第一步：先拉取etcd二进制压缩包
wget https://github.com/coreos/etcd/releases/download/v3.3.2/etcd-v3.3.2-linux-amd64.tar.gz //解压压缩包 tar zxvf etcd-v3.3.2-linux-amd64.tar.gz第二步：建立一个文件，分别存放bin文件，cfg配置文件，ssl验证文件
mkdir /opt/kubernetes/{bin,cfg,ssl} //然后将etcd，etcdctl移动到bin目录下 mv etcd-v3.3.2-linux-amd64/etcd /opt/kubernetes/bin/ mv etcd-v3.3.2-linux-amd64/etcdctl /opt/kubernetes/bin/第三步：创建etcd.service配置文件
vi /usr/lib/systemd/system/etcd.service //内容为 [Unit] Description=Etcd Server After=network.target After=network-online.target Wants=network-online.target [Service] Type=notify EnvironmentFile=-/opt/kubernetes/cfg/etcd ExecStart=/opt/kubernetes/bin/etcd \ --name=${ETCD_NAME} \ --data-dir=${ETCD_DATA_DIR} \ --listen-peer-urls=${ETCD_LISTEN_PEER_URLS} \ --listen-client-urls=${ETCD_LISTEN_CLIENT_URLS},http://127.0.0.1:2379 \ --advertise-client-urls=${ETCD_ADVERTISE_CLIENT_URLS} \ --initial-advertise-peer-urls=${ETCD_INITIAL_ADVERTISE_PEER_URLS} \ --initial-cluster=${ETCD_INITIAL_CLUSTER} \ --initial-cluster-token=${ETCD_INITIAL_CLUSTER} \ --initial-cluster-state=new \ --cert-file=/opt/kubernetes/ssl/server.pem \ --key-file=/opt/kubernetes/ssl/server-key.pem \ --peer-cert-file=/opt/kubernetes/ssl/server.pem \ --peer-key-file=/opt/kubernetes/ssl/server-key.pem \ --trusted-ca-file=/opt/kubernetes/ssl/ca.pem \ --peer-trusted-ca-file=/opt/kubernetes/ssl/ca.pem Restart=on-failure LimitNOFILE=65536 [Install] WantedBy=multi-user.target第四步：创建etcd配置文件
#[Member] ETCD_NAME="etcd01" //节点名字 ETCD_DATA_DIR="/var/lib/etcd/default.etcd" //数据目录 ETCD_LISTEN_PEER_URLS="https://172.16.163.131:2380" 当前节点的ip地址 ETCD_LISTEN_CLIENT_URLS="https://172.16.163.131:2379" #[Clustering] ETCD_INITIAL_ADVERTISE_PEER_URLS="https://172.16.163.131:2380" ETCD_ADVERTISE_CLIENT_URLS="https://172.16.163.131:2379" ETCD_INITIAL_CLUSTER="etcd01=https://172.16.163.131:2380,etcd02=https://172.16.163.130:2380,etcd03=https://172.16.163.129:2380" //集群所有的节点的ip地址 ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster" ETCD_INITIAL_CLUSTER_STATE="new"第五步：将TLS证书生成的pem文件，复制到/opt/kubernetes/ssl/目录下
cp ssl/server*pem ssl/ca*.pem /opt/kubernetes/ssl/第六步：启动etcd
systemctl daemon-reload systemctl start etcd systemctl enable etcd第七步：查看etcd是否启动
ps -ef |grep etcd第八步：设置互信免密登录
//生成秘钥和私钥 ssh-keygen //将秘钥和私钥复制到其他节点，这样就可以相互免密登录了 ssh-copy-id root@172.16.163.130第九步：将所有在master节点上的配置文件都拷贝到node节点上，都使用同样的配置文件，不同的地方在于有些配置文件的内容不同。这些操作只需要在master做就可以。
scp -r /opt/kubernetes/bin/ root@172.16.163.130:/opt/kubernetes/ //将etcd配置文件拷贝到node节点 scp -r /opt/kubernetes/cfg/ root@172.16.163.130:/opt/kubernetes/ scp -r /opt/kubernetes/ssl/ root@172.16.163.130:/opt/kubernetes/ //将etcd.service配置文件也要拷贝到node节点 scp /usr/lib/systemd/system/etcd.service root@172.16.163.130:/usr/lib/systemd/system第十步：因为etcd，etcdctl命令会常使用，所以将他们加入到PATH路径中
将etcd命令加入PATH vi /etc/profile 在最后一行加入：PATH=$PATH:/opt/kubernetes/bin 让配置生效 source /etc/profile第十一步：检查集群搭建成功与否
//执行这个命令需要进入到/opt/kubernetes/ssl目录，因为需要使用TLS证书 etcdctl --ca-file=ca.pem --cert-file=server.pem --key-file=server-key.pem --endpoints="https://172.16.163.130:2379,https://172.16.163.129:2379,https://172.16.163.131:2379" cluster-health 或者 etcdctl --ca-file=ca.pem --cert-file=server.pem --key-file=server-key.pem cluster-health //输出这个表示成功 member 204f1af770aff3d9 is healthy: got healthy result from https://172.16.163.129:2379 member 81e41daa4ea73cbc is healthy: got healthy result from https://172.16.163.130:2379 member d2349ea355902626 is healthy: got healthy result from https://172.16.163.131:2379 cluster is healthy报错：
这个报错是由数据目录引起的，只需要删除这个数据目录就可以了。
rm -rf /var/lib/etcd/default.etcd/
到这里错误处理完毕，etcd集群搭建完成。
转载于:https://www.cnblogs.com/jasonboren/p/11483898.html
