CentOS6.8安装mongodb3.0及备份脚本

发布时间：2023-10-21 15:43:40 所属栏目：系统来源：

导读：一、系统环境

CentOS 6.8_x64

官方参考文档https://docs.mongodb.org/manual/reference/glossary/#term-init-script

二、添加官方yum库

#cd /etc/yum.repo.d/

#vim mongodb.repo

[mongodb-

一、系统环境

CentOS 6.8_x64

官方参考文档https://docs.mongodb.org/manual/reference/glossary/#term-init-script

二、添加官方yum库

#cd /etc/yum.repo.d/

#vim mongodb.repo

[mongodb-org-3.0]

name=MongoDB Repository

baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.0/x86_64/

gpgcheck=0

enabled=1

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三、安装配置

1、安装并创建数据目录

#yum install -y mongodb-org

#mkdir -p /Data/mongodb

#chown   mongod.mongod /Data/mongodb -R

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2、配置mongod.conf

#vim /etc/mongod.conf

# mongod.conf

# for documentation of all options, see:

#   http://docs.mongodb.org/manual/reference/configuration-options/

# where to write logging data.

systemLog:

  destination: file

  logAppend: true

  path: /Data/mongodb/mongod.log    #需要自定义

# Where and how to store data.

storage:

  dbPath: /Data/mongodb/db           #需要自定义

  journal:

    enabled: true

# engine:

# mmapv1:

# wiredTiger:

# how the process runs

processManagement:

  fork: true # fork and run in background

  pidFilePath: /var/run/mongodb/mongod.pid # location of pidfile

# network interfaces

net:

  port: 27017

  bindIp: 10.1.0.7 # Listen to local interface only, comment to listen on all interfaces.    需要自定义

#security:

#operationProfiling:

#replication:

#sharding:

# Enterprise-Only Options

#auditLog:

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启动mongod

#service mongod start

四、测试

登录mongodb

#mongo --host 10.1.0.7

> db.version();

3.0.7

> show dbs

com_ylt_plat_passport 0.078GB

local                  0.078GB

chown mongod.mongod   /Data/mongodb -R

service mongod start

五、排错

故障描述：

service mongod stop 时发现并没有关闭mongod服务进程依然在

通过排查发现问题出在/etc/mongod.conf中第24行

  pidFilePath: /var/run/mongodb/mongod.pid # location of pidfile

  把后面的# location of pidfile 删除掉即可，这个是一个小bug

六、mogond备份与还原脚本

#cat mongodb_bak.sh

#!/bin/sh

DUMP=/usr/bin/mongodump

OUT_DIR=/data1/backup/mongodb/mongod_bak_now

BAK_DIR=/data1/backup/mongodb/mongod_bak_list

DATE=`date +%F_%H%M%d`

#DB_USER=username

#DB_PASS=

DAYS=7

TAR_BAK="mongodb_bak_$DATE.tar.gz"

[ -d $OUT_DIR ] || mkdir -v $OUT_DIR

[ -d $BAK_DIR ] || mkdir -v $BAK_DIR

BAK_DB(){

cd $OUT_DIR

rm -rf $OUT_DIR/*

mkdir -p $DATE

#$DUMP -u $DB_USER -p $DB_PASS -o $OUT_DIR/$DATE

$DUMP -o $OUT_DIR/$DATE

tar czvf $BAK_DIR/$TAR_BAK $OUT_DIR/$DATE

find $BAK_DIR/ -mtime +$DAYS -delete

}

RESTORE_ALL(){

cd $OUT_DIR

for d in `ls`;

do

echo $OUT_DIR/$d

/usr/bin/mongorestore -d $OUT_DIR/$d

done

}

RESTORE_Choose(){

while true

do

  echo "when you choose 'quit|exit' exit to restore!"

