MongoDB 分片(Cluster)
MongoDB 分片(Cluster)
基本环境:
由于资源紧张,只有3台虚拟机的关系,只做两个replicaSet,每台机器配置分别如下:
10.10.1.55这台机器安装 Primary1,configServer1, Arbiter1
10.10.1.56 安装 Primary2,configServer2, Arbiter2
10.10.1.57 安装 Secondary1,Secondary2,configServer3,mongos
1.55机器的配置文件如下:
Primary1的conf文件:
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dbpath= /data/mongodb/rs0_0
logpath= /data/mongodb/log/rs0_0 .log
logappend= true
port=40000
bind_ip=192.168.11.55,10.10.1.55
oplogSize=10000
fork= true
journal = true
#noprealloc = true
replSet=rs0
directoryperdb= true
|
Arbiter1的配置文件:
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dbpath= /data/mongodb/rs0_arbiter
logpath= /data/mongodb/log/rs0_arbiter .log
logappend= true
port=40002
bind_ip=192.168.11.55,10.10.1.55
oplogSize=10000
fork= true
journal = true
#noprealloc = true
replSet=rs0
directoryperdb= true
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ConfigServer1的配置文件:
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dbpath= /data/mongodb/rs0_conf
logpath= /data/mongodb/log/rs0_conf .log
logappend= true
port=40006
bind_ip=192.168.11.55,10.10.1.55
fork= true
journal = true
#noprealloc = true
configsvr= true
directoryperdb= true
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分别通过mongod --config filename 来启动不同的mongo 进程,成功启动后可以通过netstat 查看在1.55 机器上分别分配了Primary1端口:40000,Arbiter1端口:40002,configureServer1端口:40006
1.56机器的配置:
Primary2的配置文件:
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dbpath= /data/mongodb/rs1_primary
logpath= /data/mongodb/log/rs1_p .log
logappend= true
bind_ip=192.168.11.56,10.10.1.56
directoryperdb= true
port=40003
oplogSize=10000
fork= true
journal = true
noprealloc = true
replSet=rs1
|
Arbiter2配置文件:
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dbpath= /data/mongodb/rs1_arbiter
logpath= /data/mongodb/log/rs1_a .log
logappend= true
bind_ip=192.168.11.56,10.10.1.56
directoryperdb= true
port=40005
oplogSize=10000
fork= true
journal = true
noprealloc = true
replSet=rs1
|
ConfigureServer2配置文件:
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dbpath= /data/mongodb/rs1_conf
logpath= /data/mongodb/log/rs1_conf .log
logappend= true
bind_ip=192.168.11.56,10.10.1.56
directoryperdb= true
port=40007
oplogSize=10000
fork= true
journal = true
noprealloc = true
configsvr= true
|
分别通过mongod --config filename 来启动不同的mongo 进程,成功启动后可以通过netstat 查看在1.55 机器上分别分配了Primary2端口:40003,Arbiter2端口:40005,configureServer2端口:40007
1.56机器的配置:
rs0_Secondary1配置:
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dbpath= /data/mongodb/rs0_secondary1
logpath= /data/mongodb/log/rs0_secondary1 .log
logappend= true
port=40001
bind_ip=192.168.11.57,10.10.1.57
oplogSize=10000
fork= true
journal = true
#noprealloc = true
replSet=rs0
directoryperdb= true
|
rs1_Secondary1配置:
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dbpath= /data/mongodb/rs1_secondary1
logpath= /data/mongodb/log/rs1_secondary1 .log
logappend= true
bind_ip=192.168.11.57,10.10.1.57
directoryperdb= true
port=40004
oplogSize=10000
fork= true
journal = true
noprealloc = true
replSet=rs1
|
configureServer3配置:
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dbpath= /data/mongodb/confSvr3
logpath= /data/mongodb/log/conf3 .log
logappend= true
bind_ip=192.168.11.57,10.10.1.57
directoryperdb= true
port=40008
oplogSize=10000
fork= true
journal = true
configsvr= true
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mongos 配置:(启动mongos路由器要注意多台服务器时间必须要同步,否则出现错误)
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logpath= /data/mongodb/log/mongos .log
port = 40009
configdb=10.10.1.55:40006,10.10.1.56:40007,10.10.1.57:40008
fork = true
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分别通过mongod --config filename 来启动不同的mongo 进程,成功启动后可以通过netstat 查看在1.55 机器上分别分配了rs0_secondary1端口:40001,rs1_secondary1端口:40004,configureServer3端口:40008,mongos路由端口:40009
现在用mongo shell登录primary1 配置replicaSet0,步骤如下:
cfg={ "_id" : "rs0", "members" : [ { "_id" : 0, "host" : "10.10.1.55:40000" }, { "_id" : 1, "host" : "10.10.1.57:40001" } ] }
rs.initiate(cfg)
rs.status()
rs.addArb("10.10.1.55:40002")
现在用mongo shell登录primary2 配置replicaSet1,步骤如下:
cfg={ "_id" : "rs1", "members" : [ { "_id" : 0, "host" : "10.10.1.56:40003" }, { "_id" : 1, "host" : "10.10.1.57:40004" } ] }
