Centos7 under MongoDB shard configuration

Server architecture:

序号                角色                ip地址                备注1                   服务器            192.168.8.81     (config  server)2                   路由                192.168.8.82     (mongos)3                   分片节点         192.168.8.83     (shard)4                   分片节点         192.168.8.84     (shard)

Server Configuration (192.168.8.81):
A. Modify the configuration file:
Vim/etc/mongod.conf

fork = truepidfilepath = /var/run/mongodb/mongod.pidlogpath = /var/log/mongodb/mongod.logunixSocketPrefix = /var/run/mongodbdbpath = /var/lib/mongodbport=27017configsvr=true

B. Start the service:

systemctl  start  mongod

Routing Configuration (192.168.8.82):
A. Modify the configuration file:
Vim/etc/mongod.conf

fork = truepidfilepath = /var/run/mongodb/mongod.pidlogpath = /var/log/mongodb/mongod.logunixSocketPrefix = /var/run/mongodb#dbpath = /var/lib/mongodb  （注释掉数据库）port=27017configdb=192.168.8.81:27017

B. Deleting files in a database:

rm  -rf  /var/lib/mongodb/*

C. Start the service:

mongos  -f  

Shard machine Configuration (192.168.8.83/84):
A. Modify the configuration file:
Vim/etc/mongod.conf

fork = truepidfilepath = /var/run/mongodb/mongod.pidlogpath = /var/log/mongodb/mongod.logunixSocketPrefix = /var/run/mongodbdbpath = /var/lib/mongodb

B. Start the service:

systemctl  start  mongod

Test:
A. Routing machine (192.168.8.82):
A-1. Enter Terminal:

mongo

A-2. To add a shard machine:

sh.addShard("192.168.8.83:27017")sh.addShard("192.168.8.84:27017")

A-3. To view the status of a shard machine:

sh.status()

A-4. To add a shard database:

sh.enableSharding("testdb")

A-5. To add an index:

sh.shardCollection("testdb.user",{name:1,age:1})

A-6. To add test data:

for  (i = 1;i < 100000; i++)     {            db.user.insert({name:‘user‘+i,age:(i%150),addr:‘#‘+i}    }

B. Shard Machine (192.168.8.83/84):
B-1. Enter Terminal:

mongo

B-2. To view data that has been processed by sharding:

use  testdbdb.user.find()

Centos7 under MongoDB shard configuration