搭建etcd集群

[TOC] ## 安装epel源 ``` wget http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm rpm -ivh epel-release-latest-7.noarch.rpm ``` ## 安装etcd ``` yum install etcd ``` ## 配置hosts ``` vim /etc/hosts etcd-25-23 10.39.25.23 etcd-25-24 10.39.25.24 etcd-25-25 10.39.25.25 ``` ## 修改配置 10.39.25.23的配置 ``` vim /etc/etcd/etcd.conf ETCD_NAME=etcd-25-23 ETCD_DATA_DIR="/var/lib/etcd/etcd-cluster" ETCD_LISTEN_PEER_URLS="http://10.39.25.23:2380" ETCD_LISTEN_CLIENT_URLS="http://10.39.25.23:2379,http://127.0.0.1:2379" ETCD_INITIAL_ADVERTISE_PEER_URLS="http://10.39.25.23:2380" ETCD_INITIAL_CLUSTER="etcd-25-23=http://10.39.25.23:2380,etcd-25-24=http://10.39.25.24:2380,etcd-25-25=http://10.39.25.25:2380" ETCD_INITIAL_CLUSTER_STATE="new" ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster" ETCD_ADVERTISE_CLIENT_URLS="http://10.39.25.23:2379" systemctl start etcd systemctl satus etcd ``` 10.39.25.25的配置 ``` vim /etc/etcd/etcd.conf ETCD_NAME=etcd-25-25 ETCD_DATA_DIR="/var/lib/etcd/etcd-cluster" ETCD_LISTEN_PEER_URLS="http://10.39.25.25:2380" ETCD_LISTEN_CLIENT_URLS="http://10.39.25.25:2379,http://127.0.0.1:2379" ETCD_INITIAL_ADVERTISE_PEER_URLS="http://10.39.25.25:2380" ETCD_INITIAL_CLUSTER="etcd-25-23=http://10.39.25.23:2380,etcd-25-24=http://10.39.25.24:2380,etcd-25-25=http://10.39.25.25:2380" ETCD_INITIAL_CLUSTER_STATE="new" ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster" ETCD_ADVERTISE_CLIENT_URLS="http://10.39.25.25:2379" systemctl start etcd systemctl satus etcd ``` ``` 10.39.25.24的配置 vim /etc/etcd/etcd.conf ETCD_NAME=etcd-25-24 ETCD_DATA_DIR="/var/lib/etcd/etcd-cluster" ETCD_LISTEN_PEER_URLS="http://10.39.25.24:2380" ETCD_LISTEN_CLIENT_URLS="http://10.39.25.24:2379,http://127.0.0.1:2379" ETCD_INITIAL_ADVERTISE_PEER_URLS="http://10.39.25.24:2380" ETCD_INITIAL_CLUSTER="etcd-25-23=http://10.39.25.23:2380,etcd-25-24=http://10.39.25.24:2380,etcd-25-25=http://10.39.25.25:2380" ETCD_INITIAL_CLUSTER_STATE="new" ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster" ETCD_ADVERTISE_CLIENT_URLS="http://10.39.25.24:2379" systemctl start etcd systemctl satus etcd ``` ## 查看etcd集群节点 ``` etcdctl member list 7e5e9b85b854c4f6: name=etcd-25-23 peerURLs=http://10.39.25.23:2380 clientURLs=http://10.39.25.23:2379 isLeader=true c25ca32dd7fbc99f: name=etcd-25-24 peerURLs=http://10.39.25.24:2380 clientURLs=http://10.39.25.24:2379 isLeader=false de67b2618c148f0d: name=etcd-25-25 peerURLs=http://10.39.25.25:2380 clientURLs=http://10.39.25.25:2379 isLeader=false ``` ## 查看集群状态 ``` etcdctl cluster-health member 7e5e9b85b854c4f6 is healthy: got healthy result from http://10.39.25.23:2379 member c20ca32dd7fbc99f is healthy: got healthy result from http://10.39.25.24:2379 member de67b2618c148f0d is healthy: got healthy result from http://10.39.25.25:2379 cluster is healthy ``` ## 测试: 在23上创建一个TianRandai的目录 ``` [root@etcd-25-23 ~]# etcdctl mkdir TianRandai ``` 在24与25上查看是是否存在 ``` [root@etcd-25-24 ~]# etcdctl ls /TianRandai [root@etcd-25-25 ~]# etcdctl ls /TianRandai ```