监控集群

• 连接到协调节点

$ /opt/sequoiadb/bin/sdb
> var db = new Sdb( "localhost", 11810 )

• 得到集群状态

> db.listReplicaGroups()
{
  "Group": [
    {
      "dbpath": "/opt/sequoiadb/database/cata/11800",
      "HostName": "hostname1",
      "Service": [
        ...
      ],
      "NodeID": 1
    },
    {
      "HostName": "hostname2",
      "dbpath": "/opt/sequoiadb/database/cata/11800",
      "Service": [
        ...
      ],
      "NodeID": 2
    },
    {
      "HostName": "hostname3",
      "dbpath": "/opt/sequoiadb/database/cata/11800",
      "Service": [
        ...
      ],
      "NodeID": 3
    }
  ],
  "GroupID": 1,
  "GroupName": "SYSCatalogGroup",
  "PrimaryNode": 1,
  "Role": 2,
  "Status": 1,
  "Version": 3,
  "_id": {
    "$oid": "558b9264de349a1b87451a1d"
  }
}
{
  "Group": [
    {
      "HostName": "hostname1",
      "dbpath": "/opt/sequoiadb/database/data/21100",
      "Service": [
        ...
      ],
      "NodeID": 1000
    },
    {
      "HostName": "hostname2",
      "dbpath": "/opt/sequoiadb/database/data/21100",
      "Service": [
        ...
      ],
      "NodeID": 1001
    },
    {
      "HostName": "hostname3",
      "dbpath": "/opt/sequoiadb/database/data/21100",
      "Service": [
        ...
      ],
      "NodeID": 1002
    }
  ],
  "GroupID": 1000,
  "GroupName": "group1",
  "PrimaryNode": 1001,
  "Role": 0,
  "Status": 1,
  "Version": 4,
  "_id": {
    "$oid": "558b9295de349a1b87451a21"
  }
}
...