etcd集群部署文档

1.部署的服务器ip地址
   172.16.0.151
   172.16.0.173
   172.16.0.220
2.etcd版本
	wget  https://github.com/etcd-io/etcd/releases/download/v3.5.0/etcd-v3.5.0-linux-amd64.tar.gz
3.三台服务器安装目录 /data/ 
4.启动脚本
	cd /data/etcd-v3.5.0
	[root@im-03 etcd-v3.5.0]cat etcd.sh
	#For each machine
	TOKEN=my-etcd-token-1
	CLUSTER_STATE=new
	NAME_1=etcd_1
	NAME_2=etcd_2
	NAME_3=etcd_3
	HOST_1=172.16.0.151
	HOST_2=172.16.0.173
	HOST_3=172.16.0.220
	CLUSTER=${NAME_1}=http://${HOST_1}:2380,${NAME_2}=http://${HOST_2}:2380,${NAME_3}=http://${HOST_3}:2380

	# For node 1
	THIS_NAME=${NAME_1}
	THIS_IP=${HOST_1}
	/data/etcd-v3.5.0/etcd --data-dir=/data/etcd-v3.5.0/data.etcd --name ${THIS_NAME} \
	--initial-advertise-peer-urls http://${THIS_IP}:2380 \
	--listen-peer-urls http://${THIS_IP}:2380 \
	--advertise-client-urls http://${THIS_IP}:2379,http://127.0.0.1:2379 \
	--listen-client-urls http://${THIS_IP}:2379,http://127.0.0.1:2379 \
	--initial-cluster ${CLUSTER} \
	--initial-cluster-state ${CLUSTER_STATE} \
	--initial-cluster-token ${TOKEN} > /data/etcd-v3.5.0/etcd.out 2>&1 &

	
	
	[root@im-04 etcd-v3.5.0]cat etcd.sh
	#for each machine
	TOKEN=my-etcd-token-1
	CLUSTER_STATE=new
	NAME_1=etcd_1
	NAME_2=etcd_2
	NAME_3=etcd_3
	HOST_1=172.16.0.151
	HOST_2=172.16.0.173
	HOST_3=172.16.0.220
	CLUSTER=${NAME_1}=http://${HOST_1}:2380,${NAME_2}=http://${HOST_2}:2380,${NAME_3}=http://${HOST_3}:2380

	# For node 2
	THIS_NAME=${NAME_2}
	THIS_IP=${HOST_2}
	/data/etcd-v3.5.0/etcd --data-dir=/data/etcd-v3.5.0/data.etcd --name ${THIS_NAME} \
	--initial-advertise-peer-urls http://${THIS_IP}:2380 \
	--listen-peer-urls http://${THIS_IP}:2380 \
	--advertise-client-urls http://${THIS_IP}:2379,http://127.0.0.1:2379 \
	--listen-client-urls http://${THIS_IP}:2379,http://127.0.0.1:2379 \
	--initial-cluster ${CLUSTER} \
	--initial-cluster-state ${CLUSTER_STATE} \
	--initial-cluster-token ${TOKEN} > /data/etcd-v3.5.0/etcd.out 2>&1 &
	
	[root@im-05 etcd-v3.5.0]cat etcd.sh
	# For each machine
	TOKEN=my-etcd-token-1
	CLUSTER_STATE=new
	NAME_1=etcd_1
	NAME_2=etcd_2
	NAME_3=etcd_3
	HOST_1=172.16.0.151
	HOST_2=172.16.0.173
	HOST_3=172.16.0.220
	CLUSTER=${NAME_1}=http://${HOST_1}:2380,${NAME_2}=http://${HOST_2}:2380,${NAME_3}=http://${HOST_3}:2380

	# For node 3
	THIS_NAME=${NAME_3}
	THIS_IP=${HOST_3}
	/data/etcd-v3.5.0/etcd --data-dir=/data/etcd-v3.5.0/data.etcd --name ${THIS_NAME} \
	--initial-advertise-peer-urls http://${THIS_IP}:2380 \
	--listen-peer-urls http://${THIS_IP}:2380 \
	--advertise-client-urls http://${THIS_IP}:2379,http://127.0.0.1:2379 \
	--listen-client-urls http://${THIS_IP}:2379,http://127.0.0.1:2379 \
	--initial-cluster ${CLUSTER} \
	--initial-cluster-state ${CLUSTER_STATE} \
	--initial-cluster-token ${TOKEN} > /data/etcd-v3.5.0/etcd.out 2>&1 &

5.三台服务器分别执行etcd.sh赋予执行权限并启动
	chmod +x /data/etcd-v3.5.0/etcd.sh
	/data/etcd-v3.5.0/etcd.sh
6.三台服务器分别执行建立软连接
[root@im-05 etcd-v3.5.0]# ln -s /data/etcd-v3.5.0/etcd /usr/local/bin/etcd
[root@im-05 etcd-v3.5.0]# ln -s /data/etcd-v3.5.0/etcdctl /usr/local/bin/etcdctl
[root@im-05 etcd-v3.5.0]# ln -s /data/etcd-v3.5.0/etcdutl /usr/local/bin/etcdutl
7./usr/local/bin/加入环境变量
    vim /etc/profile
	export PATH=/usr/local/bin/:$PATH
	
8.	执行命令 source /etc/profile
	
9.
（1）查看集群成员健康情况：
[root@im-05 etcd-v3.5.0]# etcdctl endpoint health --endpoints="http://172.16.0.151:2380,http://172.16.0.173:2380,http://172.16.0.220:2380"
http://172.16.0.173:2380 is healthy: successfully committed proposal: took = 4.430984ms
http://172.16.0.151:2380 is healthy: successfully committed proposal: took = 4.378476ms
http://172.16.0.220:2380 is healthy: successfully committed proposal: took = 4.759539ms

（2）查看集群成员列表：
[root@im-05 etcd-v3.5.0]# etcdctl member list
88ba7d086f91dc5e, started, etcd_3, http://172.16.0.220:2380, http://127.0.0.1:2379,http://172.16.0.220:2379, false
932d1a5425ec0f72, started, etcd_2, http://172.16.0.173:2380, http://127.0.0.1:2379,http://172.16.0.173:2379, false
f0ac2546d16a17f4, started, etcd_1, http://172.16.0.151:2380, http://127.0.0.1:2379,http://172.16.0.151:2379, false

10.参考文档	

	https://www.cnblogs.com/hanease/p/16332130.html
	https://cloud.tencent.com/developer/article/1890434
	https://www.cnblogs.com/wujuntian/p/15121004.html