variant: flatcar
version: 1.0.0

# Dozzle log viewer hub.
#
# Aggregates container logs from the dozzle agents running on the other Flatcar
# VMs (see butane/oswl_connector.yaml.tftpl) and, via the local socket, from
# this host's own containers. Reachable at http://192.168.7.63:8080.
#
# No state is kept on disk: /data is a tmpfs, so the container is fully
# disposable and there is nothing to back up. That is also why simple auth
# (users.yml) is not used -- it would need a persistent /data.
#
# Hub <-> agent traffic is TLS, using the certificate pair baked into the
# dozzle image. Every hub and agent on the same image version shares it, so
# nothing needs mounting here. To move to a custom pair later, generate one
# with (do not run as root, writes into $PWD):
#
#   docker run --rm -v "$PWD":/out amir20/dozzle:v11.1.1 generate-certs \
#     --cert-out /out/dozzle_cert.pem --key-out /out/dozzle_key.pem
#
# ...then mount it at /dozzle_cert.pem and /dozzle_key.pem (read-only) on the
# hub and on every agent. Keep the key out of this file: it would end up in
# plaintext in the rendered Ignition snippet on the node's storage.

systemd:
  units:
    - name: dozzle.service
      enabled: true
      contents: |
        [Unit]
        Description=Dozzle log viewer hub
        After=docker.service
        Requires=docker.service
        [Service]
        TimeoutStartSec=0
        # Pulled up front so a slow first pull is not mistaken for a hung unit.
        ExecStartPre=/usr/bin/docker pull amir20/dozzle:v11.1.1
        # Leading "-" so a missing container is not a failure.
        ExecStartPre=-/usr/bin/docker rm --force dozzle
        # Foreground (no -d) so systemd supervises the container process.
        ExecStart=/usr/bin/docker run --rm --name dozzle \
          -v /var/run/docker.sock:/var/run/docker.sock:ro \
          --tmpfs /data \
          -p 8080:8080 \
          -e "DOZZLE_HOSTNAME=Oswald Logs" \
          -e "DOZZLE_REMOTE_AGENT=192.168.7.60:7007|oswald-runner|Infra,192.168.7.61:7007|ai|Infra,192.168.7.62:7007|oswl-connector|Infra" \
          amir20/dozzle:v11.1.1
        ExecStop=/usr/bin/docker stop dozzle
        Restart=always
        RestartSec=5s
        [Install]
        WantedBy=multi-user.target