  read -p "What's your choose?(Enter continue!)" choose

  if [[ $choose == 'quit' || $choose == 'exit' ]]

  then

       echo "You choose exit!" && exit 2

  fi

  cd $OUT_DIR

  d=`ls`

  cd $OUT_DIR/$d

  ls

  read -p "What's db your choose?" whatdb

  if [ "$whatdb" != '' ];

    then

      /usr/bin/mongorestore -d $whatdb

  else

        echo "choose is empty,exit~" && exit 0

  fi

done

}

case $1 in

        back)

        BAK_DB

        ;;

        resall)

        RESTORE_ALL

        ;;

        resone)

        RESTORE_Choose

        ;;

        *)

        echo "USGE:back|resall|resone"

        ;;

esac

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使用说明:

back   备份全部的mongod数据库

resall 还原所有的数据库

resone可以指定还原某一个数据库

七、解决警告提示

1、问题描述

解决登录mongo --host 10.1.0.7 --port 27017   类似如下提示

  ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.   和 ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.

MongoDB shell version: 3.0.7

connecting to: 10.1.0.7:27017/test

Server has startup warnings:

2016-12-08T16:10:15.638+0800 I CONTROL [initandlisten]

2016-12-08T16:10:15.638+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.

2016-12-08T16:10:15.638+0800 I CONTROL [initandlisten] **        We suggest setting it to 'never'

2016-12-08T16:10:15.638+0800 I CONTROL [initandlisten]

2016-12-08T16:10:15.638+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.

2016-12-08T16:10:15.638+0800 I CONTROL [initandlisten] **        We suggest setting it to 'never'

2016-12-08T16:10:15.638+0800 I CONTROL [initandlisten]

由于环境为CentOS6.8 所以解决方法如下，其他平台及版本请参考官方文档：https://docs.mongodb.org/manual/tutorial/transparent-huge-pages/

2、解决方法：

添加如下脚本

#vim /etc/init.d/disable-transparent-hugepages

#!/bin/sh### BEGIN INIT INFO

# Provides:          disable-transparent-hugepages

# Required-Start:    $local_fs

# Required-Stop:

# X-Start-Before:    mongod mongodb-mms-automation-agent

# Default-Start:     2 3 4 5

# Default-Stop:      0 1 6

# Short-Description: Disable Linux transparent huge pages

# Description:       Disable Linux transparent huge pages, to improve

#                    database performance.

### END INIT INFO

case $1 in

start)

    if [ -d /sys/kernel/mm/transparent_hugepage ]; then

        thp_path=/sys/kernel/mm/transparent_hugepage

    elif [ -d /sys/kernel/mm/redhat_transparent_hugepage ]; then

        thp_path=/sys/kernel/mm/redhat_transparent_hugepage

    else

        return 0

     fi

        echo 'never' > ${thp_path}/enabled

        echo 'never' > ${thp_path}/defrag

        unset thp_path

    ;;

    esac

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添加到开机自启服务

#chmod +x /etc/init.d/disable-transparent-hugepages

#chkconfig --add disable-transparent-hugepages

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3、修改系统参数

#mkdir -p /etc/tune-profiles/no-thp

#cd /etc/tune-profiles/no-thp

#echo "set_transparent_hugepages never" > ktune.sh

#chmod +x ktune.sh

#tuned-adm profile no-thp 如果提示找不到命令请执行yum install tuned -y

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reboot 系统

4、验证：

$mongo --host 10.1.0.7 --port 27017

MongoDB shell version: 3.0.7

connecting to: 10.1.0.7:27017/test

>

5、出现如下错误：

** WARNING: soft rlimits too low. rlimits set to 1024 processes, 64000 files. Number of processes should be at least 32000 : 0.5 times number of files.

#vim /etc/security/limits.conf

添加：

mongod soft nofile 64000

mongod hard nofile 64000

mongod soft nproc 32000

mongod hard nproc 32000

重启mongod

到此mongod安装完成~如有错误之处欢迎指正！

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