为什么要进行分片

Mongodb2.6.0简单分片实验：

4)启动ShardServer

./mongod --shardsvr --replSet shard1 --port 27021 --dbpath /data/db/shardserver1 --logpath /data/logs/shardserver1.log --logappend --pidfilepath /data/pids/shardserver1.pid --fork

./mongod --shardsvr --replSet shard2 --port 27022 --dbpath /data/db/shardserver2 --logpath /data/logs/shardserver2.log --logappend --pidfilepath /data/pids/shardserver2.pid --fork

./mongod --shardsvr --replSet shard3 --port 27023 --dbpath /data/db/shardserver3 --logpath /data/logs/shardserver3.log --logappend --pidfilepath /data/pids/shardserver3.pid --fork

5)配置副本集

shardserver1:

mongo 10.88.88.11:27021

config = {_id:"shard1",members:[{_id:0,host:"10.88.88.11:27021"}]}

rs.initiate(config)

shardserver2:

mongo 10.88.88.11:27022

config = {_id:"shard2",members:[{_id:0,host:"10.88.88.11:27022"}]}

rs.initiate(config)

shardserver3:

mongo 10.88.88.11:27023

config = {_id:"shard3",members:[{_id:0,host:"10.88.88.11:27023"}]}

rs.initiate(config)

6) 启动ConfigServer

./mongod --configsvr --port 28001 --dbpath /data/db/configserver1 --logpath /data/logs/configserver1.log --logappend --pidfilepath /data/pids/configserver1.pid --fork

7）启动Route Process

./mongos --port 40000 --logpath /data/logs/routeprocess.log --logappend --pidfilepath /data/pids/routeprocess.pid --configdb 10.88.88.11:28001 --fork &

8）配置分片

mongo --port 40000 admin

db.runCommand({addshard:"shard1/10.88.88.11:27021"})

db.runCommand({addshard:"shard2/10.88.88.11:27022"})

db.runCommand({addshard:"shard3/10.88.88.11:27023"})

9）开启分片

use shardtest

sh.enableSharding('shardtest')

sh.shardCollection('shardtest.users',{uid:1})

9）插入数据

for(i=1;i<=100000;i++) db.users.insert({uid:i,name:'lee'+i,age:22})

10）查看分片的情况

sh.status(true)