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。