Deploying multiple zookeepers in docker swarm

Question

I'm attempting to deploy multiple zookeepers (each in their own container) using Docker Swarm.

Eventually I want to use 3 zookeepers, but for now I'm just trying to get 2 instances to work.

My current docker-compose.yml:

version: '3'

services:
  zoo1:
    image: zookeeper
    restart: unless-stopped
    hostname: zoo1
    ports:
      - 2181:2181
    environment:
        ZOO_MY_ID: 1
        ZOO_SERVERS: server.1=0.0.0.0:2888:3888;server.2=zoo2:2888:3888
    volumes:
      - ./full-stack/zoo1/data:/data
      - ./full-stack/zoo1/datalog:/datalog
    networks:
      - kafka_network

  zoo2:
    image: zookeeper
    restart: unless-stopped
    hostname: zoo2
    ports:
      - 2182:2181
    environment:
        ZOO_MY_ID: 2
        ZOO_SERVERS: server.1=zoo1:2888:3888;server.2=0.0.0.0:2888:3888
    volumes:
      - ./full-stack/zoo2/data:/data
      - ./full-stack/zoo2/datalog:/datalog
    networks:
      - kafka_network

  visualizer:
    image: dockersamples/visualizer:stable
    volumes:
      - "/var/run/docker.sock:/var/run/docker.sock"
    ports:
      - "8080:8080"
    deploy:
      placement:
        constraints: [node.role == manager]

networks:
  kafka_network:
    external:
      name: kafkaNetwork

kafkaNetwork is an overlay network I created using the command

docker network create -d overlay --attachable kafkaNetwork

I found the following docker forum post https://forums.docker.com/t/cannot-get-zookeeper-to-work-running-in-docker-using-swarm-mode/27109/3 but wasn't able to successfully get my instances of zookeeper to work.

score 0 · Accepted Answer · answered May 14 '18 at 20:38

Solved.

version: '3.2'

services:
  zoo1:
    image: zookeeper
    restart: always
    hostname: zoo1
    ports:
      - 2181:2181
    environment:
      ZOO_MY_ID: 1
      ZOO_SERVERS: server.1=0.0.0.0:2888:3888 server.2=zoo2:2888:3888 server.3=zoo3:2888:3888

  zoo2:
    image: zookeeper
    restart: always
    hostname: zoo2
    ports:
      - 2182:2181
    environment:
      ZOO_MY_ID: 2
      ZOO_SERVERS: server.1=zoo1:2888:3888 server.2=0.0.0.0:2888:3888 server.3=zoo3:2888:3888

  zoo3:
    image: zookeeper
    restart: always
    hostname: zoo3
    ports:
      - 2183:2181
    environment:
      ZOO_MY_ID: 3
      ZOO_SERVERS: server.1=zoo1:2888:3888 server.2=zoo2:2888:3888 server.3=0.0.0.0:2888:3888

Deploying multiple zookeepers in docker swarm

1 Answers1