下載 consul 鏡像
[mkstar@chdlxt214 ~]$ docker pull consul
Using default tag: latest
Trying to pull repository docker.io/library/consul ...
latest: Pulling from docker.io/library/consul
e7c96db7181b: Pull complete
86b1a60a2bea: Pull complete
2392e3d27776: Pull complete
565cd9d57cb0: Pull complete
ac738aa67e22: Pull complete
0c0298519820: Pull complete
Digest: sha256:2ec19048abef7ff163206d7cd30147e6b2e5b73f260c2c6e4d092e648d4f68bc
Status: Downloaded newer image for docker.io/consul:latest
啓動三個server容器
server-01
docker run -itd --name mk-cserver-01 --restart=always -p 8500:8500 consul agent -ui -bootstrap-expect=3 -server -client=0.0.0.0
server-02
docker run -itd --name mk-cserver-02 --restart=always -p 8501:8500 consul agent -bootstrap-expect=3 -server -retry-join=172.17.0.2
server-03
docker run -itd --name mk-cserver-03 --restart=always -p 8502:8500 consul agent -bootstrap-expect=3 -server -retry-join=172.17.0.2
這裏需要注意的是隻有server-01指定了-ui和-client=0.0.0.0，說明只有server-01提供了外部可訪問的ui和ip地址
server-02和server-03指定了-retry-join=172.17.0.2，目的是爲了加入server-01集羣。172.17.0.2是server-01在docker中的ip值。
啓動一個客戶端容器
docker run -itd --name mk-cclient-01 --restart=always -p 8550:8500 consul agent -ui -client=0.0.0.0 -retry-join=172.17.0.2
這裏需要特別注意的是客戶端移除了-server和-bootstrap-expect=3指令