Mongodb2.4.3集羣安裝筆記

機器：

192.168.40.80 -> mongodb01

192.168.40.81 -> mongodb02

192.168.40.82 -> mongodb03

192.168.40.83 -> mongodb04

192.168.40.84 -> mongodb05

sharding架構設置

mongodb01	shard11			shard43	shard52
mongodb02	shard12	shard21			shard53
mongodb03	shard13	shard22	shard31
mongodb04		shard23	shard32	shard41
mongodb05			shard33	shard42	shard51

註明：

同色塊爲整個數據集的各個分部sharding（分散於各機器中）

同一分部sharding有三個replica副本

補充：這裏說一下關於Replica Sets和Sharding，Sharding是將整個數據庫分成若干個shard，每一個shard在replica sets中存在若干個副本。這樣能夠將數據庫訪問的壓力通過shards分散到集羣中的若干臺機器，同時每個shard存在若干個分散的副本使得某個副本的丟失不會影響整個系統的運行。

1. 配置主機名：

# vi /etc/hosts
# vi /etc/sysconfig/network
# hostname newhostname

then relogin

2. 解壓安裝包

# tar zxvf mongodb-linux-x86_64-2.4.3.tgz

3. 創建shard數據目錄

@mongodb01

# mkdir -p /mongodb_data/data/shard11
# mkdir -p /mongodb_data/data/shard43
# mkdir -p /mongodb_data/data/shard52

@mongodb02

# mkdir -p /mongodb_data/data/shard12
# mkdir -p /mongodb_data/data/shard21
# mkdir -p /mongodb_data/data/shard53

......

4. 配置replica sets

Shard1:

@mongodb01
# /opt/mongodb-linux-x86_64-2.4.3/bin/mongod -shardsvr -replSet shard1 -port 29019 -logpath /mongodb_data/data/shard11.log -dbpath /mongodb_data/data/shard11 -fork --logappend
@mongodb02
# /opt/mongodb-linux-x86_64-2.4.3/bin/mongod -shardsvr -replSet shard1 -port 29019 -logpath /mongodb_data/data/shard12.log -dbpath /mongodb_data/data/shard12 -fork --logappend
@mongodb03
# /opt/mongodb-linux-x86_64-2.4.3/bin/mongod -shardsvr -replSet shard1 -port 29019 -logpath /mongodb_data/data/shard13.log -dbpath /mongodb_data/data/shard13 -fork --logappend

Shard2:

@mongodb02
# /opt/mongodb-linux-x86_64-2.4.3/bin/mongod -shardsvr -replSet shard2 -port 29020 -logpath /mongodb_data/data/shard21.log -dbpath /mongodb_data/data/shard21 -fork --logappend
@mongodb03
# /opt/mongodb-linux-x86_64-2.4.3/bin/mongod -shardsvr -replSet shard2 -port 29020 -logpath /mongodb_data/data/shard22.log -dbpath /mongodb_data/data/shard22 -fork --logappend
@mongodb04
# /opt/mongodb-linux-x86_64-2.4.3/bin/mongod -shardsvr -replSet shard2 -port 29020 -logpath /mongodb_data/data/shard23.log -dbpath /mongodb_data/data/shard23 -fork --logappend

Shard3:

@mongodb03
# /opt/mongodb-linux-x86_64-2.4.3/bin/mongod -shardsvr -replSet shard3 -port 29021 -logpath /mongodb_data/data/shard31.log -dbpath /mongodb_data/data/shard31 -fork --logappend
@mongodb04
# /opt/mongodb-linux-x86_64-2.4.3/bin/mongod -shardsvr -replSet shard3 -port 29021 -logpath /mongodb_data/data/shard32.log -dbpath /mongodb_data/data/shard32 -fork --logappend
@mongodb05
# /opt/mongodb-linux-x86_64-2.4.3/bin/mongod -shardsvr -replSet shard3 -port 29021 -logpath /mongodb_data/data/shard33.log -dbpath /mongodb_data/data/shard33 -fork --logappend

