怎么样使用mongodb添加arbiter节点?

怎么样使用mongodb添加arbiter节点?

前言

在创建mongodb的replica set的时候,只是做成了1主2从,没有做成1主1从1仲裁。这我们将一个几点从replica set中删除,再以仲裁节点的身份加入到replica set中:

1.初始状态:

shard1ReplSet:PRIMARY> rs.status();rs.status();
{
 "set" : "shard1ReplSet",
 "date" : ISODate("2017-02-21T07:48:03.058Z"),
 "myState" : 1,
 "term" : NumberLong(1),
 "heartbeatIntervalMillis" : NumberLong(2000),
 "optimes" : {
  "lastCommittedOpTime" : {
   "ts" : Timestamp(0, 0),
   "t" : NumberLong(-1)
  },
  "appliedOpTime" : {
   "ts" : Timestamp(1487663274, 1),
   "t" : NumberLong(1)
  },
  "durableOpTime" : {
   "ts" : Timestamp(1487587982, 1),
   "t" : NumberLong(-1)
  }
 },
 "members" : [
  {
   "_id" : 0,
   "name" : "10.13.0.130:22001",
   "health" : 1,
   "state" : 1,
   "stateStr" : "PRIMARY",
   "uptime" : 76672,
   "optime" : {
    "ts" : Timestamp(1487663274, 1),
    "t" : NumberLong(1)
   },
   "optimeDate" : ISODate("2017-02-21T07:47:54Z"),
   "electionTime" : Timestamp(1487587993, 1),
   "electionDate" : ISODate("2017-02-20T10:53:13Z"),
   "configVersion" : 1,
   "self" : true
  },
  {
   "_id" : 1,
   "name" : "10.13.0.131:22001",
   "health" : 1,
   "state" : 2,
   "stateStr" : "SECONDARY",
   "uptime" : 75300,
   "optime" : {
    "ts" : Timestamp(1487663274, 1),
    "t" : NumberLong(1)
   },
   "optimeDurable" : {
    "ts" : Timestamp(1487587982, 1),
    "t" : NumberLong(-1)
   },
   "optimeDate" : ISODate("2017-02-21T07:47:54Z"),
   "optimeDurableDate" : ISODate("2017-02-20T10:53:02Z"),
   "lastHeartbeat" : ISODate("2017-02-21T07:48:02.150Z"),
   "lastHeartbeatRecv" : ISODate("2017-02-21T07:48:02.215Z"),
   "pingMs" : NumberLong(0),
   "syncingTo" : "10.13.0.132:22001",
   "configVersion" : 1
  },
  {
   "_id" : 2,
   "name" : "10.13.0.132:22001",
   "health" : 1,
   "state" : 2,
   "stateStr" : "SECONDARY",
   "uptime" : 75300,
   "optime" : {
    "ts" : Timestamp(1487663274, 1),
    "t" : NumberLong(1)
   },
   "optimeDurable" : {
    "ts" : Timestamp(1487587982, 1),
    "t" : NumberLong(-1)
   },
   "optimeDate" : ISODate("2017-02-21T07:47:54Z"),
   "optimeDurableDate" : ISODate("2017-02-20T10:53:02Z"),
   "lastHeartbeat" : ISODate("2017-02-21T07:48:02.889Z"),
   "lastHeartbeatRecv" : ISODate("2017-02-21T07:48:01.503Z"),
   "pingMs" : NumberLong(0),
   "syncingTo" : "10.13.0.130:22001",
   "configVersion" : 1
  }
 ],
 "ok" : 1
}
shard1ReplSet:PRIMARY> 
shard1ReplSet:PRIMARY> 
shard1ReplSet:PRIMARY> 
shard1ReplSet:PRIMARY> 

2.删除节点:

shard1ReplSet:PRIMARY> rs.remove("10.13.0.132:22001"); rs.remove("10.13.0.132:22001"); 
{ "ok" : 1 }
shard1ReplSet:PRIMARY> rs.status();rs.status();
{
 "set" : "shard1ReplSet",
 "date" : ISODate("2017-02-21T07:50:52.934Z"),
 "myState" : 1,
 "term" : NumberLong(1),
 "heartbeatIntervalMillis" : NumberLong(2000),
 "optimes" : {
  "lastCommittedOpTime" : {
   "ts" : Timestamp(0, 0),
   "t" : NumberLong(-1)
  },
  "appliedOpTime" : {
   "ts" : Timestamp(1487663447, 1),
   "t" : NumberLong(1)
  },
  "durableOpTime" : {
   "ts" : Timestamp(1487587982, 1),
   "t" : NumberLong(-1)
  }
 },
 "members" : [
  {
   "_id" : 0,
   "name" : "10.13.0.130:22001",
   "health" : 1,
   "state" : 1,
   "stateStr" : "PRIMARY",
   "uptime" : 76841,
   "optime" : {
    "ts" : Timestamp(1487663447, 1),
    "t" : NumberLong(1)
   },
   "optimeDate" : ISODate("2017-02-21T07:50:47Z"),
   "electionTime" : Timestamp(1487587993, 1),
   "electionDate" : ISODate("2017-02-20T10:53:13Z"),
   "configVersion" : 2,
   "self" : true
  },
  {
   "_id" : 1,
   "name" : "10.13.0.131:22001",
   "health" : 1,
   "state" : 2,
   "stateStr" : "SECONDARY",
   "uptime" : 75470,
   "optime" : {
    "ts" : Timestamp(1487663447, 1),
    "t" : NumberLong(1)
   },
   "optimeDurable" : {
    "ts" : Timestamp(1487587982, 1),
    "t" : NumberLong(-1)
   },
   "optimeDate" : ISODate("2017-02-21T07:50:47Z"),
   "optimeDurableDate" : ISODate("2017-02-20T10:53:02Z"),
   "lastHeartbeat" : ISODate("2017-02-21T07:50:51.182Z"),
   "lastHeartbeatRecv" : ISODate("2017-02-21T07:50:52.212Z"),
   "pingMs" : NumberLong(0),
   "configVersion" : 2
  }
 ],
 "ok" : 1
}
shard1ReplSet:PRIMARY> 
shard1ReplSet:PRIMARY> 
shard1ReplSet:PRIMARY> 

3.添加成arbiter节点:

shard1ReplSet:PRIMARY> rs.addArb("10.13.0.132:22001");rs.addArb("10.13.0.132:22001");
{ "ok" : 1 }
shard1ReplSet:PRIMARY> 
shard1ReplSet:PRIMARY> rs.status();rs.status();
{
 "set" : "shard1ReplSet",
 "date" : ISODate("2017-02-21T07:54:05.161Z"),
 "myState" : 1,
 "term" : NumberLong(1),
 "heartbeatIntervalMillis" : NumberLong(2000),
 "optimes" : {
  "lastCommittedOpTime" : {
   "ts" : Timestamp(0, 0),
   "t" : NumberLong(-1)
  },
  "appliedOpTime" : {
   "ts" : Timestamp(1487663637, 1),
   "t" : NumberLong(1)
  },
  "durableOpTime" : {
   "ts" : Timestamp(1487587982, 1),
   "t" : NumberLong(-1)
  }
 },
 "members" : [
  {
   "_id" : 0,
   "name" : "10.13.0.130:22001",
   "health" : 1,
   "state" : 1,
   "stateStr" : "PRIMARY",
   "uptime" : 77034,
   "optime" : {
    "ts" : Timestamp(1487663637, 1),
    "t" : NumberLong(1)
   },
   "optimeDate" : ISODate("2017-02-21T07:53:57Z"),
   "electionTime" : Timestamp(1487587993, 1),
   "electionDate" : ISODate("2017-02-20T10:53:13Z"),
   "configVersion" : 3,
   "self" : true
  },
  {
   "_id" : 1,
   "name" : "10.13.0.131:22001",
   "health" : 1,
   "state" : 2,
   "stateStr" : "SECONDARY",
   "uptime" : 75662,
   "optime" : {
    "ts" : Timestamp(1487663637, 1),
    "t" : NumberLong(1)
   },
   "optimeDurable" : {
    "ts" : Timestamp(1487587982, 1),
    "t" : NumberLong(-1)
   },
   "optimeDate" : ISODate("2017-02-21T07:53:57Z"),
   "optimeDurableDate" : ISODate("2017-02-20T10:53:02Z"),
   "lastHeartbeat" : ISODate("2017-02-21T07:54:03.210Z"),
   "lastHeartbeatRecv" : ISODate("2017-02-21T07:54:02.211Z"),
   "pingMs" : NumberLong(0),
   "configVersion" : 3
  },
  {
   "_id" : 2,
   "name" : "10.13.0.132:22001",
   "health" : 1,
   "state" : 7,
   "stateStr" : "ARBITER",
   "uptime" : 5,
   "lastHeartbeat" : ISODate("2017-02-21T07:54:03.214Z"),
   "lastHeartbeatRecv" : ISODate("2017-02-21T07:54:02.274Z"),
   "pingMs" : NumberLong(0),
   "configVersion" : 3
  }
 ],
 "ok" : 1
}
shard1ReplSet:PRIMARY> 

注1: mongodb 3.4之后,虽然要求config server为replica set,但是不支持arbiter。

添加的时候,会报错:

cfgReplSet:PRIMARY> rs.addArb("10.13.0.132:21000");rs.addArb("10.13.0.132:21000");
{
 "ok" : 0,
 "errmsg" : "Arbiters are not allowed in replica set configurations being used for config servers",
 "code" : 103,
 "codeName" : "NewReplicaSetConfigurationIncompatible"
}
cfgReplSet:PRIMARY> 

注2:rs.reconfig()也可以进行操作,效果类似re.remove+rs.addArb,详见:mongodb官方文档- Remove Members from Replica Set

总结

以上就是关于mongodb添加arbiter节点的全部内容了,希望本文的内容对大家的学习或者工作能带来一定的帮助,如果有疑问大家可以留言交流。