Traefik with go application server

docker-traefik.yaml

# Providers :- discover the services that live on your infrastructure (their IP, health, ...)
# Entrypoints :- listen for incoming traffic (ports, ...)
# Routers :- analyse the requests (host, path, headers, SSL, ...). A router is in charge of connecting incoming requests to the services that can handle them.
# Services :- forward the request to your services (load balancing, ...). The Services are responsible for configuring how to reach the actual services that will eventually handle the incoming requests.
# Middlewares :- may update the request or make decisions based on the request (authentication, rate limiting, headers, ...)


version: "3.7"

networks:
  test-network:
    external: true
    name: test-network

services:
  traefik:
    deploy:
      replicas: 1
      restart_policy:
        condition: on-failure
        delay: 5s
        max_attempts: 5
      placement:
        constraints:
          - node.hostname == gcloud1
          - node.role == manager
      labels:
        - "traefik.enable=true"
        #  here router is api and in proxy-config.toml file router is myrouter
        #- "traefik.http.routers.api.rule=Host(`traefik.example.com`) && (PathPrefix(`/api`) || PathPrefix(`/dashboard`))"
        #- "traefik.http.routers.api.service=api@internal"  # Let the dashboard access the traefik api
          #- "traefik.http.routers.api.tls.certresolver=le"
        #- "traefik.http.routers.traefik.entrypoints=web"
        #- "traefik.http.routers.traefik.middlewares=dashboard-auth"      # put your middleware name here separated by comma

        # All middlewares here
        #- "traefik.http.middlewares.dashboard-auth.basicauth.users=test:XXX" # using double $ to skip single $ else not accepted

    hostname: traefik
    image: "traefik:v2.1"
    #user: "${UID}:${GID}"

    command:
      - --providers.file.filename=/etc/traefik/proxy-config.toml # Using file for reading the config
      - --entrypoints.web.address=:5050
      - --entrypoints.websecure.address=:443
      #- --api.insecure # enabling dashboard on insecure connection
      - --api=true
      - --api.dashboard=true
      - --api.debug=true
      - --log.level=DEBUG

    volumes:
      - ./proxy-config.toml:/etc/traefik/proxy-config.toml:ro
      - ./letsencrypt/acme.json:/etc/traefik/acme/acme.json:rw

    ports:
      - target: 5050
        published: 5050
        #protocol: tcp
        mode: host
      - target: 443
        published: 443
        #protocol: tcp
        mode: host
      - target: 8080
        published: 8080
        #protocol: tcp
        mode: ingress # traefik dashboard

    networks:
      - test-network

proxy-config.toml

[http.routers]
  [http.routers.myrouter]
    rule = "Host(`bchain.mydomain.in`)"
    middlewares = ["auth"]
    service = "goserver"
    entryPoints = ["web"]

  [http.routers.api]
    rule = "Host(`traefik.mydomain.in`) && (PathPrefix(`/api`) || PathPrefix(`/dashboard`))"
    middlewares = ["auth"]
    service = "api@internal"
    entryPoints = ["websecure"]  # <-- changed to `websecure` for https else move it back to `web`

    # will route TLS requests (and ignore non tls requests)
    [http.routers.api.tls]
      certResolver = "myresolver"
      # https://docs.traefik.io/routing/routers/#domains
      [[http.routers.api.tls.domains]]
        main = "traefik.mydomain.in"

[http.middlewares]
  [http.middlewares.auth.basicAuth]
    users = ["test:XX"]


[http.services]
  [http.services.goserver.loadBalancer]
    [[http.services.goserver.loadBalancer.servers]]
      url = "http://priv_ip:8001"

#LetsEncrypt
[certificatesResolvers]
  [certificatesResolvers.myresolver]
    [certificatesResolvers.myresolver.acme]
      email = "myemail@gmail.com"
      storage = "/etc/traefik/acme/acme.json"
      caServer = "https://acme-staging-v02.api.letsencrypt.org/directory"
      #keyType = "EC384"

