mongodb 安装配置实践

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首先从官网下载mongodb的安装包http://www.mongodb.org/downloads我的系统是redhat5.8所有选择相应的版本包就ok现在最新版是3.0.3
解压mongodb-linux-x86_64-rhel55-3.0.3.tgz

[root@mongodb ~]# tar zxvf mongodb-linux-x86_64-rhel55-3.0.3.tgz -C /opt/

mongodb-linux-x86_64-rhel55-3.0.3/README

mongodb-linux-x86_64-rhel55-3.0.3/THIRD-PARTY-NOTICES

mongodb-linux-x86_64-rhel55-3.0.3/GNU-AGPL-3.0

mongodb-linux-x86_64-rhel55-3.0.3/bin/mongodump

mongodb-linux-x86_64-rhel55-3.0.3/bin/mongorestore

mongodb-linux-x86_64-rhel55-3.0.3/bin/mongoexport

mongodb-linux-x86_64-rhel55-3.0.3/bin/mongoimport

mongodb-linux-x86_64-rhel55-3.0.3/bin/mongostat

mongodb-linux-x86_64-rhel55-3.0.3/bin/mongotop

mongodb-linux-x86_64-rhel55-3.0.3/bin/bsondump

mongodb-linux-x86_64-rhel55-3.0.3/bin/mongofiles

mongodb-linux-x86_64-rhel55-3.0.3/bin/mongooplog

mongodb-linux-x86_64-rhel55-3.0.3/bin/mongoperf

mongodb-linux-x86_64-rhel55-3.0.3/bin/mongod

mongodb-linux-x86_64-rhel55-3.0.3/bin/mongos

mongodb-linux-x86_64-rhel55-3.0.3/bin/mongo

[root@mongodb opt]# ln -sv mongodb-linux-x86_64-rhel55-3.0.3/ mongodb

create symbolic link `mongodb' to `mongodb-linux-x86_64-rhel55-3.0.3/'

3.创建mongodb用户

[root@mongodb /]# useradd mongodb

4.创建相应文件目录并修改权限

[root@mongodb /]# mkdir /data/db -p

[root@mongodb /]# chown mongodb:mongodb /data/ -R

[root@mongodb opt]# chown -R mongodb:mongodb /opt/*

5.添加PATH环境变量在shell下正常访问mongodb的应用工具

[root@mongodb bin]# vim /etc/profile.d/mongodb.sh

export PATH=$PATH:/opt/mongodb/bin

[root@mongodb bin]# source /etc/profile.d/mongodb.sh

[root@mongodb bin]# echo $PATH

/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin:/opt/mongodb/bin

6.创建mongodb的PID存放目录

[root@mongodb run]# mkdir /var/run/mongodb

[root@mongodb run]# chown mongodb:mongodb /var/run/mongodb/ -R

[root@mongodb opt]# mongod --dbpath /data/db/ --logpath /var/log/mongodb.log --logappend --port 27017 --pidfilepath /var/run/mongodb/mongodb.pid --maxConns 250 --rest --httpinterface --fork

about to fork child process, waiting until server is ready for connections.

forked process: 4060

child process started successfully, parent exiting

--maxConns 250 ：表示最大连接数是250个

--rest --httpinterface : web接口，指定这项28017端口才能启用

--fork ：后台运行

7.安装过程中遇见的问题

装好之后连接出现以下警告

(1).[root@mongodb ~]# mongo

MongoDB shell version: 3.0.3

connecting to: test

Server has startup warnings:

2015-06-15T20:27:49.892+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.

2015-06-15T20:27:49.892+0800 I CONTROL [initandlisten]

出现这个问题就查看关于mongodb的文件权限，主要是/opt /data/db/ /var/run/mongodb/ /var/log/mongodb.log的权限因为启动初始化时以root用户的权限在运行，所以这些目录下的权限可能会变成root root

(2).[mongodb@mongodb db]$ mongod --dbpath /data/db/ --logpath /var/log/mongodb.log --logappend --port 27017 --pidfilepath /var/run/mongodb/mongodb.pid --maxConns 250 --rest --httpinterface --fork

2015-06-15T17:41:25.721+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is

'always'.

2015-06-15T17:41:25.721+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'

2015-06-15T17:41:25.721+0800 I CONTROL [initandlisten]

2015-06-15T17:41:25.721+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is

'always'.

