Build MongoDB replica set under Linux

1. Build three MongoDB servers

Cd/usr/local

mkdir MongoDB

TAR-ZXVF mongodb-linux-x86_64-2.6.7.tgz

CD MONGODB-LINUX-X86_64-2.6.7MV */usr/local/mongodb

Cd/usr/local/mongodbmkdir Datatouch Logs

CD Bin./mongod-dbpath=/usr/local/mongodb/data-logpath=/usr/local/mongodb/logs booting and testing

2. Setting up the boot configuration file

cd/usr/local/mongodb/

Mkdir-p mongodb_data/mongodb_db

mkdir Mongodb_data/mongodb_logs

Vi/etc/mongodb.conf

Fork = True

Quiet = True

BIND_IP = 192.168.30.112

Port = 27017

DBPath =/usr/local/mongodb/mongodb_data/mongodb_db

LogPath =/usr/local/mongodb/mongodb_data/mongodb_logs/server1.log

Logappend = True

Journal = True

Rest = True

Replset = Test

Above 3 servers, the same installation steps

3. Start MongoDB

Cd/usr/local/mongodb/bin

./mongod-f/etc/mongodb.conf

We connect to one of the nodes and initialize with the Replsetinitiate command. This command requires a configuration object that specifies the name of each member set

./mongo 192.168.30.112: 3306/admin

Use admin

Rs.initiate ()

Confirm Settings
Rs.conf ()

添加第一个从库rs0:PRIMARY> rs.add(‘IP:27017‘)
添加第二个从库
以通过priority来调整主库，选举的时候，priority大的优先被选举为主库
rs.add({host: "IP:27017", priority: 5})

确认设定
rs0:PRIMARY> rs.conf()

查看状态rs0:SECONDARY> rs.status()

Remove from library

First close the MongoDB from the library, and then remove the library from the main library

rs0:PRIMARY> rs.remove(‘IP:27017‘)

Build MongoDB replica set under Linux