MongoDB Replica Set configuration steps

MongoDB Replica Set configuration steps

2012-11-09 14:10:24| Category: mongodb| Report | font size Subscription

Replication of the upgraded version of master-slave replication, which implements the automatic failover function, and from the node support read

One, node type:

A) Master node: supports read and write

b) from node: Support read (required setting)

c) Quorum node: Participation in voting also supports read (required setting)

Second, the experiment

Master node: 192.168.129.47

From node: 192.168.129.48

Quorum node: 192.168.129.49

1. The master node is configured as follows:

Vi/etc/rc.local

Rm/usr/mongodb/log/mongodb.log

/usr/mongodb/bin/mongod--dbpath=/usr/mongodb/data/--logpath=/usr/mongodb/log/mongodb.log--port 27017--replSet test/192.168.129.48:27017--maxconns=2000--fork–logappend

From the node configuration is as follows:

Vi/etc/rc.local

Rm/usr/mongodb/log/mongodb.log

/usr/mongodb/bin/mongod--dbpath=/usr/mongodb/data/--logpath=/usr/mongodb/log/mongodb.log--port 27017--replSet test/192.168.129.47:27017--maxconns=2000--fork–logappend

The quorum node is configured as follows:

Vi/etc/rc.local

Rm/usr/mongodb/log/mongodb.log

/usr/mongodb/bin/mongod--dbpath=/usr/mongodb/data/--logpath=/usr/mongodb/log/mongodb.log--port 27017--replSet test/192.168.129.47:27017,192.168.129.48:27017--fork–logappend

Start Mongod Service after configuration is complete

2. Execute on Master node after start (192.168.129.47)

Use admin

Db.runcommand ({"Replsetinitiate": {

"_id": "Test",

"Members": [

{

"_id": 0,

"Host": "192.168.129.47:27017"

},

{

"_id": 1,

"Host": "192.168.129.48:27017"

} ,

{

"_id": 2,

"Host": "192.168.129.49:27017"

}

]}})

#查看复制集状态
Rs.status ()
Rs.ismaster ()
Rs.conf ()

#查看从库状态
Db.printslavereplicationinfo ()

#设置从库可查询
Db.getmongo (). Setslaveok ()
Rs.setslaveok ()

#增加复制集节点
1. Lock the existing one from the library and write the data in the cache to disk
Use admin
Db.runcommand ({"Fsync": 1, "Lock": 1})
2. Copy is locked from the library's data file to the new data directory from the library
3. Unlock from Library
Db. $cmd. Sys.unlock.findOne ()
Db.currentop ()
4. Start the new library
./mongod--replset rs1--keyfile/data/set/key/r4--fork--port 28014--dbpath/data/set/r4--logpath=/data/set/log/ R4.log--logappend--fastsync
5.rs.add ("localhost:27017")

6. Delete the node:

Execute Rs.remove ("Ip:port") above the master node

MongoDB Replica Set configuration steps