Goqueue/docker-compose.yml at main · ranmori/Goqueue · GitHub

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# Local HA stack: a 3-node etcd cluster, one Postgres, and two GoQueue
# instances competing for leadership. See scripts/failover-demo.sh.
#
#   docker compose up -d --build --wait
#   curl localhost:8081/leader; curl localhost:8082/leader
#
# Three etcd members, not one: etcd needs a majority (2 of 3) to commit
# anything, including lease expiry. With three you can `docker stop etcd2`
# and elections keep working; stop a second member and they correctly
# halt instead of risking two leaders.

x-etcd: &etcd
  image: gcr.io/etcd-development/etcd:v3.5.21
  environment: &etcd-env
    ETCD_INITIAL_CLUSTER: etcd1=http://etcd1:2380,etcd2=http://etcd2:2380,etcd3=http://etcd3:2380
    ETCD_INITIAL_CLUSTER_STATE: new
    ETCD_INITIAL_CLUSTER_TOKEN: goqueue-dev
    ETCD_LISTEN_CLIENT_URLS: http://0.0.0.0:2379
    ETCD_LISTEN_PEER_URLS: http://0.0.0.0:2380
  healthcheck:
    test: ["CMD", "etcdctl", "endpoint", "health"]
    interval: 2s
    timeout: 2s
    retries: 15

x-goqueue: &goqueue
  build: .
  environment: &goqueue-env
    DATABASE_URL: postgres://goqueue:goqueue@postgres:5432/goqueue?sslmode=disable
    ETCD_ENDPOINTS: etcd1:2379,etcd2:2379,etcd3:2379
    ETCD_SESSION_TTL: "5"
  depends_on:
    postgres: { condition: service_healthy }
    etcd1: { condition: service_healthy }
    etcd2: { condition: service_healthy }
    etcd3: { condition: service_healthy }
  # An instance that loses leadership exits on purpose and is restarted
  # here as a fresh follower. `docker kill`/`docker stop` count as manual
  # stops, so the demo's killed leader stays down.
  restart: on-failure
  stop_grace_period: 20s

services:
  etcd1:
    <<: *etcd
    environment:
      <<: *etcd-env
      ETCD_NAME: etcd1
      ETCD_ADVERTISE_CLIENT_URLS: http://etcd1:2379
      ETCD_INITIAL_ADVERTISE_PEER_URLS: http://etcd1:2380
    ports: ["2379:2379"]
  etcd2:
    <<: *etcd
    environment:
      <<: *etcd-env
      ETCD_NAME: etcd2
      ETCD_ADVERTISE_CLIENT_URLS: http://etcd2:2379
      ETCD_INITIAL_ADVERTISE_PEER_URLS: http://etcd2:2380
  etcd3:
    <<: *etcd
    environment:
      <<: *etcd-env
      ETCD_NAME: etcd3
      ETCD_ADVERTISE_CLIENT_URLS: http://etcd3:2379
      ETCD_INITIAL_ADVERTISE_PEER_URLS: http://etcd3:2380

  postgres:
    image: postgres:16-alpine
    environment:
      POSTGRES_USER: goqueue
      POSTGRES_PASSWORD: goqueue
      POSTGRES_DB: goqueue
    ports: ["5432:5432"]
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U goqueue"]
      interval: 2s
      timeout: 2s
      retries: 15

  goqueue-1:
    <<: *goqueue
    container_name: goqueue-1
    environment:
      <<: *goqueue-env
      INSTANCE_ID: goqueue-1
    ports: ["8081:8080"]
  goqueue-2:
    <<: *goqueue
    container_name: goqueue-2
    environment:
      <<: *goqueue-env
      INSTANCE_ID: goqueue-2
    ports: ["8082:8080"]