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
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[mongodb-org-3.0]
name=MongoDB Repository
baseurl=https:
//repo
.mongodb.org
/yum/redhat/
$releasever
/mongodb-org/3
.0
/x86_64/
gpgcheck=0
enabled=1
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三、安装配置
1、安装并创建数据目录
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#yum install -y mongodb-org
#mkdir -p /Data/mongodb
#chown mongod.mongod /Data/mongodb -R
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2、配置mongod.conf
#vim /etc/mongod.conf
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# mongod.conf
# for documentation of all options, see:
# http://docs.mongodb.org/manual/reference/configuration-options/
# where to write logging data.
systemLog:
destination:
file
logAppend:
true
path:
/Data/mongodb/mongod
.log
#需要自定义
# Where and how to store data.
storage:
dbPath:
/Data/mongodb/db
#需要自定义
journal:
enabled:
true
# engine:
# mmapv1:
# wiredTiger:
# how the process runs
processManagement:
fork:
true
# fork and run in background
pidFilePath:
/var/run/mongodb/mongod
.pid
# location of pidfile
# network interfaces
net:
port: 27017
bindIp: 10.1.0.7
# Listen to local interface only, comment to listen on all interfaces. 需要自定义
#security:
#operationProfiling:
#replication:
#sharding:
# Enterprise-Only Options
#auditLog:
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启动mongod
#service mongod start
四、测试
登录mongodb
#mongo --host 10.1.0.7
> db.version();
3.0.7
> show dbs
com_ylt_plat_passport 0.078GB
local 0.078GB
chown mongod.mongod /Data/mongodb -R
service mongod start
五、排错
故障描述 ：
service mongod stop 时发现 并没有 关闭mongod服务 进程依然在
通过排查发现问题出在/etc/mongod.conf中第24行
pidFilePath: /var/run/mongodb/mongod.pid # location of pidfile
把后面的# location of pidfile 删除掉 即可，这个是一个小bug
六、mogond备份与还原脚本
#cat mongodb_bak.sh
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#!/bin/sh
DUMP
=
/
usr
/
bin
/
mongodump
OUT_DIR
=
/
data1
/
backup
/
mongodb
/
mongod_bak_now
BAK_DIR
=
/
data1
/
backup
/
mongodb
/
mongod_bak_list
DATE
=
`date
+
%
F_
%
H
%
M
%
d`
#DB_USER=username
#DB_PASS=
DAYS
=
7
TAR_BAK
=
"mongodb_bak_$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
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#!/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
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#chmod +x /etc/init.d/disable-transparent-hugepages
#chkconfig --add disable-transparent-hugepages
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3、修改系统参数
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#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！
