MongoDB installation and master-slave configuration in Linux system

MongoDB, master and slave configuration

A MongoDB installation

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[Root@zabbix_server src]# wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.0.0.tgz [Root@zabbix_server src]# tar xzvf mongodb-linux-x86_64-2.0.0.tgz [Root@zabbix_server src]# MV Mongodb-linux-x86_64-2.0.0/usr/local/mongodb [Root@zabbix_server src]# Mkdir/usr/local/mongodb/data [Root@zabbix_server src]# Touch/usr/local/mongodb/logs [Root@zabbix_server bin]#/usr/local/mongodb/bin/mongod--dbpath=/usr/local/mongodb/data--logpath=/usr/local/ Mongodb/logs--logappend--port=27017--fork [Root@zabbix_server bin]#./mongo MongoDB Shell version:2.0.0 Connecting To:test > Use test; Switched to DB test > Exit Bye [Root@zabbix_server bin]# Netstat-anlpt | grep MONGO TCP 0 0 0.0.0.0:27017 0.0.0.0:* LISTEN 11504/mongod TCP 0 0 0.0.0.0:28017 0.0.0.0:* LISTEN 11504/mongod

Attention:

If the error

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-bash:/usr/local/mongodb/bin/mongod:cannot Execute binary file

Explain your server and MongoDB version does not correspond, if the server is 64 bits, download x86_64 MongoDB, if the server is 32 bits, download i686 mongodb/
Two MongoDB master and slave configuration

1) Experimental environment

Main: 192.168.0.14

From: 192.168.0.64
2) Time synchronization

Two machines do time synchronization

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[Root@zabbix_server src]# ntpdate time.windows.com

3) Start Service

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master:192.168.0.14

Start command

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/usr/local/mongodb/bin/mongod--master--dbpath=/usr/local/mongodb/data--logpath=/usr/local/mongodb/logs-- Logappend--port=27017--fork slave:192.168.0.64

Start command

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/usr/local/mongodb/bin/mongod--slave--source 192.168.0.14:27017--dbpath=/usr/local/mongodb/data--logpath=/usr/ Local/mongodb/logs--logappend--port=27017--fork

4) test Master and slave

Insert data in our Lord
Test 1:

1 inserting data on the main library

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[Root@cacti bin]#./mongo MongoDB Shell version:2.0.0 Connecting To:test > Db.foo.save ({"id": 123456, "name": ' Lizonggang '}) > Db.foo.find ({"id": 123456}) {"_id": ObjectId ("51c3f4b21399022afd992f39"), "id": 123456, "name": "Lizonggang"} >

2 View the data from the above (the data that has been inserted in the Lord indicates the master-slave success)

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[Root@zabbix_server bin]#./mongo MongoDB Shell version:2.0.0 Connecting To:test > Db.foo.find ({"id": 123456}) {"_id": ObjectId ("51c3f4b21399022afd992f39"), "id": 123456, "name": "Lizonggang"} >

1 inserting data on the main library

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> Use ELAINDB Switched to DB elaindb > Db.test.save ({title: "This is a test!"}) > Db.test.find (); {"_id": ObjectId ("51c3f8f11a90c8da157c7f64"), "title": "This is a test!"} >

2 validating data from a library

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[Root@zabbix_server bin]#./mongo MongoDB Shell version:2.0.0 Connecting To:test > Use ELAINDB Switched to DB elaindb > Db.test.find (); {"_id": ObjectId ("51c3f8f11a90c8da157c7f64"), "title": "This is a test!"} > Db.printreplicationinfo (); This is a slave, printing slave replication info. source:192.168.0.14:27017 Syncedto:fri June 2013 14:59:10 gmt+0800 (CST) = 9 secs ago (0hrs) > > Db.printslavereplicationinfo (); source:192.168.0.14:27017 Syncedto:fri June 2013 14:59:30 gmt+0800 (CST) = secs ago (0hrs) >

Test 3:

In this state, slave is not available to insert data.

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> Db.test.save ({title: "This is slave test!"}) Not master

5 Statements of some query states

1) Query Library

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> Show DBS; Elaindb 0.0625GB Local 0.125GB Test 0.0625GB

2 Query the address of the main library from the library

5

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> Use local; Switched to DB Local > Db.sources.find () {"_id": ObjectId ("51c3f5dd568d10529950b10d"), "host": "192.168.0.14:27017", "source": "Main", "Syncedto": {"T": 137 1797300000, "I": 1}} >

3 View master-slave replication status

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> Db.printreplicationinfo (); Configured Oplog SIZE:47.6837158203125MB Log length start to End:1375secs (0.38hrs) Oplog Time:fri June 2013 14:30:35 gmt+0800 (CST) Oplog Last event Time:fri June 2013 14:53:30 gmt+0800 (CST) Now:fri June 2013 14:53:32 gmt+0800 (CST) >

4) View collection status

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> Db.printcollectionstats (); Foo { "NS": "Test.foo", "Count": 1, "Size": 56, "Avgobjsize": 56, "Storagesize": 4096, "Numextents": 1, "Nindexes": 1, "Lastextentsize": 4096, "Paddingfactor": 1, "Flags": 1, "Totalindexsize": 8176, "Indexsizes": { "_id_": 8176 }, "OK": 1 } --- System.indexes { "NS": "Test.system.indexes", "Count": 1, "Size": 64, "Avgobjsize": 64, "Storagesize": 4096, "Numextents": 1, "Nindexes": 0, "Lastextentsize": 4096, "Paddingfactor": 1, "Flags": 0, "Totalindexsize": 0, "Indexsizes": { }, "OK": 1 } --- >

6) Emergency

What if the Lord hangs out in the application?

This situation will need to be stopped from the library and put the start command from the library to the main library.

1) stop from the library

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Kill-9 Process Number

2) Delete the Locat file

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RM mongodb/db/locat.*-RF

3 Boot from Library

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/usr/local/mongodb/bin/mongod--master--dbpath=/usr/local/mongodb/data--logpath=/usr/local/mongodb/logs-- Logappend--port=27017--fork

7) MongoDB, delete, change, check

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[root@cacti bin]#./mongo MongoDB Shell version:2.0.0 connecting To:test > Db.test.insert ({"Name": "Ymind", "Age": 8}); #在test数据库里插入数据 > Db.test.find ({"Name": "Ymind"}); #查询数据 {"_id": ObjectId ("51C4187090DB4E4751A3CD ' Name ': ' Ymind ', ' Age ': 8} > Db.test.find ({' Age ': 8}); #查询数据 {"_id": ObjectId ("51c4187090db4e4751 A3cd05 ")," Name ":" Ymind "," Age ": 8} > Db.test.update ({" Name ":" Ymind "}, {" $set ": {" Age ": "5"}}); #修改数据 > Db.test.find ({"Name": "Ymind"}); {"Name": "Ymind", "_id": ObjectId ("51c4187090db4e4751a3cd05"), "Age": "5"} > Db.test.remove ({"Name": "Ymind"}); #删除数据 > Db.test.find ({"Name": "Ymind"});