etcd-stack.yml

version: '3.8'

services:
  etcd-00:
    image: quay.io/coreos/etcd:v3.5.0
    hostname: etcd-00
    command:
      - etcd
      - --name=etcd-00
      - --data-dir=data.etcd
      - --advertise-client-urls=http://etcd-00:2379
      - --listen-client-urls=http://0.0.0.0:2379
      - --initial-advertise-peer-urls=http://etcd-00:2380
      - --listen-peer-urls=http://0.0.0.0:2380
      - --initial-cluster=etcd-00=http://etcd-00:2380,etcd-01=http://etcd-01:2380,etcd-02=http://etcd-02:2380
      - --initial-cluster-state=new
      - --initial-cluster-token=etcd-cluster-1
    volumes:
      - etcd-00vol:/data.etcd
    networks:
      - etcd
    deploy:
      replicas: 1
      update_config:
        parallelism: 1
        delay: 10s
      restart_policy:
        condition: on-failure

  etcd-01:
    image: quay.io/coreos/etcd:v3.5.0
    hostname: etcd-01
    command:
      - etcd
      - --name=etcd-01
      - --data-dir=data.etcd
      - --advertise-client-urls=http://etcd-01:2379
      - --listen-client-urls=http://0.0.0.0:2379
      - --initial-advertise-peer-urls=http://etcd-01:2380
      - --listen-peer-urls=http://0.0.0.0:2380
      - --initial-cluster=etcd-00=http://etcd-00:2380,etcd-01=http://etcd-01:2380,etcd-02=http://etcd-02:2380
      - --initial-cluster-state=new
      - --initial-cluster-token=etcd-cluster-1
    volumes:
      - etcd-01vol:/data.etcd
    networks:
      - etcd
    deploy:
      replicas: 1
      update_config:
        parallelism: 1
        delay: 10s
      restart_policy:
        condition: on-failure

  etcd-02:
    image: quay.io/coreos/etcd:v3.5.0
    hostname: etcd-02
    command:
      - etcd
      - --name=etcd-02
      - --data-dir=data.etcd
      - --advertise-client-urls=http://etcd-02:2379
      - --listen-client-urls=http://0.0.0.0:2379
      - --initial-advertise-peer-urls=http://etcd-02:2380
      - --listen-peer-urls=http://0.0.0.0:2380
      - --initial-cluster=etcd-00=http://etcd-00:2380,etcd-01=http://etcd-01:2380,etcd-02=http://etcd-02:2380
      - --initial-cluster-state=new
      - --initial-cluster-token=etcd-cluster-1
    volumes:
      - etcd-02vol:/data.etcd
    networks:
      - etcd
    deploy:
      replicas: 1
      update_config:
        parallelism: 1
        delay: 10s
      restart_policy:
        condition: on-failure

  nginx:
    image: nginx:alpine
    hostname: nginx-etcd
    configs:
      - source: nginx_config
        target: /etc/nginx/nginx.conf
    networks:
     - etcd
    ports:
      - 2379:2379
    deploy:
      replicas: 1
      update_config:
        parallelism: 1
        delay: 10s
      restart_policy:
        condition: on-failure

configs:
  nginx_config:
    file: ./nginx/nginx.conf

volumes:
  etcd-00vol:
    driver: local
  etcd-01vol:
    driver: local
  etcd-02vol:
    driver: local

networks:
  etcd:
    driver: overlay
    driver_opts:
      encrypted: "true"
    internal: true