scaling traefic example in swarm mode

[dcrystalj]

It would be really nice if you could provide example script which shows running multiple traefik instances in cluster, to avoid single point of failure.

I know cluster needs multiple consul instances to share config file for all traefic containers, but from documentation it is very hard to get.

[CyrilPeponnet]

This is how I've done it with docker swarm if it can help.

version: "3"
services:
  traefik:
    image: cyrilpeponnet/traefik:latest
    deploy:
      update_config:
        parallelism: 1
        delay: 10s
      mode: global
      placement:
        constraints: [node.role == manager]
    environment:
      - "AWS_ACCESS_KEY_ID=BLA"
      - "AWS_SECRET_ACCESS_KEY=BLABLA"
      - "AWS_REGION=us-west-2"
    ports:
      - 80:80
      - 443:443
      - 8080:8080
    networks:
      - backend
      - consul-net
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    command: |-
      -c /dev/null
      --web
      --consul
      --consul.endpoint=consul-cluster:8500
      --consul.watch=true
      --docker
      --docker.swarmmode
      --docker.domain=traefik
      --docker.watch
      --debug

  consul-cluster:
    image: consul:latest
    deploy:
      update_config:
        parallelism: 1
        delay: 10s
      mode: global
      placement:
        constraints: [node.role == manager]
    ports:
      - 8500:8500
    networks:
      - consul-net
    environment:
      - 'CONSUL_BIND_INTERFACE=eth2'
    command: agent -server -datacenter traefik -ui -retry-join=tasks.consul-cluster -retry-join=tasks.consul-cluster -retry-join=tasks.consul-cluster -bootstrap-expect=3 -client=0.0.0.0


networks:
  backend:
      driver: overlay
  consul-net:
      driver: overlay

[dcrystalj]

thank you sir! This is what I was looking for, but for some reason it doesn't spin the services using deploy command. I get task: non-zero exit (255)" for both traefik and consul.

[llitfkitfk]

1. compose.yml:

2. docker stack deploy -c compose.yml gateway to deploy traefik & whoami :

3. docker service scale gateway_whami=10, dashboard no change:

[traefiker]

Closed by #2589.