MongoDB集群部署记录 

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1. 购买机器
2. 添加DNS解析，处理数据盘。(逻辑卷管理,方便后期扩展)
（	pvcreate /dev/vdb
        vgcreate mg /dev/vdb
        lvcreate -n mglv -L 199G mg
        mkfs.ext4 /dev/mg/mglv
        mkdir /mongo
	设置自动挂载/etc/fstab
 ）
3. mongo 配置: (128;129;130)
	实例配置及启动(128;129;130):
	/usr/local/mongo/bin/mongod --configsvr --dbpath /mongo/data --port 27017 --logpath /mongo/logs/mongo.log  --fork
	启动mongos(128;129;130):
	/usr/local/mongo/bin/mongos --configdb 172.16.0.128:27017,172.16.0.129:27017,172.16.0.130:27017 --port 27300 --logpath /mongo/logs/mongos.log  --chunkSize 5  --fork
	设置分片:
	/usr/local/mongo/bin/mongod --shardsvr --replSet shard1 --port 27018 --dbpath /mongo/data/db/27018/ --logpath /mongo/logs/27018_shard1.log  --fork --nojournal --oplogSize 10
	/usr/local/mongo/bin/mongod --shardsvr --replSet shard2 --port 27019 --dbpath /mongo/data/db/27019/ --logpath /mongo/logs/27019_shard2.log  --fork --nojournal --oplogSize 10
	/usr/local/mongo/bin/mongod --shardsvr --replSet shard3 --port 27020 --dbpath /mongo/data/db/27020/ --logpath /mongo/logs/27020_shard3.log  --fork --nojournal --oplogSize 10
	设置分片：
>/usr/local/mongodb/bin/mongo 127.0.0.1:27018
use admin
config = { _id:"shard1", members:[
                     {_id:0,host:"172.16.0.128:27018"},
                     {_id:1,host:"172.16.0.129:27018"},
                     {_id:2,host:"172.16.0.130:27018",arbiterOnly:true}
                ]
         }
rs.initiate(config); //只在初始化的时候运行一次
>/usr/local/mongodb/bin/mongo 127.0.0.1:27019
use admin
config = { _id:"shard2", members:[
                     {_id:0,host:"172.16.0.128:27019"},
                     {_id:1,host:"172.16.0.129:27019"},
                     {_id:2,host:"172.16.0.130:27019",arbiterOnly:true}
                ]
         }
rs.initiate(config); //只在初始化的时候运行一次
>/usr/local/mongodb/bin/mongo 127.0.0.1:27020
use admin
config = { _id:"shard3", members:[
                     {_id:0,host:"172.16.0.128:27020"},
                     {_id:1,host:"172.16.0.130:27020"},
                     {_id:2,host:"172.16.0.129:27020",arbiterOnly:true}
                ]
         }
rs.initiate(config); //只在初始化的时候运行一次
	
运行分片：（mongos）
db.runCommand( { addshard : "shard1/172.16.0.128:27018,172.16.0.129:27018,172.16.0.130:27018"});
db.runCommand( { addshard : "shard2/172.16.0.128:27019,172.16.0.129:27019,172.16.0.130:27019”});
db.runCommand( { addshard : "shard3/172.16.0.128:27020,172.16.0.129:27020,172.16.0.130:27020”});
#指定testdb分片生效
db.runCommand( { enablesharding :"testdb"});
#指定数据库里需要分片的集合和片键
db.runCommand( { shardcollection : "testdb.table1",key : {id: 1} } )
// 添加认证
db.addUser({ user: "instarx", pwd: "instarx", roles: ["readWrite"] })
验证：
for (var i = 1; i <= 100000; i++)
db.table1.save({id:i,"test1":"testval1"});
mongos> db.table1.stats()