MongoDB master-slave replication and backup set deployment

I. MongoDB configuration parameter Description:

[Email protected] tmp]# cat/etc/mongod.conf

#以守护进程的方式运行

Fork=true

#设置db的路径

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

#设置日志路径

Logpath=/usr/local/mongodb/data/log/mongod.log

#logappend: Write the log mode: set to True for append. The default is overwrite. If this setting is not specified, MongoDB will overwrite the existing log file at startup.

Logappend=true

#设置端口号

port=27017

#在服务的端口号加上1000的端口上启动一个web服务器

Rest=true

#打开权限控制体系

#auth =true

Two. Deploy MongoDB master-slave replication:

1. Create a configuration file for master and slave:

[Email protected] tmp]# cat/etc/mongod_master.conf

Logpath=/usr/local/mongodb/data/log/mongod_master.log

Logappend=true

Fork=true

Dbpath=/usr/local/mongodb/data/master

port=10000

Rest=true

Master=true

#auth =true

#slaveok =true

[Email protected] tmp]#

[Email protected] tmp]# cat/etc/mongod_slave.conf

Logpath=/usr/local/mongodb/data/log/mongod_slave.log

Logappend=true

Fork=true

Dbpath=/usr/local/mongodb/data/slave

port=10001

Rest=true

Slave=true

#auth =true

source=127.0.0.1:10000

2. Start the master-slave process;

[[email protected] tmp] #mkdir-pv/usr/local/mongodb/data/master

[[email protected] tmp] #mkdir-pv/usr/local/mongodb/data/slave

[Email protected] tmp]mongod-f/etc/mongod_master.conf

[Email protected] tmp]mongod-f/etc/mongod_slave.conf

3. Check the master and slave status:

[Email protected] tmp]# MONGO localhost:10000

> Db.ismaster ();

{

"IsMaster": true,

"Maxbsonobjectsize": 16777216,

"Maxmessagesizebytes": 48000000,

"Maxwritebatchsize": 1000,

"LocalTime": Isodate ("2016-02-28t11:46:54.199z"),

"Maxwireversion": 4,

"Minwireversion": 0,

"OK": 1

}

>

> Db.printreplicationinfo ();

Configured Oplog SIZE:990MB

Log length start to End:23821secs (6.62hrs)

Oplog First Event Time:sun 13:05:17 gmt+0800 (CST)

Oplog last event Time:sun 19:42:18 gmt+0800 (CST)

Now:sun Feb 19:42:20 gmt+0800 (CST)

> Db.printslavereplicationinfo ();

Local.sources is empty; Is this db a--slave?

> Db.getreplicationinfo ();

{

"Logsizemb": 990,

"USEDMB": 0.14,

"Timediff": 23871,

"Timediffhours": 6.63,

"TFirst": "Sun Feb 13:05:17 gmt+0800 (CST)",

"Tlast": "Sun Feb 19:43:08 gmt+0800 (CST)",

"Now": "Sun Feb 19:43:18 gmt+0800 (CST)"

}

[Email protected] tmp]# MONGO localhost:10001

> Db.printreplicationinfo ();

This is a slave, printing slave replication info.

source:127.0.0.1:10000

Syncedto:sun Feb 19:44:18 gmt+0800 (CST)

4 secs (0 hrs) behind the freshest member (no primary available at the moment)

Three. Deployment of the backup set:

1. Create a configuration file for each node:

[Email protected] tmp]# cat/etc/mongod_node1.conf

Logpath=/usr/local/mongodb/data/log/mongod_node1.log

Logappend=true

Fork=true

Dbpath=/usr/local/mongodb/data/node1

port=20001

Rest=true

#auth =true

#slaveok =true

Replset=myrepl

[Email protected] tmp]# cat/etc/mongod_node2.conf

Logpath=/usr/local/mongodb/data/log/mongod_node2.log

Logappend=true

Fork=true

Dbpath=/usr/local/mongodb/data/node2

port=20002

Rest=true

#auth =true

#slaveok =true

Replset=myrepl

[Email protected] tmp]# cat/etc/mongod_node3.conf

Logpath=/usr/local/mongodb/data/log/mongod_node3.log

Logappend=true

Fork=true

Dbpath=/usr/local/mongodb/data/node3

port=20003

Rest=true

#auth =true

#slaveok =true

Replset=myrepl

[Email protected] tmp]#

2. Configure and activate the node service;

[[email protected] tmp] #mkdir-pv/usr/local/mongodb/data/node1

[[email protected] tmp] #mkdir-pv/usr/local/mongodb/data/node2

[[email protected] tmp] #mkdir-pv/usr/local/mongodb/data/node3

[[email protected] tmp] #mongod-F/etc/mongod_node1.conf

[[email protected] tmp] #mongod-F/etc/mongod_node2.conf

[[email protected] tmp] #mongod-F/etc/mongod_node2.conf

Login Mongod:

#设置备份集变量:

> config = {_id: "Myrepl", Members:[{_id:0,host: "127.0.0.1:20001"},{_id:1,host: "127.0.0.1:20002"},{_id:2,host: " 127.0.0.1:20003 "}]};

#初始化副本集配置

> rs.initiate (config);

3. Check the status of node nodes;

#查看副本集的状态

> Rs.status ();

#删除节点:

Rs.remove ("127.0.0.1:20001");

Rs.status ();

#添加节点:

Rs.add ("127.0.0.1:20001");

Rs.status ();

Four. MONGO master-Slave and backup cluster deployment is completed;

This article is from the "Webseven" blog, make sure to keep this source http://webseven.blog.51cto.com/4388012/1745849

MongoDB master-slave replication and backup set deployment