rs.initiate(cfg)
rs.status()
rs.addArb("10.10.1.56:40005")
使用mongo shell登录mongos路由添加分片信息:
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mongo --host 10.10.1.57 --port 40009
mongos> sh.addShard( "rs0/10.10.1.55:40000,10.10.1.57:40001" )
{ "shardAdded" : "rs0" , "ok" : 1 }
mongos> sh.addShard( "rs1/10.10.1.56:40003,10.10.1.57:40004" )
{ "shardAdded" : "rs1" , "ok" : 1 }
mongos> sh.status()
--- Sharding Status ---
sharding version: {
"_id" : 1,
"version" : 4,
"minCompatibleVersion" : 4,
"currentVersion" : 5,
"clusterId" : ObjectId( "561c7bdd4315b18f9862adb4" )
}
shards:
{ "_id" : "rs0" , "host" : "rs0/10.10.1.55:40000,10.10.1.57:40001" }
{ "_id" : "rs1" , "host" : "rs1/10.10.1.56:40003,10.10.1.57:40004" }
databases:
{ "_id" : "admin" , "partitioned" : false , "primary" : "config" }
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现在创建一个新的数据库来测试一下分片:
mongos> use people
switched to db people
mongos> for(var i=1;i<10;i++) db.customers.insert({name:"jordan"+i,country:"American"})
WriteResult({ "nInserted" : 1 })
mongos> for(var i=1;i<10;i++) db.customers.insert({name:"gaga"+i,country:"American"})
WriteResult({ "nInserted" : 1 })
mongos> for(var i=1;i<10;i++) db.customers.insert({name:"ham"+i,country:"UK"})
WriteResult({ "nInserted" : 1 })
mongos> for(var i=1;i<10;i++) db.customers.insert({name:"brown"+i,country:"UK"})
WriteResult({ "nInserted" : 1 })
mongos> for(var i=1;i<10;i++) db.customers.insert({name:"ramda"+i,country:"Malaysia"})
WriteResult({ "nInserted" : 1 })
开始建立分片:
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mongos> db.customers.ensureIndex({country:1,_id:1})
{
"raw" : {
"rs0/10.10.1.55:40000,10.10.1.57:40001" : {
"createdCollectionAutomatically" : false ,
"numIndexesBefore" : 1,
"numIndexesAfter" : 2,
"ok" : 1
}
},
"ok" : 1
}
mongos> sh.shardCollection( "people.customers" ,{country:1,_id:1})
{ "collectionsharded" : "people.customers" , "ok" : 1 }
mongos> sh.status()
--- Sharding Status ---
sharding version: {
"_id" : 1,
"version" : 4,
"minCompatibleVersion" : 4,
"currentVersion" : 5,
"clusterId" : ObjectId( "561c7bdd4315b18f9862adb4" )
}
shards:
{ "_id" : "rs0" , "host" : "rs0/10.10.1.55:40000,10.10.1.57:40001" }
{ "_id" : "rs1" , "host" : "rs1/10.10.1.56:40003,10.10.1.57:40004" }
databases:
{ "_id" : "admin" , "partitioned" : false , "primary" : "config" }
{ "_id" : "test" , "partitioned" : false , "primary" : "rs0" }
{ "_id" : "people" , "partitioned" : true , "primary" : "rs0" }
people.customers
shard key: { "country" : 1, "_id" : 1 }
chunks:
rs0 1
{ "country" : { "$minKey" : 1 }, "_id" : { "$minKey" : 1 } } -->> { "country" : { "$maxKey" : 1 }, "_id" : { "$maxKey" : 1 } } on : rs0 Timestamp(1, 0)
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现在由于数据量不多只有一个分片在rs0上,可以通过增加数据量来提高分片:
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for (var i=10;i<10000;i++) db.customers.insert({name: "ham" +i,country: "UK" })
for (var i=10;i<10000;i++) db.customers.insert({name: "ramda" +i,country: "Malaysia" })
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mongos> sh.status()
--- Sharding Status ---
sharding version: {
"_id" : 1,
"version" : 4,
"minCompatibleVersion" : 4,
"currentVersion" : 5,
"clusterId" : ObjectId("561c7bdd4315b18f9862adb4")
}
shards:
{ "_id" : "rs0", "host" : "rs0/10.10.1.55:40000,10.10.1.57:40001" }
{ "_id" : "rs1", "host" : "rs1/10.10.1.56:40003,10.10.1.57:40004" }
databases:
{ "_id" : "admin", "partitioned" : false, "primary" : "config" }
{ "_id" : "test", "partitioned" : false, "primary" : "rs0" }
{ "_id" : "people", "partitioned" : true, "primary" : "rs0" }
people.customers
shard key: { "country" : 1, "_id" : 1 }
chunks:
rs1 2
rs0 1
{ "country" : { "$minKey" : 1 }, "_id" : { "$minKey" : 1 } } -->> { "country" : "American", "_id" : ObjectId("561c7da73af7c7865defefb1") } on : rs1 Timestamp(2, 0)
{ "country" : "American", "_id" : ObjectId("561c7da73af7c7865defefb1") } -->> { "country" : "UK", "_id" : ObjectId("561c7db63af7c7865defefd4") } on : rs0 Timestamp(3, 1)
{ "country" : "UK", "_id" : ObjectId("561c7db63af7c7865defefd4") } -->> { "country" : { "$maxKey" : 1 }, "_id" : { "$maxKey" : 1 } } on : rs1 Timestamp(3, 0)
现在rs0上有一个分片,rs1上有两个分片
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