MongoDB Shard部署及Tag的使用

Shard部署

准备测试环境

为准备数据文件夹

Cd  /home/tiansign/fanr/mongodb/Shard

mkdir configdb1 configdb2 configdb3

mkdir shard1 shard2 shard3

mkdir mongos

准备配置文件

为Config准备配置文件

dbpath=/home/tiansign/fanr/mongodb/Shard/configdb1

fork = true

logpath=/home/tiansign/fanr/mongodb/Shard/configdb1/config.log

为Shard准备配置文件

dbpath=/home/tiansign/fanr/mongodb/Shard/shard1

fork = true

logpath=/home/tiansign/fanr/mongodb/Shard/shard1/shard.log

port=27018

dbpath=/home/tiansign/fanr/mongodb/Shard/shard2

fork = true

logpath=/home/tiansign/fanr/mongodb/Shard/shard2/shard.log

port=27021

dbpath=/home/tiansign/fanr/mongodb/Shard/shard3

fork = true

logpath=/home/tiansign/fanr/mongodb/Shard/shard3/shard.log

port=27020

启动Config服务

mongod --config /home/tiansign/fanr/mongodb/Shard/configdb1/config.cfg --configsvr

启动Mongos服务

#mongos -f /home/tiansign/fanr/mongodb/Shard/mongos/mongos.cfg

mongos –configdb 127.0.0.1:27019

启动Shard的Mongod

mongod --config /home/tiansign/fanr/mongodb/Shard/shard1/shard.cfg

mongod --config /home/tiansign/fanr/mongodb/Shard/shard2/shard.cfg

mongod --config /home/tiansign/fanr/mongodb/Shard/shard3/shard.cfg

加入Shard服务

Mongo

sh.addShard("127.0.0.1:27018")

sh.addShard("127.0.0.1:27021")

sh.addShard("127.0.0.1:27020")

db.settings.save( { _id:"chunksize", value: 1} )

配置Shard Database

sh.enableSharding("test")

配置Shard Collection

sh.shardCollection("test.joker", {jokes:1});

插入测试数据

for (var i=0; i<100000; i++) { db.joker.insert({jokes: Math.random(), count: i, time: new Date()}); }

查看Chunk分布情况

use config

db.chunks.find({ns: "test.joker"}, {shard:1, _id:0}).sort({shard:1})

{ "shard" : "shard0000" }

{ "shard" : "shard0000" }

{ "shard" : "shard0000" }

{ "shard" : "shard0000" }

{ "shard" : "shard0001" }

{ "shard" : "shard0001" }

{ "shard" : "shard0001" }

{ "shard" : "shard0002" }

{ "shard" : "shard0002" }

{ "shard" : "shard0002" }

Shard Tag的使用

先把Tag和Shard关联

sh.addShardTag("shard0000", "mr. j")

为Tag分配shard key

sh.addTagRange("test.joker", {jokes:MinKey}, {jokes:MaxKey}, "mr. j")

查看均衡器状态

db.locks.find( { _id : "balancer" } ).pretty()

查看Chunk分布情况

use config

db.chunks.find({ns: "test.joker"}, {shard:1, _id:0}).sort({shard:1})

{ "shard" : "shard0000" }

{ "shard" : "shard0000" }

{ "shard" : "shard0000" }

{ "shard" : "shard0000" }

{ "shard" : "shard0000" }

{ "shard" : "shard0000" }

{ "shard" : "shard0000" }

{ "shard" : "shard0000" }

{ "shard" : "shard0000" }

{ "shard" : "shard0000" }