[SOLVED] Health Check Failing when service port exposed

Traefik Traefik v2
1

I am using traefik v2.3.5 with docker swarm.
Here is my provider:

[providers]
    [providers.docker]
        watch = true
        swarmMode = true
        exposedbydefault = false

And this is my app service:

services:
  app-backend:
    networks:
      - local-overlay
    ports:
      - "8082:8082"
    deploy:
      mode: global
      labels:
        - "traefik.enable=true"
        - "traefik.http.routers.app.rule=PathPrefix(`/test`)"
        - "traefik.http.routers.app.entrypoints=app"
        #
        - "traefik.http.services.app.loadbalancer.server.port=8082"
        - "traefik.http.services.app.loadbalancer.healthcheck.path=/hc"
        - "traefik.http.services.app.loadbalancer.healthcheck.interval=2s"
        - "traefik.http.services.app.loadbalancer.healthcheck.timeout=1s"

I get this from log:

{"level":"warning","msg":"Health check still failing. Backend: \"app@docker\" URL: \"http://10.0.0.48:8082\" Reason: HTTP request failed: Get \"http://10.0.0.48:8082/hc\": net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)","time":"2021-05-04T21:56:35Z"}

image

But when I remove the ports, not expose the 8082, everything works:
image

2

Hi @Championzb

See the answer in this topoc:

3

Thank you, @cakiwi. by adding traefik.docker.network label, it works.

1 Like
4

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