etcd集群搭建 - 软件仓

#方式一：YUM源安装

>##安装
	#yum -y install etcd
>##节点配置文件
	文件位置 /etc/etcd/conf.yml

>##节点一
	#[Member]
	ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
	ETCD_LISTEN_PEER_URLS="http://192.168.31.192:2380"	ETCD_LISTEN_CLIENT_URLS="http://192.168.31.192:2379,http://127.0.0.1:2379"
	ETCD_NAME="etcd1"
	#[Clustering]
	ETCD_INITIAL_ADVERTISE_PEER_URLS="http://192.168.31.192:2380"	ETCD_ADVERTISE_CLIENT_URLS="http://192.168.31.192:2379"	ETCD_INITIAL_CLUSTER="etcd1=http://192.168.31.192:2380,etcd2=http://192.168.31.38:2380"
	ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
	ETCD_INITIAL_CLUSTER_STATE="new"

>##节点二
	#[Member]
	ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
	ETCD_LISTEN_PEER_URLS="http://192.168.31.38:2380"	ETCD_LISTEN_CLIENT_URLS="http://192.168.31.38:2379,http://127.0.0.1:2379"
	ETCD_NAME="etcd2"
	#[Clustering]
	ETCD_INITIAL_ADVERTISE_PEER_URLS="http://192.168.31.38:2380"	ETCD_ADVERTISE_CLIENT_URLS="http://192.168.31.38:2379"	ETCD_INITIAL_CLUSTER="etcd1=http://192.168.31.192:2380,etcd2=http://192.168.31.38:2380"
	ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
	ETCD_INITIAL_CLUSTER_STATE="new"

>##重启服务
	systemctl restart etcd
	
>##测试
	etcdctl member list
![](/media//202003/2020-03-021520542389381.jpg)
	#etcdctl cluster-health
![](/media//202003/2020-03-021555409556742.jpg)

#方式二：二进制安装

>##下载
	https://github.com/etcd-io/etcd/releases

>##安装
	tar -zxvf  etcd-v3.3.18-linux-amd64.tar.gz -C /opt/
	cp /opt/etcd-v3.3.18-linux-amd64/etcd* /usr/local/bin/

>##节点一启动
	etcd --name etcd1 \
	#启动集群的时候指定集群口令，只有相同token的节点才能加入同意集群
	--initial-cluster-token cluster1 \
	#初始化集群状态，也可指定为exi-sting表示要加入一个已有集群
	--initial-cluster-state new \
	#客户端请求的监听地址列表
	--listen-client-urls http://192.168.31.192:2379,http://127.0.0.1:2379 \
	#Peer消息的监听服务地址列表
	--listen-peer-urls http://192.168.31.192:2380 \
	#广播到集群中本成员的监听客户端请求地址
	--advertise-client-urls http://192.168.31.192:2379 \
	#广播到集群中本成员的peer监听通信地址
	--initial-advertise-peer-urls http://192.168.31.192:2380 \
	#集群成员
	--initial-cluster etcd1=http://192.168.31.192:2380,etcd2=http://192.168.31.38:2380

>##节点二启动
	etcd --name etcd2 \
	#启动集群的时候指定集群口令，只有相同token的节点才能加入同意集群
	--initial-cluster-token cluster1 \
	#初始化集群状态，也可指定为exi-sting表示要加入一个已有集群
	--initial-cluster-state new \
	#客户端请求的监听地址列表
	--listen-client-urls http://192.168.31.38:2379,http://127.0.0.1:2379 \
	#Peer消息的监听服务地址列表
	--listen-peer-urls http://192.168.31.38:2380 \
	#广播到集群中本成员的监听客户端请求地址
	--advertise-client-urls http://192.168.31.38:2379 \
	#广播到集群中本成员的peer监听通信地址
	--initial-advertise-peer-urls http://192.168.31.38:2380 \
	#集群成员
	--initial-cluster etcd1=http://192.168.31.38:2380,etcd2=http://192.168.31.38:2380

>##测试
	etcdctl member list
![](/media//202003/2020-03-021520542389381.jpg)
	#etcdctl cluster-health
![](/media//202003/2020-03-021555409556742.jpg)

##注意：以上两种方法均为静态配置集群，节点信息有变动，需手动修改配置信息
---
#动态配置
	#1.申请uuid
	curl https://discovery.etcd.io/new?size=3
	
![](/media//202004/2020-04-07174127204123.png)

#2.将方法一或方法二中“--initial-cluster”换成所获得uuid
	--discovery https://discovery.etcd.io/06f7e4ea818b6fef3c5968710fe520bb