GBase 8c教程 启动/停止数据库集群组件

一、语法规则：

数据库集群组件的启动/停止使用命令START/STOP实现，使用语法如下：

1、启动/停止GTM节点：
启动：gha_ctl START gtm name -l dcslist [-c cluster]
停止：gha_ctl STOP gtm name -l dcslist [-c cluster]

2、启动/停止Coordinator节点：
启动：gha_ctl START coordinator name -l dcslist [-c cluster]
停止：gha_ctl STOP coordinator name -l dcslist [-c cluster]

3、启动/停止Datanode节点：
启动：gha_ctl START datanode group name -l dcslist [-c cluster]
停止：gha_ctl STOP datanode group name -l dcslist [-c cluster]

参数说明：

• dcslist为DCS地址，一般情况下可以只列出一个节点地址，其他节点会自动同步消息。为了保证高可用，也可以列出所有节点地址；

• [-c cluster]表示集群名称，为可选字段，缺省默认值gbase8c。

二、操作示例

以启停DN2节点为例，具体操作命令示例：

1、停用DN2节点：

[gbase@localhost deploy]$ /home/gbase/deploy/bin/gha_ctl stop datanode dn2 dn2_1 -l http://192.168.142.211:2379,http://192.168.142.212:2379,http://192.168.142.213:2379

返回操作成功信息：

{
    "ret":0,
    "msg":"Success"
}

2、查询当前Datanode节点状态：

[gbase@localhost deploy]$ /home/gbase/deploy/bin/gha_ctl monitor datanode -l http://192.168.142.211:2379,http://192.168.142.212:2379,http://192.168.142.213:2379

返回DN1、DN3 running状态，DN2 stop状态信息：

{
    "cluster":"gbase8c",
    "datanode":{
        "dn1":[
            {
                "host":"192.168.142.211",
                "port":"5433",
                "restPort":"8011",
                "name":"dn1_1",
                "workDir":"/home/gbase/data/datanode",
                "role":"master",
                "state":"running"
            }
        ],
        "dn2":[
            {
                "host":"192.168.142.212",
                "port":"5433",
                "restPort":"8011",
                "name":"dn2_1",
                "workDir":"/home/gbase/data/datanode",
                "role":"master",
                "state":"stopped"
            }
        ],
        "dn3":[
            {
                "host":"192.168.142.213",
                "port":"5433",
                "restPort":"8011",
                "name":"dn3_1",
                "workDir":"/home/gbase/data/datanode",
                "role":"master",
                "state":"running"
            }
        ]
    }
}

3、启动DN2节点：

[gbase@localhost deploy]$ /home/gbase/deploy/bin/gha_ctl start datanode dn2 dn2_1 -l http://192.168.142.211:2379,http://192.168.142.212:2379,http://192.168.142.213:2379

返回操作成功信息：

{
    "ret":0,
    "msg":"Success"
}

4、查询当前Datanode节点状态：

[gbase@localhost deploy]$ /home/gbase/deploy/bin/gha_ctl monitor datanode -l http://192.168.142.211:2379,http://192.168.142.212:2379,http://192.168.142.213:237

返回DN1、DN2、DN3均running状态：

{
    "cluster":"gbase8c",
    "datanode":{
        "dn1":[
            {
                "host":"192.168.142.211",
                "port":"5433",
                "restPort":"8011",
                "name":"dn1_1",
                "workDir":"/home/gbase/data/datanode",
                "role":"master",
                "state":"running"
            }
        ],
        "dn2":[
            {
                "host":"192.168.142.212",
                "port":"5433",
                "restPort":"8011",
                "name":"dn2_1",
                "workDir":"/home/gbase/data/datanode",
                "role":"master",
                "state":"running"
            }
        ],
        "dn3":[
            {
                "host":"192.168.142.213",
                "port":"5433",
                "restPort":"8011",
                "name":"dn3_1",
                "workDir":"/home/gbase/data/datanode",
                "role":"master",
                "state":"running"
            }
        ]
    }
}