Trouble to connect to more than one agent

[JueFri]

First of all thank you Amir for making such a great tool.

I am not able to connect to more than one agent.

On the dozzle host i am only able to connect to the first agent in the list of the DOZZLE_REMOTE_AGENT environment variable. The second one is light grey and not selectable.

Maybe someone could review my docker compose files and tell me what i make wrong.

The host docker compose yaml is:

services:
  dozzle:
    image: amir20/dozzle:latest
    container_name: dozzle
    restart: unless-stopped
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    ports:
      - 8080:8080
    environment:
      - DOZZLE_ENABLE_SHELL=true
      - DOZZLE_REMOTE_AGENT=192.168.2.46:7007, 192.168.2.53:7007

Docker log

{"level":"info","version":"v8.12.3","time":"2025-04-03T15:20:51Z","message":"Dozzle version v8.12.3"}
{"level":"warn","version":"v8.12.3","error":"rpc error: code = Unavailable desc = name resolver error: produced zero addresses","endpoint":" 192.168.2.53:7007","time":"2025-04-03T15:20:51Z","message":"error fetching host info for agent"}
{"level":"info","version":"v8.12.3","clients":2,"time":"2025-04-03T15:20:51Z","message":"Connected to Docker"}
{"level":"info","version":"v8.12.3","time":"2025-04-03T15:20:51Z","message":"Accepting connections on :8080"}
{"level":"warn","version":"v8.12.3","error":"rpc error: code = Unavailable desc = name resolver error: produced zero addresses","endpoint":" 192.168.2.53:7007","time":"2025-04-03T15:31:36Z","message":"error fetching host info for agent"}
{"level":"warn","version":"v8.12.3","error":"rpc error: code = Unavailable desc = name resolver error: produced zero addresses","time":"2025-04-03T15:31:36Z","message":"error listing containers"}
{"level":"warn","version":"v8.12.3","error":"rpc error: code = Unavailable desc = name resolver error: produced zero addresses","endpoint":" 192.168.2.53:7007","time":"2025-04-03T15:31:42Z","message":"error fetching host info for agent"}
{"level":"warn","version":"v8.12.3","error":"rpc error: code = Unavailable desc = name resolver error: produced zero addresses","time":"2025-04-03T15:31:42Z","message":"error while listing containers"}
{"level":"warn","version":"v8.12.3","error":"rpc error: code = Unavailable desc = name resolver error: produced zero addresses","endpoint":" 192.168.2.53:7007","time":"2025-04-03T15:31:47Z","message":"error fetching host info for agent"}
{"level":"warn","version":"v8.12.3","error":"rpc error: code = Unavailable desc = name resolver error: produced zero addresses","time":"2025-04-03T15:31:47Z","message":"error while listing containers"}

The agent_1 192.168.2.46 docker compose yaml is:

services:
  dozzle-agent:
    image: amir20/dozzle:latest
    container_name: dozzle_agent
    command: agent
    environment:
      - DOZZLE_HOSTNAME=ittools
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro
    ports:
      - 7007:7007

Docker log

{"level":"info","version":"v8.12.3","time":"2025-04-03T08:53:13Z","message":"Dozzle agent version v8.12.3"}
{"level":"info","version":"v8.12.3","time":"2025-04-03T08:53:13Z","message":"Agent listening on [::]:7007"}

The agent_2 192.168.2.53 docker compose yaml is:

services:
  dozzle-agent:
    image: amir20/dozzle:latest
    container_name: dozzle_agent
    command: agent
    environment:
      - DOZZLE_HOSTNAME=adguard
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro
    ports:
      - 7007:7007

Docker log

{"level":"info","version":"v8.12.3","time":"2025-04-03T08:51:07Z","message":"Dozzle agent version v8.12.3"}
{"level":"info","version":"v8.12.3","time":"2025-04-03T08:51:07Z","message":"Agent listening on [::]:7007"}

[amir20]

error fetching host info for agent means there is something wrong with your network. I have never seen error: produced zero addresses.

There is CLI to test agents so that you can easily debug.

docker run amir20/dozzle:latest agent-test 192.168.2.53:7007

Try that to make sure the connection is successful. I am afraid I won't be able to help much beyond that because there are many things that could be causing this error such VPN, firewalls, etc...

[JueFri]

Thank you yery much for your quick replay.

Running your command

docker run amir20/dozzle:latest agent-test 192.168.2.53:7007

shows

{"level":"info","version":"v8.12.3","endpoint":"192.168.2.53:7007","time":"2025-04-03T16:01:11Z","message":"Connecting to agent"}
{"level":"info","version":"v8.12.3","endpoint":"192.168.2.53:7007","version":"v8.12.3","name":"adguard","id":"14ba15fb-beb7-4026-a45b-3d16487a1409","time":"2025-04-03T16:01:11Z","message":"Successfully connected to agent"}

When i change the env variable as

DOZZLE_REMOTE_AGENT=192.168.2.53:7007, 192.168.2.46:7007

than i am able to connect to 192.168.2.53:7007 and 192.168.2.46:7007 is light grey and not selectable.

[amir20]

🤨 Is it possibly just as simple as removing the space? DOZZLE_REMOTE_AGENT=192.168.2.53:7007,192.168.2.46:7007? If so then I should really fix that.

[JueFri]

Removing the space in

DOZZLE_REMOTE_AGENT=192.168.2.53:7007,192.168.2.46:7007

is the solution.

Once again thank you very much for your quick support.

[amir20]

PR to fix this #3754