[App] MongoDB Cluster 配置

Mongodb集群有三种模式：  Replica Set 、 Sharding、Master-Slaver

现在演示 Replica Set模式。

 

主节点

172.16.237.128

备节点

172.16.237.129

仲裁

172.16.237.129

os

rhel 7.2

 

1、mongodb安装（所有节点）

# cd/usr/local/src

#wget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-rhel70-3.2.4.tgz

# tar -zxfmongodb-linux-x86_64-rhel70-3.2.4.tgz

#mv mongodb-linux-x86_64-rhel70-3.2.4 /usr/local/mongodb

# chmod +x/usr/local/mongodb/bin/*

# vi /etc/profile

export PATH=/usr/local/mongodb/bin:$PATH

# source /etc/profile

#cd /usr/local/mongodb/

#mkdir -p data/mongodb

#mkdir -p data/logs

 

2、各节点配置

#vi data/mongodb.conf     #主节点配置

port=27017

dbpath=/usr/local/mongodb/data/mongodb/

logpath=/usr/local/mongodb/data/logs/mongodb.log

fork=true

logappend=true

replSet=mzh

bind_ip=172.16.237.128

noprealloc=true #是否禁用数据文件预分配

oplogSize=100     #设置oplog的大小（MB）

 

#vi data/mongodb.conf     #备节点配置

port=27017

dbpath=/usr/local/mongodb/data/mongodb/

logpath=/usr/local/mongodb/data/logs/mongodb.log

fork=true

logappend=true

replSet=mzh

bind_ip=172.16.237.128

noprealloc=true

oplogSize=100

 

#vi data/mongodb1.conf     # 仲裁配置

port=27018

dbpath=/usr/local/mongodb/data/mongodb1/

logpath=/usr/local/mongodb/data/logs/mongodb1.log

fork=true

logappend=true

replSet=mzh

bind_ip=172.16.237.128

noprealloc=true

oplogSize=100

 

3、启动

#mongod --config /usr/local/mongodb/data/mongodb.conf    #主

about to fork child process, waiting until server is ready for connections.

forked process: 17802

child process started successfully, parent exiting

 

#mongod --config /usr/local/mongodb/data/mongodb.conf    #备

#mongod --config /usr/local/mongodb/data/mongodb1.conf   #仲裁

 

4、加入自启

# vi /etc/rc.local

mongod --config /usr/local/mongodb/data/mongodb.conf

 

5、主节点配置集群

# mongo 172.16.237.128

> use admin

> cfg={_id:"mzh",members:[{_id:0,host:"172.16.237.128:27017",priority:2},{_id:1,host:"172.16.237.129:27017",priority:1},{_id:2,host:"172.16.237.129:27018",arbiterOnly:true}]}

> rs.initiate(cfg)

> rs.status()

 

# priority优先级高的为主

# arbiterOnly:true 仲裁点，主备模式生效

 

2、测试

#主节点新增记录

# mongo

> use test

>db.createCollection("test_table")

> showcollections

>db.test_table.insert({uid:1,"name":"test",url:"www.ceshi1.com"})

 

#备节点查看刚才的记录

# mongo

> use test

>db.test_table.find()