Shulou(Shulou.com)06/01 Report--

1. Introduction to MongoDB configuration parameters:

[root@host11 tmp] # cat / etc/mongod.conf

# run as a daemon

Fork=true

# set the path of db

Dbpath=/usr/local/mongodb/data/db

# set log path

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

# logappend: log writing mode: set to true and append. The default is override. If this setting is not specified, the existing log file will be overwritten by MongoDB at startup.

Logappend=true

# set port number

Port=27017

# start a web server on the port number of the service plus 1000

Rest=true

# Open the permission control system

# auth=true

two。 Deploy mongodb master-slave replication:

1. Create configuration files for master and slave:

[root@host11 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

[root@host11 tmp] #

[root@host11 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

two。 Start the master-slave process

[root@host11 tmp] # mkdir-pv / usr/local/mongodb/data/master

[root@host11 tmp] # mkdir-pv / usr/local/mongodb/data/slave

[root@host11 tmp] mongod-f / etc/mongod_master.conf

[root@host11 tmp] mongod-f / etc/mongod_slave.conf

3. Check the master-slave status:

[root@host11 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 Feb 28 2016 13:05:17 GMT+0800 (CST)

Oplog last event time: Sun Feb 28 2016 19:42:18 GMT+0800 (CST)

Now: Sun Feb 28 2016 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 28 2016 13:05:17 GMT+0800 (CST)"

TLast: "Sun Feb 28 2016 19:43:08 GMT+0800 (CST)"

Now: "Sun Feb 28 2016 19:43:18 GMT+0800 (CST)"

}

[root@host11 tmp] # mongo localhost:10001

> db.printReplicationInfo ()

This is a slave, printing slave replication info.

Source: 127.0.0.1:10000

SyncedTo: Sun Feb 28 2016 19:44:18 GMT+0800 (CST)

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

three。 Deployment of replica sets:

1. Create a profile for each node node:

[root@host11 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

[root@host11 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

[root@host11 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

[root@host11 tmp] #

two。 Configure and start each node service

[root@host11 tmp] # mkdir-pv / usr/local/mongodb/data/node1

[root@host11 tmp] # mkdir-pv / usr/local/mongodb/data/node2

[root@host11 tmp] # mkdir-pv / usr/local/mongodb/data/node3

[root@host11 tmp] # mongod-f / etc/mongod_node1.conf

[root@host11 tmp] # mongod-f / etc/mongod_node2.conf

[root@host11 tmp] # mongod-f / etc/mongod_node2.conf

Log in to mongod:

# set the replica set variable:

> config = {_ id: "myrepl", members: [{_ id:0,host: "127.0.0.1 id:0,host 20001"}, {_ id:1,host: "127.0.0.1 members 20002"}, {_ id:2,host: "127.0.0.1 myrepl"}]}

# initialize replica set configuration

> rs.initiate (config)

3. Check the status of each node node

# View the status of the replica set

> rs.status ()

# Delete a node:

Rs.remove ("127.0.0.1 purl 20001")

Rs.status ()

# add nodes:

Rs.add ("127.0.0.1 purl 20001")

Rs.status ()

four。 At this point, the deployment of mongo master-slave and replica cluster is complete.

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