MongoDB Replica set Environment construction

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Environment Introduction:

192.168.1.250 Main port=27408

192.168.1.250 arbitration port=27409

192.168.1.251 Preparation port=27408

[Email protected] ~]# tar xvf mongodb-linux-x86_64-2.6.10.tgz

[Email protected] ~]# mkdir-p/export/mongodb

[Email protected] ~]# mkdir-p/export/mongodb/bin

[Email protected] ~]# mkdir-p/export/mongodb/conf

[Email protected] ~]# mkdir-p/export/mongodb/log

[Email protected] ~]# mkdir-p/export/mongodb/data

[Email protected] bin]# Cd/root/mongodb-linux-x86_64-2.6.10/bin

[Email protected] bin]# cp/root/mongodb-linux-x86_64-2.6.10/bin/*/export/mongodb/bin/

[Email protected] bin]# vi/export/mongodb/conf/mongod.conf

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port=27408dbpath=/export/mongodb/datalogpath=/export/mongodb/log/mongod.logfork=truelogappend=truekeyFile=/export/mongodb/key/mongodnohttpinterface=truereplSet=shard1[[email protected] bin]# vi /export/mongodb/conf/arbiter.confport=27409dbpath=/export/mongodb/arbiterlogpath=/export/mongodb/log/arbiter.logfork=truelogappend=truekeyFile=/export/mongodb/key/arbiternohttpinterface=truereplSet=shard1

keyfile files include:

Mongod,arbiter

Create a script that generates keyfile

VI create_key.sh

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cat/dev/urandom| LC_ALL=C tr-dc"[:alnum:]" | fold-w 10 |head-1 >/tmp/key.txtkeystring=`cat/tmp/key.txt`echo$keystring >/export/mongodb/key/mongodecho$keystring >/export/mongodb/key/arbiterchmod600 /export/mongodb/key/*

Start the server in the main

[Email protected] ~]#/export/mongodb/bin/mongod-f/export/mongodb/conf/mongod.conf

[Email protected] ~]#/export/mongodb/bin/mongod-f/export/mongodb/conf/arbiter.conf

In from

[Email protected] ~]#/export/mongodb/bin/mongod-f/export/mongodb/conf/mongod.conf

>config={_id: ' Shard1 ', members:[{_id:0,host: ' 192.168.1.248:27408 '},{_id:1,host: ' 192.168.1.249:27408 '},{_id:2 , host: ' 192.168.1.248:27409 ', Arbiteronly:true}]}

>rs.initiate (config)

Initialize Rs.initiate (config), config is the name defined previously

When the master and standby library is configured, the standby library is queried.

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shard1:SECONDARY> use testswitched todb testshard1:SECONDARY> db.t1.find()error: { "$err": "not master and slaveOk=false", "code" : 13435 }shard1:SECONDARY> rs.slaveOk()shard1:SECONDARY> db.t1.find(){ "_id": ObjectId("5704c11d3e0651733bfdea23"), "x": 1 }

Rs.stauts () can look at the state, Health:1 stands for health, statestr who is our arbitration

Want to downgrade the main library to from the Library, Rs.stepdown ()

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MongoDB Replica set Environment construction