MongoDB 安装、主从配置、以及监控

1、安装

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#添加安装源

#yum 安装
yum install -y mongo-10gen mongo-10gen-server

#添加到开机自动启动
chkconfig mongod on

2、启动，停止，重启命令

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service mongod start

service mongod stop
service mongod restart

3、测试

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使用mongoperf 查看磁盘IO性能#mongoperf -h
usage:
mongoperf < myjsonconfigfile

{

nThreads:, // number of threads (default 1)
fileSizeMB:, // test file size (default 1MB)
sleepMicros:, // pause for sleepMicros/nThreads between each operation (default 0)
mmf:, // if true do i/o's via memory mapped files (default false)
r:, // do reads (default false)
w:, // do writes (default false)
recSizeKB:, // size of each write (default 4KB)
syncDelay: // secs between fsyncs, like --syncdelay in mongod. (default 0/never)
}
进行测试：
[root@php1 ~]# cat {
nThreads:1,
fileSizeMB:1,
sleepMicros:0,
mmf:'true',
r:'true',
w:'true',
recSizeKB:4,
syncDelay:0
}

#参考Real world MongoDB benchmarks with benchRun
https://blog.serverdensity.com/real-world-mongodb-benchmarks-with-benchrun/

运行mongo
#mongo
>db.foo.insert( { _id : 1 } )
>ops = [{ op :"findOne", ns :"test.foo", query : { _id : 1 } }, { op :"update", ns :"test.foo", query : { _id : 1 } , update : { $inc : { x : 1 } } } ]
[
{
"op":"findOne",
"ns":"test.foo",
"query": {
"_id": 1
}
},
{
"op":"update",
"ns":"test.foo",
"query": {
"_id": 1
},
"update": {
"$inc": {
"x": 1
}
}
}
]
>for( x = 1; x<=128; x*=2){
... res = benchRun( { parallel : x ,
... seconds : 5 ,
... ops : ops
... } )
... print("threads: "+ x +"\t queries/sec: "+ res.query )
... }

threads: 1 queries/sec: 7886.8
threads: 2 queries/sec: 12786.2
threads: 4 queries/sec: 14891.2
threads: 8 queries/sec: 16361.2
threads: 16 queries/sec: 19811.6
threads: 32 queries/sec: 18343.8
threads: 64 queries/sec: 26470.4
threads: 128 queries/sec: 36110.4

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