ubuntu+docker搭建etcd集群

本文基于compose管理镜像，对此不熟悉的，可以先了解下如何使用。 ####安装compose 下载compose,使用下面的指令下载compose ``` sudo curl -L "https://github.com/docker/compose/releases/download/1.24.1/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose ``` 将可执行权限应用于二进制文件： ``` sudo chmod +x /usr/local/bin/docker-compose ``` 创建软链： ``` sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose ``` 测试是否安装成功： ``` docker-compose --version cker-compose version 1.24.1, build 4667896b ``` ####拉取etcd官方镜像 ``` docker pull quay.io/coreos/etcd ``` 在一个文件夹下创建 etcd-compose.yml文件，用于管理etcd容器 在文件中贴如如下内容： ``` version: '3' services: etcd-node1: image: "quay.io/coreos/etcd" container_name: "etcd-node1" ports: - "12379:2379" - "12380:2380" command: 'etcd -name etcd-node1 -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 "etcd-node1=http://etcd-node1:2380,etcd-node2=http://etcd-node2:2380,etcd-node3=http://etcd-node3:2380" -initial-cluster-state new' networks: - "etcd" etcd-node2: image: "quay.io/coreos/etcd" container_name: "etcd-node2" ports: - "22379:2379" - "22380:2380" command: 'etcd -name etcd-node2 -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 "etcd-node1=http://etcd-node1:2380,etcd-node2=http://etcd-node2:2380,etcd-node3=http://etcd-node3:2380" -initial-cluster-state new' networks: - "etcd" etcd-node3: image: "quay.io/coreos/etcd" container_name: "etcd-node3" ports: - "32379:2379" - "32380:2380" command: 'etcd -name etcd-node3 -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 "etcd-node1=http://etcd-node1:2380,etcd-node2=http://etcd-node2:2380,etcd-node3=http://etcd-node3:2380" -initial-cluster-state new' networks: - "etcd" networks: etcd: ``` 启动yml文件 ``` docker-compose -f etcd-compose.yml up -d ``` 使用指令，查看容器启动情况 ``` docker ps -a ``` 可以看到如下内容  至此，etcd容器集群搭建完毕. 查看注册到etcd的服务有两种方法，一种是进入etcd容器，使用etcdctl指令查看，这里不再介绍。 介绍一种使用go-micro工具查看注册到etcd服务的方法 在goland中执行如下指令 ``` set MICRO_REGISTRY=etcd set MICRO_REGISTRY_ADDRESS=192.168.109.131:12379 set MICRO_API_NAMESPACE=api.tutor.com micro web ``` 192.168.109.131是我的虚拟机ip 12379这是上面创建的etcd容器代理端口 然后在浏览器输入：http://localhost:8082/registry 即可看到如下效果：  红框内的 是我注册到etcd的服务