描述。  显示所有集群节点之间的连接状态。当集群正常运行时，每个连接都具有相同的状态。

示例输出。 

Node 3: Connection to 1 (MGM) is connected
Node 3: Connection to 2 (MGM) is trying to connect
Node 3: Connection to 3 (DB) does nothing
Node 3: Connection to 4 (DB) is connected
Node 3: Connection to 7 (API) is connected
Node 3: Connection to 8 (API) is connected
Node 3: Connection to 9 (API) is trying to connect
Node 3: Connection to 10 (API) is trying to connect
Node 3: Connection to 11 (API) is trying to connect
Node 4: Connection to 1 (MGM) is connected
Node 4: Connection to 2 (MGM) is trying to connect
Node 4: Connection to 3 (DB) is connected
Node 4: Connection to 4 (DB) does nothing
Node 4: Connection to 7 (API) is connected
Node 4: Connection to 8 (API) is connected
Node 4: Connection to 9 (API) is trying to connect
Node 4: Connection to 10 (API) is trying to connect
Node 4: Connection to 11 (API) is trying to connect

附加信息。  该消息is trying to connect实际上意味着有问题的节点没有启动。[api]当配置的文件节点中有未使用或 [mysql]部分 时，也可以看到config.ini这一点，即当有用于 API 或 SQL 节点的备用插槽时。