise_for_status
    raise HTTPError(http_error_msg, response=self)
requests.exceptions.HTTPError: 400 Client Error: Bad Request for url: http+docker://localhost/v1.35/containers/create?name=jackett

This looks like the problem to me