docker-compose快速搭建etcd集群

搭建

docker-compose.yml

version: '3'
networks:
  etcd-net:

services:
  etcd1:
    image: quay.io/coreos/etcd
    container_name: etcd1
    command: etcd -name etcd1 -advertise-client-urls http://0.0.0.0:2379 -listen-client-urls http://0.0.0.0:2379 -listen-peer-urls http://0.0.0.0:2380 -initial-cluster-token etcd-cluster -initial-cluster "etcd1=http://etcd1:2380,etcd2=http://etcd2:2380,etcd3=http://etcd3:2380" -initial-cluster-state new
    ports:
      - "23791:2379"
      - "23801:2380"
    networks:
      - etcd-net

  etcd2:
    image: quay.io/coreos/etcd
    container_name: etcd2
    command: etcd -name etcd2 -advertise-client-urls http://0.0.0.0:2379 -listen-client-urls http://0.0.0.0:2379 -listen-peer-urls http://0.0.0.0:2380 -initial-cluster-token etcd-cluster -initial-cluster "etcd1=http://etcd1:2380,etcd2=http://etcd2:2380,etcd3=http://etcd3:2380" -initial-cluster-state new
    ports:
      - "23792:2379"
      - "23802:2380"
    networks:
      - etcd-net

  etcd3:
    image: quay.io/coreos/etcd
    container_name: etcd3
    command: etcd -name etcd3 -advertise-client-urls http://0.0.0.0:2379 -listen-client-urls http://0.0.0.0:2379 -listen-peer-urls http://0.0.0.0:2380 -initial-cluster-token etcd-cluster -initial-cluster "etcd1=http://etcd1:2380,etcd2=http://etcd2:2380,etcd3=http://etcd3:2380" -initial-cluster-state new
    ports:
      - "23793:2379"
      - "23803:2380"
    networks:
      - etcd-net

集群参数介绍

• data-dir 指定节点的数据存储目录，这些数据包括节点ID，集群ID，集群初始化配置，Snapshot文件，若未指定—wal-dir，还会存储WAL文件；

• wal-dir 指定节点的was文件的存储目录，若指定了该参数，wal文件会和其他数据文件分开存储。

• name 节点名称

• initial-advertise-peer-urls 告知集群其他节点url.

• listen-peer-urls 监听URL，用于与其他节点通讯

• advertise-client-urls 告知客户端url, 也就是服务的url

• initial-cluster-token 集群的ID

• initial-cluster 集群中所有节点

• initial-cluster-state 监听客户端状态

• listen-client-urls 监听客户端地址

• initial-cluster-state new 初始化集群 为新节点

启动服务

docker-compose up -d

测试

curl http://127.0.0.1:23791/v2/keys/foo  -XPUT -d value="hello foo"
curl http://127.0.0.1:23791/v2/keys/foo1/foo1 -XPUT -d value="hello foo1"

curl http://127.0.0.1:23792/v2/keys/foo
curl http://127.0.0.1:23792/v2/keys/foo1

来源

使用docker-compose搭建etcd集群