3-5台linux系统的机器，下面以3台为例
1 123.206.68.101 172.21.0.17
2 123.206.47.101 172.21.0.4
3 140.143.53.153 172.21.0.10
1.下载Consul
https://www.consul.io/downloads.html
consul下载下来后貌似没有后缀
2.将安装文件复制到3个机器
scp consul [email protected]:/root/install
scp consul [email protected]:/root/install
scp consul [email protected]:/root/install
3.启动Consul集群
（1）服务器1(172.21.0.17)启动serverAgent
nohup ./consul agent -server -data-dir=/root/install/consuldata -node=server-1 -bind=172.21.0.17 -bootstrap-expect 1 -client 0.0.0.0 -ui &
| consul agent | 创建一个consul agent |
| -server | 有此参数说明是serverAgent,没有说明为clientAgent |
| -data-dir | 数据(集群信息、注册服务信息、健康检查信息等)存储的目录 |
| -node | 节点名称，集群中唯一 |
| -bind | 节点的IP地址 |
| -bootstrap-expect 1 | 延迟日志复制的启动 |
| -client 0.0.0.0-ui | 启动ConsulUI,不添加只能在本机上使用 |
| -dc | 数据中心 |
(2)服务器2(172.21.0.4)
nohup ./consul agent -data-dir=/root/install/consuldata -node=client-2 -bind=172.21.0.4 -join=172.21.0.17 &
(3)服务器3(172.21.0.10)
nohup ./consul agent -data-dir=/root/install/consuldata -node=client-3 -bind=172.21.0.10 -join=172.21.0.17 &