linux下安装MongoDB,配置主从服务
官方网站：
http://www.mongodb.org/
MongoDB 安裝,主从配置
一 MongoDB 安装
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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 |
注意：
如果报错
-bash: /usr/local/mongodb/bin/mongod: cannot execute binary file
说明你的服务器和mongodb 的版本不对应, 如果服务器是64位,下载x86_64的mongodb ,如果服务器是32位的, 下载i686的mongodb/
二 MongoDB 主从配置
1)实验环境
主:192.168.0.14
从:192.168.0.64
2)时间同步
两台机器做时间同步
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[root@zabbix_server src]# ntpdate time.windows.com |
3)启动服务
master:192.168.0.14
启动命令
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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
启动命令
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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)测试主从
在主上插入数据
测试1：
1 在主库上插入数据
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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 在从上查看数据(已有在主上插入的数据,说明主从成功)
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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 在主库上插入数据
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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 在从库上验证数据
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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 Jun 21 2013 14:59:10 GMT+0800 (CST) = 9 secs ago (0hrs) > > db.printSlaveReplicationInfo(); source: 192.168.0.14:27017 syncedTo: Fri Jun 21 2013 14:59:30 GMT+0800 (CST) = 16 secs ago (0hrs) > |
测试3：
在这个状态下,slave 下是不可以插入数据的
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> db.test.save({title:"This is slave test!"}) not master |
5) 一些查询状态的语句
1)查询库
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> show dbs; elaindb 0.0625GB local 0.125GB test 0.0625GB |
2)在从库上查询主库的地址
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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" : 1371797300000, "i" : 1 } } > |
3)查看主从复制状态
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> db.printReplicationInfo(); configured oplog size: 47.6837158203125MB log length start to end: 1375secs (0.38hrs) oplog first event time: Fri Jun 21 2013 14:30:35 GMT+0800 (CST) oplog last event time: Fri Jun 21 2013 14:53:30 GMT+0800 (CST) now: Fri Jun 21 2013 14:53:32 GMT+0800 (CST) > |
4)查看Collection状态
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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)应急
如果在应用中主挂掉了怎么办？
这个情况就需要,停止从库, 把从库以主库的启动命令起来就可以了。
1)停掉从库
kill -9 进程号
2)删除locat下文件
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rm mongodb/db/locat.* -rf |
3)启动从库
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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 增，删，改，查
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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("51c4187090db4e4751a3cd05"), "Name" : "ymind", "age" : 8 } > db.test.find({ "age" : 8} ); #查询数据 { "_id" : ObjectId("51c4187090db4e4751a3cd05"), "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" } ); > > |
文章来自：http://blog.chinaunix.net/uid-24250828-id-3770298.html