mongodb在线添加移除新的分片复制集.docx

1、mongodb在线添加移除新的分片复制集前面添加新的分片复制集因为版本不一致无法兼容，见：1、在master2上建立3个mongodb 准备3个mongodb进程数，先准备数据目录和日志目录： mkdir -p /data/mongodb/shard37017 mkdir -p /data/mongodb/shard37027 mkdir -p /data/mongodb/shard37037 mkdir -p /data/mongodb/logs 3个启动命令： /usr/local/mongodb-linux-x86_64-2.4.4/bin/mongod -shardsvr -replS

2、et shard3 -port 37017 -dbpath /data/mongodb/shard37017 -oplogSize 2048 -logpath /data/mongodb/logs/shard_m2_37017.log -logappend -fork /usr/local/mongodb-linux-x86_64-2.4.4/bin/mongod -shardsvr -replSet shard3 -port 37027 -dbpath /data/mongodb/shard37027 -oplogSize 2048 -logpath /data/mongodb/logs/s

3、hard_m2_37027.log -logappend -fork /usr/local/mongodb-linux-x86_64-2.4.4/bin/mongod -shardsvr -replSet shard3 -port 37037 -dbpath /data/mongodb/shard37037 -oplogSize 2048 -logpath /data/mongodb/logs/shard_m2_37037.log -logappend -fork PS：启动mongodb进程可能会卡住，比较慢，不过需要耐心等待，ps -eaf|grep mongodb可能会有好几一个一样的进

4、程在跑（比如37037端口），不过这只是暂时的，没有关系，等一会启动完成了后，就会只有一个37037的端口在运行：# 会有2个37037的端口在运行着rootdb_master_2 # ps -eaf|grep mongo root 52721 752 0 21:27 pts/0 00:00:00 su - mongodb mongodb 52722 52721 0 21:27 pts/0 00:00:00 -bash mongodb 56368 1 0 21:36 ? 00:00:00 /usr/local/mongodb-linux-x86_64-2.4.4/bin/mongod -sha

5、rdsvr -replSet shard3 -port 37017 -dbpath /data/mongodb/shard37017 -oplogSize 2048 -logpath /data/mongodb/logs/shard_m2_37017.log -logappend -fork mongodb 56421 1 0 21:36 ? 00:00:00 /usr/local/mongodb-linux-x86_64-2.4.4/bin/mongod -shardsvr -replSet shard3 -port 37027 -dbpath /data/mongodb/shard3702

6、7 -oplogSize 2048 -logpath /data/mongodb/logs/shard_m2_37027.log -logappend -fork mongodb 56473 52722 1 21:36 pts/0 00:00:00 /usr/local/mongodb-linux-x86_64-2.4.4/bin/mongod -shardsvr -replSet shard3 -port 37037 -dbpath /data/mongodb/shard37037 -oplogSize 2048 -logpath /data/mongodb/logs/shard_m2_37

7、037.log -logappend -fork mongodb 56474 56473 0 21:36 ? 00:00:00 /usr/local/mongodb-linux-x86_64-2.4.4/bin/mongod -shardsvr -replSet shard3 -port 37037 -dbpath /data/mongodb/shard37037 -oplogSize 2048 -logpath /data/mongodb/logs/shard_m2_37037.log -logappend -fork mongodb 56475 56474 17 21:36 ? 00:00

8、:01 /usr/local/mongodb-linux-x86_64-2.4.4/bin/mongod -shardsvr -replSet shard3 -port 37037 -dbpath /data/mongodb/shard37037 -oplogSize 2048 -logpath /data/mongodb/logs/shard_m2_37037.log -logappend -fork root 56489 55041 0 21:36 pts/1 00:00:00 grep mongo rootdb_master_2 # # 过了一段时间后，等项目启动完后，进程数目变成了正常

