Unable to connect to dozzle-agent on the same network

🔍 Check for existing issues

[X] Completed

How is Dozzle deployed?

Agents

📦 Dozzle version

v8.6.2

✅ Command used to run Dozzle

dozzle-agent running on machine 10.220.2.100

docker run -v /var/run/docker.sock:/var/run/docker.sock -p 7007:7007 amir20/dozzle:latest agent

dozzle running on machine 10.220.2.99

docker run -p 8080:8080 amir20/dozzle:latest --remote-agent 10.220.2.100:7007

🐛 Describe the bug / provide steps to reproduce it

dozzle-agent running on machine 10.220.2.100

{"level":"info","time":"2024-10-25T17:02:16Z","message":"Dozzle agent version v8.6.2"}
{"level":"info","time":"2024-10-25T17:02:16Z","message":"Agent listening on [::]:7007"}

dozzle running on machine 10.220.2.99 is not able to connect to the agent

{"level":"info","time":"2024-10-25T17:02:59Z","message":"Dozzle version v8.6.2"}
{"level":"warn","error":"rpc error: code = DeadlineExceeded desc = received context error while waiting for new LB policy update: context deadline exceeded","endpoint":"10.220.2.100:7007","time":"2024-10-25T17:03:02Z","message":"error fetching host info for agent"}
{"level":"fatal","time":"2024-10-25T17:03:02Z","message":"Could not connect to any Docker Engine"}

Both machines are on the same network on my corporative private cloud. The issue might be related to any firewall restriction, however I have connectivity from 10.220.2.99 to 10.220.2.100

example of commands run on 10.220.2.99 to check for connectivity.

nc -zv 10.220.2.100 7007
Ncat: Version 7.50 ( https://nmap.org/ncat )
Ncat: Connected to 10.220.2.100:7007.
Ncat: 0 bytes sent, 0 bytes received in 0.01 seconds.

curl --noproxy "*" http://10.220.2.100:7007/health    
curl: (52) Empty reply from server

Is it normal to get a curl: (52) Empty reply from server? Any clues how can I troubleshoot this?

Thank you f616

💻 Environment

Client: Docker Engine - Community
 Version:    27.0.1
 Context:    default
 Debug Mode: false
 Plugins:
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.15.1
    Path:     /usr/libexec/docker/cli-plugins/docker-buildx
  compose: Docker Compose (Docker Inc.)
    Version:  v2.28.1
    Path:     /usr/libexec/docker/cli-plugins/docker-compose

Server:
 Containers: 12
  Running: 7
  Paused: 0
  Stopped: 5
 Images: 14
 Server Version: 27.0.1
 Storage Driver: overlay2
  Backing Filesystem: xfs
  Supports d_type: true
  Using metacopy: false
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: systemd
 Cgroup Version: 2
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: ae71819c4f5e67bb4d5ae76a6b735f29cc25774e
 runc version: v1.1.13-0-g58aa920
 init version: de40ad0
 Security Options:
  apparmor
  seccomp
   Profile: builtin
  cgroupns
 Kernel Version: 5.15.0-112-generic
 Operating System: Ubuntu 22.04.4 LTS
 OSType: linux
 Architecture: x86_64
 CPUs: 8
 Total Memory: 31.58GiB
 Name: UBTPWHPT003.corporativo.pt
 ID: 4935c36b-5734-4c9b-820d-c05cfafa57bc
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 HTTP Proxy: http://proxy.xyz.mngt.local:8080
 HTTPS Proxy: http://proxy.xyz.mngt.local:8080
 No Proxy: localhost,127.0.0.1,docker-registry.example.com,.corp
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Live Restore Enabled: false

📸 If applicable, add screenshots to help explain your bug

No response

📜 If applicable, attach your Dozzle logs. You many need to enable debug mode. See https://dozzle.dev/guide/debugging.

No response

amir20 / dozzle