MongoDB运行时添加分片复制集
基于"Mongodb集群配置(sharding with replica set)"的集群，尝试在Mongodb集群运行时动态添加分片复制集。
（1）启动复制集节点
分别执行如下3个批处理文件来启动3个Mongod进程，127.0.0.1:36000和127.0.0.1:36001以及127.0.0.1:36002.
批处理文件startShardD_0.bat：
cd d:/mongodb-win32-i386-1.8.0/bin
call mongod.exe --logpath d:/mongodb-win32-i386-1.8.0/logs/d/r0.log
--logappend --dbpath d:/mongodb-win32-i386-1.8.0/data/d/r0 --port
36000 --shardsvr --replSet setD --rest --oplogSize 64
批处理文件startShardD_1.bat：
cd d:/mongodb-win32-i386-1.8.0/bin
call mongod.exe --logpath d:/mongodb-win32-i386-1.8.0/logs/d/r1.log
--logappend --dbpath d:/mongodb-win32-i386-1.8.0/data/d/r1 --port
36001 --shardsvr --replSet setD --rest --oplogSize 64
批处理文件startShardD_2.bat：
cd d:/mongodb-win32-i386-1.8.0/bin
call mongod.exe --logpath d:/mongodb-win32-i386-1.8.0/logs/d/r2.log
--logappend --dbpath d:/mongodb-win32-i386-1.8.0/data/d/r2 --port
36002 --shardsvr --replSet setD --rest --oplogSize 64
（2）配置复制集
D:/mongodb-win32-i386-1.8.0/cmd>cd
d:/mongodb-win32-i386-1.8.0/bin
D:/mongodb-win32-i386-1.8.0/bin>call mongo.exe
127.0.0.1:36000/admin
MongoDB shell version: 1.8.0
connecting to: 127.0.0.1:36000/admin
> cfg = { _id:'setD', members:[
{ _id:0, host:'127.0.0.1:36000' },
{ _id:1, host:'127.0.0.1:36001' },
{ _id:2, host:'127.0.0.1:36002' }...
]};
{
"_id" : "setD",
"members" : [
{
"_id" : 0,
"host" : "127.0.0.1:36000"
},
{
"_id" : 1,
"host" : "127.0.0.1:36001"
},
{
"_id" : 2,
"host" : "127.0.0.1:36002"
}
]
}
> rs.initiate(cfg)
{
"info" : "Config now
saved locally. Should come online in about a minute.",
"ok" : 1
}
>
（3）添加到集群
cd d:/mongodb-win32-i386-1.8.0/bin
call mongo.exe 127.0.0.1:50000/admin
>
db.runCommand({addshard:'setD/127.0.0.1:36000,127.0.0.1:36001,127.0.0.1:36002'})
{ "shardAdded" : "setD", "ok" : 1 }
（4）查看集群分片信息
> db.printShardingStatus()
--- Sharding Status ---
sharding version: { "_id" : 1, "version" : 3 }
shards:
{
"_id" : "ShardSetA",
"host" :
"setA/127.0.0.1:10000,127.0.0.1:10001,127.0.0.1:10002"
}
{
"_id" : "ShardSetB",
"host" :
"setB/127.0.0.1:20000,127.0.0.1:20001,127.0.0.1:20002"
}
{
"_id" : "ShardSetC",
"host" :
"setC/127.0.0.1:30000,127.0.0.1:30001,127.0.0.1:30002"
}
{
"_id" : "setD",
"host" :
"setD/127.0.0.1:36000,127.0.0.1:36001,127.0.0.1:36002"
}
databases:
{ "_id" : "admin",
"partitioned" : false, "primary" : "config" }
{ "_id" : "wlb",
"partitioned" : true, "primary" : "ShardSetA" }
wlb.wlb_orders chunks:
ShardSetB 5
ShardSetA 4
ShardSetC 5
{ "order_id" : { $minKey : 1 } } -->> { "order_id" :
NumberLong(1) } on : ShardSetB { "t" : 5000, "i" : 1 }
{ "order_id" : NumberLong(1) } -->> { "order_id" :
NumberLong(19943) } on : ShardSetA { "t" : 8000, "i" : 1 }
{ "order_id" : NumberLong(19943) } -->> { "order_id" :
NumberLong(37015) } on : ShardSetC { "t" : 7000, "i" : 1 }
{ "order_id" : NumberLong(37015) } -->> { "order_id" :
NumberLong(54080) } on : ShardSetB { "t" : 4000, "i" : 2 }
{ "order_id" : NumberLong(54080) } -->> { "order_id" :
NumberLong(71148) } on : ShardSetB { "t" : 4000, "i" : 4 }
{ "order_id" : NumberLong(71148) } -->> { "order_id" :
NumberLong(88201) } on : ShardSetA { "t" : 5000, "i" : 2 }
{ "order_id" : NumberLong(88201) } -->> { "order_id" :
NumberLong(105259) } on : ShardSetC { "t" : 6000, "i" : 2 }
{ "order_id" : NumberLong(105259) } -->> { "order_id" :
NumberLong(122284) } on : ShardSetC { "t" : 6000, "i" : 4 }
{ "order_id" : NumberLong(122284) } -->> { "order_id" :
NumberLong(139303) } on : ShardSetC { "t" : 6000, "i" : 6 }
{ "order_id" : NumberLong(139303) } -->> { "order_id" :
NumberLong(173354) } on : ShardSetC { "t" : 6000, "i" : 8 }
{ "order_id" : NumberLong(173354) } -->> { "order_id" :
NumberLong(207403) } on : ShardSetA { "t" : 7000, "i" : 2 }
{ "order_id" : NumberLong(207403) } -->> { "order_id" :
NumberLong(241449) } on : ShardSetA { "t" : 7000, "i" : 4 }
{ "order_id" : NumberLong(241449) } -->> { "order_id" :
NumberLong(275497) } on : ShardSetB { "t" : 8000, "i" : 2 }
{ "order_id" : NumberLong(275497) } -->> { "order_id" : {
$maxKey : 1 } } on : ShardSetB { "t" : 8000, "i" : 3 }
{ "_id" : "adimin",
"partitioned" : false, "primary" : "ShardSetA" }
至此，复制集setD就作为一个分片加入到集群中去了。
MongoDB运行时添加分片复制集