9、的3个了。 rootdb_master_2 # rootdb_master_2 # ps -eaf|grep mongo root 52721 752 0 21:27 pts/0 00:00:00 su - mongodb mongodb 52722 52721 0 21:27 pts/0 00:00:00 -bash mongodb 56368 1 0 21:36 ? 00:00:03 /usr/local/mongodb-linux-x86_64-2.4.4/bin/mongod -shardsvr -replSet shard3 -port 37017 -dbpath /data/mon

10、godb/shard37017 -oplogSize 2048 -logpath /data/mongodb/logs/shard_m2_37017.log -logappend -fork mongodb 56421 1 0 21:36 ? 00:00:03 /usr/local/mongodb-linux-x86_64-2.4.4/bin/mongod -shardsvr -replSet shard3 -port 37027 -dbpath /data/mongodb/shard37027 -oplogSize 2048 -logpath /data/mongodb/logs/shard

11、_m2_37027.log -logappend -fork mongodb 56475 1 0 21:36 ? 00:00:05 /usr/local/mongodb-linux-x86_64-2.4.4/bin/mongod -shardsvr -replSet shard3 -port 37037 -dbpath /data/mongodb/shard37037 -oplogSize 2048 -logpath /data/mongodb/logs/shard_m2_37037.log -logappend -fork root 61460 55041 0 21:49 pts/1 00:

12、00:00 grep mongo rootdb_master_2 # 2、初始化新的分片集 # 设置新的分片 config = _id:shard3, members: _id:0,host:mongodb_shard3:37017,priority:1, _id:1,host:mongodb_shard3:37027,priority:2, _id:2,host:mongodb_shard3:37037,arbiterOnly:true ; # 初始化副本集 rs.initiate(config); # 执行过程如下： mongodbdb_master_2 $ /usr/local/mong

13、odb-linux-x86_64-2.4.4/bin/mongo mongodb_shard3:37017/admin MongoDB shell version: 2.4.4 connecting to: mongodb_shard3:37017/admin Server has startup warnings: 2016-07-08T17:39:51.888+0800 I CONTROL initandlisten 2016-07-08T17:39:51.888+0800 I CONTROL initandlisten * WARNING: /sys/kernel/mm/transpar

14、ent_hugepage/enabled is always. 2016-07-08T17:39:51.888+0800 I CONTROL initandlisten * We suggest setting it to never 2016-07-08T17:39:51.888+0800 I CONTROL initandlisten 2016-07-08T17:39:51.888+0800 I CONTROL initandlisten * WARNING: /sys/kernel/mm/transparent_hugepage/defrag is always. 2016-07-08T

15、17:39:51.888+0800 I CONTROL initandlisten * We suggest setting it to never 2016-07-08T17:39:51.888+0800 I CONTROL initandlisten config = _id:shard3, members: . _id:0,host:mongodb_shard3:37017,priority:1, . _id:1,host:mongodb_shard3:37027,priority:2, . _id:2,host:mongodb_shard3:37037,arbiterOnly:true

16、 . . ; _id : shard3, members : _id : 0, host : mongodb_shard3:37017, priority : 1 , _id : 1, host : mongodb_shard3:37027, priority : 2 , _id : 2, host : mongodb_shard3:37037, arbiterOnly : true rs.initiate(config); ok : 1 shard3:OTHER 3、mongos上在线添加新的分片shard3添加命令：db.runCommand( addshard : shard3/mong

17、odb_shard3:37017,mongodb_shard3:37027,mongodb_shard3:37037); mongodbdb_m1_slave_1 logs$ /usr/local/mongodb-linux-x86_64-2.4.4/bin/mongo mongodbs1:30000/admin MongoDB shell version: 2.4.4 connecting to: localhost:30000/admin mongos db.runCommand( addshard : shard3/mongodb_shard3:37017,mongodb_shard3:

18、37027,mongodb_shard3:37037); shardAdded : shard1, ok : 1 mongos db.runCommand( addShard: shard3/mongodb_shard3:37017,mongodb_shard3:37027,mongodb_shard3:37037, maxSize: 0, name: shard3 ); sh.addShard(shard3/mongodb_shard3:37017,mongodb_shard3:37027,mongodb_shard3:37037) 执行过程如下：mongodbdb_master_2 $ /