      # tls challenge
      [certificatesResolvers.myresolver.acme.tlsChallenge]

traefik_logs for resolver error

Orgignal domain changed to `example`
private_ip changed to `PRIVATEIP`


traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=info msg="Configuration loaded from flags."
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=info msg="Traefik version 2.1.4 built on 2020-02-06T17:10:06Z"
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Static configuration loaded {\"global\":{\"checkNewVersion\":true},\"serversTransport\":{\"maxIdleConnsPerHost\":200},\"entryPoints\":{\"web\":{\"address\":\":5050\",\"transport\":{\"lifeCycle\":{\"graceTimeOut\":10000000000},\"respondingTimeouts\":{\"idleTimeout\":180000000000}},\"forwardedHeaders\":{}},\"websecure\":{\"address\":\":443\",\"transport\":{\"lifeCycle\":{\"graceTimeOut\":10000000000},\"respondingTimeouts\":{\"idleTimeout\":180000000000}},\"forwardedHeaders\":{}}},\"providers\":{\"providersThrottleDuration\":2000000000,\"file\":{\"watch\":true,\"filename\":\"/etc/traefik/proxy-config.toml\"}},\"api\":{\"dashboard\":true,\"debug\":true},\"log\":{\"level\":\"DEBUG\",\"format\":\"common\"}}"
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=info msg="\nStats collection is disabled.\nHelp us improve Traefik by turning this feature on :)\nMore details on: https://docs.traefik.io/v2.0/contributing/data-collection/\n"
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=info msg="Starting provider aggregator.ProviderAggregator {}"
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Start TCP Server" entryPointName=web
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Start TCP Server" entryPointName=websecure
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=info msg="Starting provider *file.Provider {\"watch\":true,\"filename\":\"/etc/traefik/proxy-config.toml\"}"
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=info msg="Starting provider *traefik.Provider {}"
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Configuration received from provider file: {\"http\":{\"routers\":{\"api\":{\"entryPoints\":[\"websecure\"],\"middlewares\":[\"auth\"],\"service\":\"api@internal\",\"rule\":\"Host(`traefik.example.in`) \\u0026\\u0026 (PathPrefix(`/api`) || PathPrefix(`/dashboard`))\",\"tls\":{\"certResolver\":\"myresolver\",\"domains\":[{\"main\":\"traefik.example.in\"}]}},\"myrouter\":{\"entryPoints\":[\"web\"],\"middlewares\":[\"auth\"],\"service\":\"goserver\",\"rule\":\"Host(`bchain.example.in`)\"}},\"middlewares\":{\"auth\":{\"basicAuth\":{\"users\":[\"prayag:$apr1$dH.NJJK4$2.UTMIf8Etzu9.iTzOrME/\"]}}},\"services\":{\"goserver\":{\"loadBalancer\":{\"servers\":[{\"url\":\"http://PRIVATEIP:8001\"}],\"passHostHeader\":null}}}},\"tcp\":{},\"tls\":{}}" providerName=file
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Configuration received from provider internal: {\"http\":{\"services\":{\"api\":{},\"dashboard\":{}}},\"tcp\":{},\"tls\":{}}" providerName=internal
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Creating middleware" serviceName=goserver middlewareName=pipelining middlewareType=Pipelining entryPointName=web routerName=myrouter@file
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Creating load-balancer" routerName=myrouter@file serviceName=goserver entryPointName=web
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Creating server 0 http://PRIVATEIP:8001" serviceName=goserver entryPointName=web routerName=myrouter@file serverName=0        traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Added outgoing tracing middleware goserver" entryPointName=web routerName=myrouter@file middlewareName=tracing middlewareType=TracingForwarder
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Creating middleware" entryPointName=web routerName=myrouter@file middlewareName=auth@file middlewareType=BasicAuth
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Adding tracing to middleware" entryPointName=web routerName=myrouter@file middlewareName=auth@file
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Creating middleware" entryPointName=web middlewareName=traefik-internal-recovery middlewareType=Recovery
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Added outgoing tracing middleware api@internal" middlewareName=tracing entryPointName=websecure routerName=api@file middlewareType=TracingForwarder
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Creating middleware" middlewareType=BasicAuth entryPointName=websecure routerName=api@file middlewareName=auth@file
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Adding tracing to middleware" middlewareName=auth@file routerName=api@file entryPointName=websecure
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Creating middleware" entryPointName=websecure middlewareName=traefik-internal-recovery middlewareType=Recovery
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="No default certificate, generating one"
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=error msg="the router api@file uses a non-existent resolver: myresolver"
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Creating middleware" entryPointName=web routerName=myrouter@file serviceName=goserver middlewareName=pipelining middlewareType=Pipelining
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Creating load-balancer" serviceName=goserver entryPointName=web routerName=myrouter@file
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Creating server 0 http://PRIVATEIP:8001" serverName=0 routerName=myrouter@file serviceName=goserver entryPointName=web        traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Added outgoing tracing middleware goserver" routerName=myrouter@file middlewareName=tracing middlewareType=TracingForwarder entryPointName=web
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Creating middleware" entryPointName=web routerName=myrouter@file middlewareName=auth@file middlewareType=BasicAuth
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Adding tracing to middleware" entryPointName=web routerName=myrouter@file middlewareName=auth@file
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Creating middleware" entryPointName=web middlewareName=traefik-internal-recovery middlewareType=Recovery
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Added outgoing tracing middleware api@internal" routerName=api@file middlewareName=tracing middlewareType=TracingForwarder entryPointName=websecure
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Creating middleware" middlewareType=BasicAuth entryPointName=websecure routerName=api@file middlewareName=auth@file
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Adding tracing to middleware" middlewareName=auth@file entryPointName=websecure routerName=api@file
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="Creating middleware" middlewareName=traefik-internal-recovery middlewareType=Recovery entryPointName=websecure
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=debug msg="No default certificate, generating one"
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:07Z" level=error msg="the router api@file uses a non-existent resolver: myresolver"
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:59Z" level=debug msg="Serving default certificate for request: \"traefik.example.in\""
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:59Z" level=debug msg="http: TLS handshake error from 45.118.159.166:59367: remote error: tls: unknown certificate"
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:59Z" level=debug msg="Serving default certificate for request: \"traefik.example.in\""
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:00:59Z" level=debug msg="http: TLS handshake error from 45.118.159.166:59368: remote error: tls: unknown certificate"
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:01:01Z" level=debug msg="Serving default certificate for request: \"traefik.example.in\""
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:01:01Z" level=debug msg="http: TLS handshake error from 45.118.159.166:59369: remote error: tls: unknown certificate"
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:01:01Z" level=debug msg="Serving default certificate for request: \"traefik.example.in\""
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:01:01Z" level=debug msg="Authentication succeeded" middlewareType=BasicAuth middlewareName=auth@file
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:01:01Z" level=debug msg="Authentication succeeded" middlewareType=BasicAuth middlewareName=auth@file
traefik_traefik.1.wnc3u38hjtif@gcloud1    | time="2020-02-20T13:01:01Z" level=debug msg="Authentication succeeded" middlewareName=auth@file middlewareType=BasicAuth