作者：悲酥清风茶 | 来源：互联网 | 2014-05-28 16:53
最近有项目用到了MongoDB，于是测试在本地虚拟机搭建一主两从，从库可做备份，也可防止主库挂掉后变从为主。启动主库1mongod-master-dbpath/data/mongodb/master/-port27017启动两个从库的（5秒钟同步一次）12mongod-slave-source127.0.0.1:27
最近有项目用到了MongoDB，于是测试在本地虚拟机搭建一主两从，从库可做备份，也可防止主库挂掉后变从为主。
启动主库
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mongod -master -dbpath=/data/mongodb/master/ -port=27017
&
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启动两个从库的（5秒钟同步一次）
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mongod -slave -source=127.0.0.1:27017
-dbpath=/data/mongodb/slave1/ -port=27018 -slavedelay 5 &
mongod -slave -source=127.0.0.1:27017 -dbpath=/data/mongodb/slave2/
-port=27019 -slavedelay 5 &
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查看进程
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[root@mms ~]# ps -ef|grep mongo
root 7712 7534 0 19:26 pts/4 00:00:00 mongod -master
-dbpath=/data/mongodb/master/ -port=27017
root 7721 7506 0 19:26 pts/3 00:00:00 mongod -slave
-source=127.0.0.1:27017 -dbpath=/data/mongodb/slave1/ -port=27018
-slavedelay 5
root 7733 7478 0 19:26 pts/2 00:00:00 mongod -slave
-source=127.0.0.1:27017 -dbpath=/data/mongodb/slave2/ -port=27019
-slavedelay 5
root 7760 7416 0 19:28 pts/1 00:00:00 grep mongo
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接下来就可以在Master库里插入数据，查看Slave库的同步情况
往主库插入一条记录
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[root@mms ~]# mongo 127.0.0.1:27017
MongoDB shell version: 2.0.3
connecting to: 127.0.0.1:27017/test
> show dbs
local 0.125GB
mongodbtest (empty)
questiondb 0.0625GB
> use mongodbtest
switched to db mongodbtest
> db.mongotest.save({'title':'this is test
title','item':{'user':'hello','city':'beijing'}})
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从库27018的同步情况
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[root@mms ~]# mongo 127.0.0.1:27018
MongoDB shell version: 2.0.3
connecting to: 127.0.0.1:27018/test
> show dbs
local 0.0625GB
mongodbtest 0.0625GB
questiondb 0.0625GB
test (empty)
> use mongodbtest
switched to db mongodbtest
> db.mongotest.find()
{ "_id" : ObjectId("4f7d08cabf1eaec59250a52b"), "title" : "this is
test title", "item" : { "user" : "hello", "city" : "beijing" }
}
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从库27019的同步情况
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[root@mms ~]# mongo 127.0.0.1:27019
MongoDB shell version: 2.0.3
connecting to: 127.0.0.1:27019/test
> show dbs
local 0.0625GB
mongodbtest 0.0625GB
questiondb 0.0625GB
> use mongodbtest
switched to db mongodbtest
> db.mongotest.find()
{ "_id" : ObjectId("4f7d08cabf1eaec59250a52b"), "title" : "this is
test title", "item" : { "user" : "hello", "city" : "beijing" }
}
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