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Nosql Mongodb之旅(29)—MongoDB新增Shard Server

2020-05-30 NoSQL 前端之家

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1、启动一个新Shard Server 进程

[plain]view plaincopy 
   
 [root@localhost~]#mkdir/data/shard/s2
 [root@localhost~]#/Apps/mongo/bin/mongod--shardsvr--port20002--dbpath/data/shard/s2
 --fork--logpath/data/shard/log/s2.log--directoryperdb
 alloutputgoingto:/data/shard/log/s2.log
 forkedprocess:6772

2、配置新Shard Server

[root@localhost~]#/Apps/mongo/bin/mongoadmin--port40000

MongoDBshellversion:1.8.1
connectingto:127.0.0.1:40000/admin
>db.runCommand({addshard:"localhost:20002"})
{"shardAdded":"shard0002","ok":1}
>printShardingStatus()
---ShardingStatus---
shardingversion:{"_id":1,"version":3}
shards:
{"_id":"shard0000","host":"localhost:20000"}
{"_id":"shard0001","host":"localhost:20001"}
{"_id":"shard0002","host":"localhost:20002"}--新增ShardServer
databases:
{"_id":"admin","partitioned":false,"primary":"config"}
{"_id":"test","partitioned":true,"primary":"shard0000"}
test.userschunks:
shard00022
shard000021
shard000121
toomanychunksntoprint,useverboseifyouwanttoforceprint
test.users_2chunks:
shard000146
shard00021
shard000045
toomanychunksntoprint,useverboseifyouwanttoforceprint

3、查看分片表状态，以验证新Shard Server

>usetest

switchedtodbtest
>db.users_2.stats()
{
"sharded":true,
"ns":"test.users_2",
……
"shard0002":{--新的ShardServer已有数据
"ns":"test.users_2",248); line-height:21px; margin:0px!important; padding:0px 3px 0px 10px!important"> "count":21848,108); list-style:decimal-leading-zero outside; color:inherit; line-height:21px; margin:0px!important; padding:0px 3px 0px 10px!important"> "size":2097408,248); line-height:21px; margin:0px!important; padding:0px 3px 0px 10px!important"> "avgObjSize":96,108); list-style:decimal-leading-zero outside; color:inherit; line-height:21px; margin:0px!important; padding:0px 3px 0px 10px!important"> "storageSize":2793472,248); line-height:21px; margin:0px!important; padding:0px 3px 0px 10px!important"> "numExtents":5,108); list-style:decimal-leading-zero outside; color:inherit; line-height:21px; margin:0px!important; padding:0px 3px 0px 10px!important"> "nindexes":1,248); line-height:21px; margin:0px!important; padding:0px 3px 0px 10px!important"> "lastExtentSize":2097152,108); list-style:decimal-leading-zero outside; color:inherit; line-height:21px; margin:0px!important; padding:0px 3px 0px 10px!important"> "paddingFactor":1,248); line-height:21px; margin:0px!important; padding:0px 3px 0px 10px!important"> "flags":1,108); list-style:decimal-leading-zero outside; color:inherit; line-height:21px; margin:0px!important; padding:0px 3px 0px 10px!important"> "totalIndexSize":1277952,248); line-height:21px; margin:0px!important; padding:0px 3px 0px 10px!important"> "indexSizes":{
"_id_":1277952
},108); list-style:decimal-leading-zero outside; color:inherit; line-height:21px; margin:0px!important; padding:0px 3px 0px 10px!important"> "ok":1
}
},248); line-height:21px; margin:0px!important; padding:0px 3px 0px 10px!important"> "ok":1
}
>