{
"_id" : 2,
"name" : "mongodb3.example.net:27017",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 638,
"optime" : Timestamp(1374142698, 1),
"optimeDate" : ISODate("2013-07-18T10:18:18Z"),
"lastHeartbeat" : ISODate("2013-07-18T10:28:56Z"),
"lastHeartbeatRecv" : ISODate("2013-07-18T10:28:56Z"),
"pingMs" : 0,
"syncingTo" : "mongodb1.example.net:27017"
}
],
"ok" : 1
}
test:PRIMARY>
3. 故障切换
假设224为Primary，其它为Secondary，则可以使用mongo shell连接224，看到下面结果
[root@MongodbF-B App]# /App/mongo/bin/mongo 192.168.155.224
MongoDB shell version: 2.4.5
connecting to: 192.168.155.224/test
Welcome to the MongoDB shell.
For interactive help, type "help".
For more comprehensive documentation, see
http://docs.mongodb.org/
Questions Try the support group
http://groups.google.com/group/mongodb-user
test:PRIMARY> rs.isMaster()
{
"setName" : "test",
"ismaster" : true,
"secondary" : false,
"hosts" : [
"mongodb1.example.net:27017",
"mongodb3.example.net:27017",
"mongodb2.example.net:27017"
],
"primary" : "mongodb1.example.net:27017",
"me" : "mongodb1.example.net:27017",
"maxBsonObjectSize" : 16777216,
"maxMessageSizeBytes" : 48000000,
"localTime" : ISODate("2013-07-18T10:30:33.734Z"),
"ok" : 1
}
test:PRIMARY>
同时可以连接225查看状态；
[root@MongodbF-C App]# /App/mongo/bin/mongo 192.168.155.225
MongoDB shell version: 2.4.5
connecting to: 192.168.155.225/test
Welcome to the MongoDB shell.
For interactive help, type "help".
For more comprehensive documentation, see
http://docs.mongodb.org/
Questions Try the support group
http://groups.google.com/group/mongodb-user
test:SECONDARY> rs.isMaster()
{
"setName" : "test",
"ismaster" : false,
"secondary" : true,
"hosts" : [
"mongodb2.example.net:27017",
"mongodb3.example.net:27017",
"mongodb1.example.net:27017"
],
"primary" : "mongodb1.example.net:27017",
"me" : "mongodb2.example.net:27017",
"maxBsonObjectSize" : 16777216,
"maxMessageSizeBytes" : 48000000,
"localTime" : ISODate("2013-07-18T10:32:03.170Z"),
"ok" : 1
}
test:SECONDARY>
我们停止224的mongod，然后发现已经mongo shell连接不上，而通过另外两个成员可以看到副本集的状态：
[root@MongodbF-A etc]# kill 8513
[root@MongodbF-A etc]# /App/mongo/bin/mongo 192.168.155.224
MongoDB shell version: 2.4.5
connecting to: 192.168.155.224/test
Thu Jul 18 18:38:08.920 java script execution failed: Error: couldn't connect to server 192.168.155.224:27017 at src/mongo/shell/mongo.js:L114
exception: connect failed
[root@MongodbF-A etc]#
停掉了；
然后查看225，226状态；
[root@MongodbF-C App]# /App/mongo/bin/mongo 192.168.155.226
MongoDB shell version: 2.4.5
connecting to: 192.168.155.226/test
test:PRIMARY> rs.status()
{
"set" : "test",
"date" : ISODate("2013-07-18T10:39:19Z"),
"myState" : 1,
"mem