MongoDB 安装、主从配置、以及监控

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1、安装

---

#添加安装源

[mongodb]
name=MongoDB Repository
baseurl=http://downloads-distro.mongodb.org/repo/redhat/os/x86_64/
gpgcheck=0
enabled=1

#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

---

service mongod start

service mongod stop
service mongod restart

3、测试

---

使用mongoperf 查看磁盘IO性能

#mongoperf -h

usage:

mongoperf < myjsonconfigfile

{

nThreads:<n>, // number of threads (default 1)

fileSizeMB:<n>, // test file size (default 1MB)

sleepMicros:<n>, // pause for sleepMicros/nThreads between each operation (default 0)

mmf:<bool>, // if true do i/o's via memory mapped files (default false)

r:<bool>, // do reads (default false)

w:<bool>, // do writes (default false)

recSizeKB:<n>, // size of each write (default 4KB)

syncDelay:<n> // secs between fsyncs, like --syncdelay in mongod. (default 0/never)

}

进行测试：

[iyunv@php1 ~]# cat <jsonfile

{

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

4、主从配置

---

主	php1	172.17.16.7
从	mysql1	172.17.16.21

#两个服务器修改hosts：

172.17.16.7 php1.domain.com

#主上添加配置：vim /etc/mongod.conf

master = true

source = php1.dapingmu.conf

#从上添加配置：

#vim /etc/mongod.conf

slave = true

source = php1.dapingmu.com

#查看主从，使用robomongo或直接在服务器上使用命令行工具

#主服务器上

#mongo

>use local

>db.slaves.find()

/* 0 */

{

"_id" : ObjectId("526b44843f12574552e6ce48"),

"config" : {

"host" : "172.17.16.21:29025",

"upgradeNeeded" : true

},

"ns" : "local.oplog.$main",

"syncedTo" : Timestamp(1382870579, 1)

}

5、监控管理

---

#mongostat

The mongostat utility provides a quick overview of the status of a currently running mongod or mongosinstance. mongostat is functionally similar to the UNIX/Linux file system utility vmstat, but provides data regarding mongod and mongos instances.

#mongotop

mongotop provides a method to track the amount of time a MongoDB instance spends reading and writing data. mongotop provides statistics on a per-collection level. By default, mongotop returns values every second.

#mongodb连接管理客户端robomongo

下载地址：www.robomongo.org

#MMS管理

管理地址：https://mms.mongodb.com

需要安装pymongo并安装mms agent

1、安装Python 2.6+

2、安装PyMongo

3、下载：mms-monitoring-agent

wget https://mms.mongodb.com/settings/mmsAgent/15f01bbee11f24c1c5b2b31fab30c406/mms-monitoring-agent-（MMS-Group-Name).tar.gz

4、解压并运行

$ nohup python agent.py >> /YOUR_LOG_DIRECTORY/agent.log 2>&1 &

5、添加一个Mongo Node

即可登录MMS管理地址查看MongoDB 节点监控信息图表