19、usr/local/mongodb-linux-x86_64-2.4.4/bin/mongo mongodbs1:30000/adminMongoDB shell version: 2.4.4connecting to: mongodbs1:30000/adminmongos db.runCommand( addshard : shard3/mongodb_shard3:37017,mongodb_shard3:37027,mongodb_shard3:37037); ok : 0, errmsg : couldnt connect to new shard socket exception

20、CONNECT_ERROR for shard3/mongodb_shard3:37017,mongodb_shard3:37027,mongodb_shard3:37037mongos db.runCommand( removeShard : shard3 ); msg : draining started successfully, state : started, shard : shard3, ok : 1mongos 4、添加移除分片过程添加shard3报错：mongos db.runCommand( addshard : shard3/mongodb_shard3:37017,mo

21、ngodb_shard3:37027,mongodb_shard3:37037); ok : 0, errmsg : E11000 duplicate key error index: config.shards.$_id_ dup key: : shard3 mongos 查看下当前的sharding信息：mongos db.printShardingStatus();- Sharding Status - sharding version: _id : 1, version : 3, minCompatibleVersion : 3, currentVersion : 4, cluster

22、Id : ObjectId(56eec856472f21af28119fdc) shards: _id : shard1, host : shard1/192.168.3.62:27017,192.168.3.63:27017 _id : shard2, host : shard2/192.168.3.62:27018,192.168.3.63:27018 _id : shard3, draining : true, host : shard3/mongodb_shard3:37017,mongodb_shard3:37027 databases: _id : admin, partition

23、ed : false, primary : config _id : report, partitioned : true, primary : shard2 report.print shard key: _id : 1 chunks: shard1 1 shard2 1 _id : $minKey : 1 - _id : ObjectId(5517aac945ce6df1bdf8a508) on : shard1 t : 2, i : 0 _id : ObjectId(5517aac945ce6df1bdf8a508) - _id : $maxKey : 1 on : shard2 t :

24、 2, i : 1 _id : screen, partitioned : true, primary : shard2 _id : search, partitioned : true, primary : shard2 _id : traffice, partitioned : true, primary : shard2 _id : wifi, partitioned : true, primary : shard2 _id : nagios, partitioned : true, primary : shard2 nagios.last_primary_server shard ke

25、y: _id : 1 chunks: shard2 1 _id : $minKey : 1 - _id : $maxKey : 1 on : shard2 t : 1, i : 0 _id : office, partitioned : true, primary : shard1 office.guard shard key: _id : 1 chunks: shard2 1 shard1 1 _id : $minKey : 1 - _id : ObjectId(554dc72f45ce6df1be127ddc) on : shard2 t : 2, i : 0 _id : ObjectId

26、(554dc72f45ce6df1be127ddc) - _id : $maxKey : 1 on : shard1 t : 2, i : 1 _id : receivereceiptdata, partitioned : true, primary : shard2 _id : test, partitioned : false, primary : shard2 _id : app, partitioned : false, primary : shard2 _id : ibeacon, partitioned : false, primary : shard2 _id : leadvid

27、eo, partitioned : false, primary : shard2 _id : parking, partitioned : false, primary : shard2 _id : pos, partitioned : false, primary : shard2 _id : pv, partitioned : false, primary : shard1 _id : im, partitioned : false, primary : shard2 _id : queue, partitioned : false, primary : shard2 _id : rec

28、eiveposinfodata, partitioned : false, primary : shard2 _id : db, partitioned : false, primary : shard2 _id : ibeancon, partitioned : false, primary : shard2 看到还有shard3的信息，再移除remove一次试试看：mongos db.runCommand( removeShard : shard3 ); msg : removeshard completed successfully, state : completed, shard : shard3, ok : 1mongos 再查看Shard信息，没有了shard3的信息了mongos db.printShardingStatus();- Sharding Status - sharding version: