112、如何使用stack （Swarm19）

参考 https://www.cnblogs.com/CloudMan6/p/8135714.html

 

定义好了 stack YAML 文件，就可以通过 docker stack deploy 命令部署应用，命令最后面的wpstack 是自动创建各项资源的前缀，方便区分不同的环境

 

root@host03:~# docker stack deploy -c wp.yaml wpstack    #    部署stack

Creating network wpstack_default

Creating secret wpstack_db_password

Creating secret wpstack_db_root_password

Creating service wpstack_db

Creating service wpstack_wordpress

root@host03:~# docker stack ls    #    查看stack list

NAME                SERVICES            ORCHESTRATOR

wpstack             2                   Swarm

root@host03:~# docker stack services wpstack    #    查看某stack包含的service list

ID                  NAME                MODE                REPLICAS            IMAGE               PORTS

60gocweop7sy        wpstack_wordpress   replicated          1/1                 wordpress:latest    *:80->80/tcp

wpi8ieo8k89z        wpstack_db          replicated          0/1                 mysql:5.7           

root@host03:~# docker service ps wpstack_db    #    查看 **_db service

ID                  NAME                IMAGE               NODE                DESIRED STATE       CURRENT STATE                    ERROR                       PORTS

lmpt206stwnl        wpstack_db.1        mysql:5.7           host02              Running             Running less than a second ago                               

root@host03:~# docker service ps wpstack_wordpress    #    查看 **_wordpress service

ID                  NAME                  IMAGE               NODE                DESIRED STATE       CURRENT STATE            ERROR               PORTS

q4zbhhs2nl7d        wpstack_wordpress.1   wordpress:latest    host02              Running             Running 33 seconds ago                       

 

访问 http://10.12.31.211    验证部署结果

 

root@host03:~# sed -i 's/80:80/81:80/' wp.yaml    #    修改wordpress对外端口号

root@host03:~# docker stack deploy -c wp.yaml wpstack    #    更新stack 配置

Updating service wpstack_db (id: wpi8ieo8k89z46ahxuwbnu357)

Updating service wpstack_wordpress (id: 60gocweop7sytwa5eab7zffkf)

root@host03:~# docker stack ls

NAME                SERVICES            ORCHESTRATOR

wpstack             2                   Swarm

root@host03:~# docker stack services wpstack

ID                  NAME                MODE                REPLICAS            IMAGE               PORTS

60gocweop7sy        wpstack_wordpress   replicated          1/1                 wordpress:latest    *:81->80/tcp

wpi8ieo8k89z        wpstack_db          replicated          1/1                 mysql:5.7           

root@host03:~# docker service ps wpstack_db

ID                  NAME                IMAGE               NODE                DESIRED STATE       CURRENT STATE           ERROR                       PORTS

lmpt206stwnl        wpstack_db.1        mysql:5.7           host02              Running             Running 3 minutes ago                               

root@host03:~# docker service ps wpstack_wordpress　　#　　可以看到新建并启动了一个副本

ID                  NAME                      IMAGE               NODE                DESIRED STATE       CURRENT STATE             ERROR               PORTS

nqpzyhi353qt        wpstack_wordpress.1       wordpress:latest    host01              Running             Running 45 seconds ago                        

q4zbhhs2nl7d         \_ wpstack_wordpress.1   wordpress:latest    host02              Shutdown            Shutdown 47 seconds ago                       

 

访问 http://10.12.31.211 验证部署结果

 

root@host03:~# docker stack rm wpstack    #    删除stack

Removing service wpstack_db

Removing service wpstack_wordpress

Removing secret wpstack_db_password

Removing secret wpstack_db_root_password

Removing network wpstack_default

 

 

如果想更新stack的某些属性，直接修改 YAML文件即可，然后再次执行上面的命令。