Shard4:

@mongodb04
# /opt/mongodb-linux-x86_64-2.4.3/bin/mongod -shardsvr -replSet shard4 -port 29022 -logpath /mongodb_data/data/shard41.log -dbpath /mongodb_data/data/shard41 -fork --logappend
@mongodb05
# /opt/mongodb-linux-x86_64-2.4.3/bin/mongod -shardsvr -replSet shard4 -port 29022 -logpath /mongodb_data/data/shard42.log -dbpath /mongodb_data/data/shard42 -fork --logappend
@mongodb01
# /opt/mongodb-linux-x86_64-2.4.3/bin/mongod -shardsvr -replSet shard4 -port 29022 -logpath /mongodb_data/data/shard43.log -dbpath /mongodb_data/data/shard43 -fork --logappend

Shard5:

@mongodb05
# /opt/mongodb-linux-x86_64-2.4.3/bin/mongod -shardsvr -replSet shard5 -port 29023 -logpath /mongodb_data/data/shard51.log -dbpath /mongodb_data/data/shard51 -fork --logappend
@mongodb01
# /opt/mongodb-linux-x86_64-2.4.3/bin/mongod -shardsvr -replSet shard5 -port 29023 -logpath /mongodb_data/data/shard52.log -dbpath /mongodb_data/data/shard52 -fork --logappend
@mongodb02
# /opt/mongodb-linux-x86_64-2.4.3/bin/mongod -shardsvr -replSet shard5 -port 29023 -logpath /mongodb_data/data/shard53.log -dbpath /mongodb_data/data/shard53 -fork --logappend

> config = {_id:'shard5',members:[ {_id: 0, host:'192.168.40.84:29023'}, {_id: 1, host:'192.168.40.80:29023'}, {_id: 2, host:'192.168.40.81:29023'}] }
> rs.initiate(config)

可能的錯誤

rs.initiate(config);

{"ok" : 0,

"errmsg" : "couldn't initiate : need all members up to initiate, not ok : 192.168.40.82:29019"} 

注意防火牆設置

5. 配置config server

@mongodb01~mongodb05
# mkdir /mongodb_data/data/config
# /opt/mongodb-linux-x86_64-2.4.3/bin/mongod -configsvr -port 29018 -logpath /mongodb_data/data/config.log -dbpath /mongodb_data/data/config -logappend -fork

6. 配置mongos

# /opt/mongodb-linux-x86_64-2.4.3/bin/mongos -configdb 192.168.40.80:29018 -port 29025 -logpath /mongodb_data/data/mongos.log -logappend -fork

7. 配置shard cluster

使用其中一臺服務器登錄數據庫

# mongo 192.168.40.80:29025
> use admin
> db.runCommand({addshard:"shard1/192.168.40.80:29019,192.168.40.81:29019,192.168.40.82:29019",name:"s1"})
> db.runCommand({addshard:"shard2/192.168.40.81:29020,192.168.40.82:29020,192.168.40.83:29020",name:"s2"})
> db.runCommand({addshard:"shard3/192.168.40.82:29021,192.168.40.83:29021,192.168.40.84:29021",name:"s3"})
> db.runCommand({addshard:"shard4/192.168.40.83:29022,192.168.40.84:29022,192.168.40.80:29022",name:"s4"})
> db.runCommand({addshard:"shard5/192.168.40.84:29023,192.168.40.80:29023,192.168.40.81:29023",name:"s5"})

db.printShardingStatus() - 打印sharding狀態

mongodb web管理端，端口爲連接端口號+1000

http://192.168.40.80:30025

注意在啓動mongod時需要指定 --rest才能查看命令返回結果

參考資料：

http://www.taobaodba.com/html/525_525.html

http://blog.csdn.net/weiyuanke/article/details/7639905