安装及配置MONGODB CLUSTER
主服务器：master 10.1.1.3从服务器：slave 10.1.1.4
因为我是在VPS上安装的mongodb所以使用axel 来加速yum下载速度！
添加安装mongodb yum源：
# vim /etc/yum.repos.d/mongodb.repo
name=MongoDB Repository
baseurl=http://downloads-distro.mongodb.org/repo/redhat/os/x86_64/
gpgcheck=0
enabled=1
在主、从上都执行以下命令：
# yum -y install mongo-10gen mongo-10gen-server
安装完成后！
配置主服务器：10.1.1.3 master
# cat /etc/mongod.conf
logpath = /var/log/mongo/mongod.log
logappend = true
fork = true
port = 27017
dbpath = /var/lib/mongo
pidfilepath = /var/run/mongodb/mongod.pid
master = true
source = 10.1.1.4 #从服务器ip
配置从服务器：10.1.1.4 slave1
# cat /etc/mongod.conf
logpath = /var/log/mongo/mongod.log
logappend = true
fork = true
port = 27017
dbpath = /var/lib/mongo
pidfilepath = /var/run/mongodb/mongod.pid
slave = true
source = 10.1.1.3 #主服务器ip
启动主数据库
# service mongod start
# chkconfig mongod on
启动从数据库
# service mongod start
# chkconfig mongod on
查看一下主服务器，日志数据库是否同步成功！
# tail -f /var/log/mongo/mongod.log
Mon Dec 16 15:01:11.572 creating replication oplog of> Mon Dec 16 15:01:11.574 allocating new datafile /var/lib/mongo/local.1, filling with zeroes…
Mon Dec 16 15:01:11.574 creating directory /var/lib/mongo/_tmp
Mon Dec 16 15:01:11.603 done allocating datafile /var/lib/mongo/local.1,> Mon Dec 16 15:01:11.604 ******
Mon Dec 16 15:01:11.605 admin web console waiting for connections on port 28017
Mon Dec 16 15:01:11.605 waiting for connections on port 27017
Mon Dec 16 15:01:21.326 connection accepted from 10.1.1.4:49948 #1 (1 connection now open)
Mon Dec 16 15:01:22.343 build index local.slaves { _id: 1 }
Mon Dec 16 15:01:22.344 build index done. scanned 0 total records. 0.001 secs
查看一下从服务器，日志数据库是否同步成功！
# tail /var/log/mongo/mongod.log
Mon Dec 16 15:01:20.069 done allocating datafile /var/lib/mongo/local.ns,> Mon Dec 16 15:01:20.070 allocating new datafile /var/lib/mongo/local.0, filling with zeroes…
Mon Dec 16 15:01:20.072 done allocating datafile /var/lib/mongo/local.0,> Mon Dec 16 15:01:20.076 waiting for connections on port 27017
Mon Dec 16 15:01:20.076 admin web console waiting for connections on port 28017
Mon Dec 16 15:01:21.079 build index local.sources { _id: 1 }
Mon Dec 16 15:01:21.081 build index done. scanned 0 total records. 0.001 secs
Mon Dec 16 15:01:21.081 repl: syncing from host:10.1.1.3
Mon Dec 16 15:01:21.097 build index local.me { _id: 1 }
Mon Dec 16 15:01:21.099 build index done. scanned 0 total records. 0.001 secs
登陆数据库创建一个数据库看是否能同步成功！
# mongo
MongoDB shell version: 2.4.8
connecting to: test
Welcome to the MongoDB shell.
For interactive help, type “help”.
For more comprehensive documentation, see
http://docs.mongodb.org/
Questions? Try the support group
http://groups.google.com/group/mongodb-user
> show dbs;
local 1.078125GB
> use kernal #这个命令就是create DB
switched to db kernal
> db.blog.save({title:”kernal”})
> show dbs;
kernal 0.203125GB
local 1.078125GB
> exit
bye
到从服务器上查看是否有数据同步过来！
# mongo
MongoDB shell version: 2.4.8
connecting to: test
Welcome to the MongoDB shell.
For interactive help, type “help”.
For more comprehensive documentation, see
http://docs.mongodb.org/
Questions? Try the support group
http://groups.google.com/group/mongodb-user
> show dbs;
kernal 0.203125GB
local 0.078125GB
> exit
bye
到此MongoDB Cluster 安装完成！后续补上分片、聚合！
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