2015-06-15T17:41:25.721+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'

修改两个参数即可

echo "never" > /sys/kernel/mm/transparent_hugepage/enabled

echo "never" > /sys/kernel/mm/transparent_hugepage/defrag

8.安装成功并登录

[root@mongodb ~]# ss -tanlp | grep mongod

0 0 *:27017 *:* users:(("mongod",4095,6))

0 0 *:28017 *:* users:(("mongod",4095,8))

[root@mongodb ~]# mongo

MongoDB shell version: 3.0.3

connecting to: test

> help

db.help() help on db methods

db.mycoll.help() help on collection methods

sh.help() sharding helpers

rs.help() replica set helpers

help admin administrative help

help connect connecting to a db help

help keys key shortcuts

help misc misc things to know

help mr mapreduce

show dbs show database names

show collections show collections in current database

show users show users in current database

show profile show most recent system.profile entries with time >= 1ms

show logs show the accessible logger names

show log [name] prints out the last segment of log in memory, 'global' is default

use <db_name> set current database

db.foo.find() list objects in collection foo

db.foo.find( { a : 1 } ) list objects in foo where a == 1

it result of the last line evaluated; use to further iterate

DBQuery.shellBatchSize = x set default number of items to display on shell

exit quit the mongo shell

登录web接口 28017端口

9.关闭服务器

(1).[root@mongodb ~]# mongod --shutdown

killing process with pid: 3936

(2).[root@mongodb ~]# killall mongod

10.给mongodb编写配置文件/etc/mongodb.conf

[root@mongodb ~]# grep -v ^# /etc/mongodb.conf

logpath=/var/log/mongodb.log

logappend=true

fork = true

dbpath=/data/db

pidfilepath = /var/run/mongodb/mongodb.pid

rest = true

httpinterface = true

启动

[root@mongodb ~]# mongod -f /etc/mongodb.conf

about to fork child process, waiting until server is ready for connections.

forked process: 4169

child process started successfully, parent exiting

[root@mongodb ~]# ss -tanlp | grep mongod

0 0 *:27017 *:* users:(("mongod",4169,6))

0 0 *:28017 *:* users:(("mongod",4169,8))

11.用service mongodb * 来启动mongodb

启动脚本：/etc/rc.d/init.d/mongod

#!/bin/bash

# mongod - Startup script for mongod

# chkconfig: 35 85 15

# description: Mongo is a scalable, document-oriented database.

# processname: mongod

# config: /etc/mongod.conf

# pidfile: /var/run/mongo/mongod.pid

. /etc/rc.d/init.d/functions

# things from mongod.conf get there by mongod reading it

CONFIGFILE="/etc/mongodb.conf"

OPTIONS=" -f $CONFIGFILE"

SYSCONFIG="/etc/sysconfig/mongod"

DBPATH=`awk -F= '/^dbpath=/{print $2}' "$CONFIGFILE"`

PIDFILE=`awk -F= '/^dbpath\s=\s/{print $2}' "$CONFIGFILE"`

mongod=${MONGOD-/opt/mongodb/bin/mongod}

MONGO_USER=mongodb

MONGO_GROUP=mongodb

if [ -f "$SYSCONFIG" ]; then

. "$SYSCONFIG"

# Handle NUMA access to CPUs (SERVER-3574)

# This verifies the existence of numactl as well as testing that the command works

NUMACTL_ARGS="--interleave=all"

if which numactl >/dev/null 2>/dev/null && numactl $NUMACTL_ARGS ls / >/dev/null 2>/dev/null

then

NUMACTL="numactl $NUMACTL_ARGS"

else

NUMACTL=""

start()

{

echo -n $"Starting mongod: "

daemon --user "$MONGO_USER" $NUMACTL $mongod $OPTIONS

RETVAL=$?

echo

[ $RETVAL -eq 0 ] && touch /var/lock/subsys/mongod

}

stop()

{

echo -n $"Stopping mongod: "

killproc -p "$PIDFILE" -d 300 /opt/mongodb/bin/mongod

RETVAL=$?

echo

[ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/mongod

}

restart () {

stop

start

}

ulimit -n 12000

RETVAL=0

case "$1" in

start)

start

;;

stop)

stop

;;

restart|reload|force-reload)

restart

;;

condrestart)

[ -f /var/lock/subsys/mongod ] && restart || :

;;

status)

status $mongod

RETVAL=$?

;;

echo "Usage: $0 {start|stop|status|restart|reload|force-reload|condrestart}"

RETVAL=1

esac

exit $RETVAL

测试启动

[root@mongodb ~]# service mongod start

Starting mongod: about to fork child process, waiting until server is ready for connections.

forked process: 4426

child process started successfully, parent exiting

[ OK ]

[root@mongodb init.d]# ss -tanlp | grep mongod

0 0 *:27017 *:* users:(("mongod",4426,6))

0 0 *:28017 *:* users:(("mongod",4426,8))

[root@mongodb ~]# mongo

MongoDB shell version: 3.0.3

connecting to: test

[root@mongodb ~]# service mongod start

Starting mongod: about to fork child process, waiting until server is ready for connections.

forked process: 4426

child process started successfully, parent exiting

[ OK ]

[root@mongodb ~]# service mongod stop

Stopping mongod: [ OK ]

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