mongodb 3.2.5安装过程仔细记录

发布时间：2023-10-19 16:01:12 所属栏目：系统来源：

导读： mongodb 3.2.5安装

1 准备安装介质

安装介质下载：

mongodb的安装方式，我通常使用二进制包的方式，内网不能配置连接外网的yum源；

官方建议的mongodb下载地址为： Downloads.mongodb.org

但

mongodb 3.2.5安装

1 准备安装介质

安装介质下载：

mongodb的安装方式，我通常使用二进制包的方式，内网不能配置连接外网的yum源；

官方建议的mongodb下载地址为：   Downloads.mongodb.org

但实际上，这个地址，很难找到下载表，正常下载，通常可以用下面的下载地址选择下载：

我这里下载的是： 3.2.5 版本对应的 mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8.tgz

如果将整个mongodb安装过程已经编写了脚本，可以获取安装脚本，用脚本执行安装；

如果手动安装，则可跳过此步；

手工安装mongodb的脚步的执行过程，一般如下：

mkdir -p /root/{software,scripts}

wget -q http://ptmaster.test.cn/files/init/mongodb_install.sh -O /root/scripts/mongodb_install.sh

cd /root/scripts

./mongodb_install.sh -p 27117

2 添加mongodb用户和环境变量，修改系统参数

groupadd mongodb

useradd -g mongodb mongodb

创建mongodb脚本目录

mkdir -p /home/mongodb/scripts/

修改目录权限：

chown -R mongodb:mongodb /home/mongodb/scripts/

在 /etc/profile 中添加 mongodb 用户的环境变量：

# MongoDB Environment Variables

export PATH=$PATH:$HOME/bin:/usr/local/mongodb/bin:/home/mongodb/scripts/

是上面的变量生效：

source /etc/profile

实际操作过程如下：

[root@yq-mapp-otadb248 etc]# id mongodb

id: mongodb: No such user

[root@yq-mapp-otadb248 etc]#

[root@yq-mapp-otadb248 etc]#

[root@yq-mapp-otadb248 etc]# groupadd mongodb

useradd -g mongodb mongodb[root@yq-mapp-otadb248 etc]# useradd -g mongodb mongodb

[root@yq-mapp-otadb248 etc]#

[root@yq-mapp-otadb248 etc]#

[root@yq-mapp-otadb248 etc]# id mongodb

uid=801(mongodb) gid=801(mongodb) groups=801(mongodb)

[root@yq-mapp-otadb248 etc]#

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mongodb要求hugepage设置为禁用，soft limit设置足够大，可以在一开始修改，也可以到后面修改；

cat /etc/security/limits.d/90-nproc.conf

修改这个文件中下列的值

*               soft    nproc 2048

确保： soft nproc 的值至少是 soft nofile 值的一半；

修改后，退出当前用户，重新进入一下，设置就可以生效了；

禁用 hugepage 的值：

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

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

备注：上面两个警告，现在不修改也不影响安装过程，后面会提示。

3. 安装mongodb软件

上传并解压软件：

cd /usr/local

rz mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8.tgz

tar -zxvf mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8.tgz

ln -sv mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8 /usr/local/mongodb

修改文件权限：

chown -R mongodb:mongodb mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8

chown -R mongodb:mongodb /usr/local/mongodb

实际操作过程如下：

[root@yq-mapp-otadb248 src]# rz

rz waiting to receive.

Starting zmodem transfer. Press Ctrl+C to cancel.

Transferring mongodb-linux-x86_64-rhel62-3.2.5.tar.gz...

  100%   66999 KB    16749 KB/sec    00:00:04       0 Errors

[root@yq-mapp-otadb248 src]# ll

total 277792

-rw-r--r-- 1 root root 68607629 Oct 19 11:53 mongodb-linux-x86_64-rhel62-3.2.5.tar.gz

-rw-r--r-- 1 root root 215848960 Apr 19 2016 mongodb-linux-x86_64-rhel62-v3.2-latest

[root@yq-mapp-otadb248 src]#

[root@yq-mapp-otadb248 src]# tar -zxvf mongodb-linux-x86_64-rhel62-3.2.5.tar.gz

mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8/bin/

mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8/bin/mongooplog

mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8/bin/mongod

mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8/bin/mongo

mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8/bin/mongofiles

mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8/bin/bsondump

mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8/bin/mongorestore

mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8/bin/mongos

mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8/bin/mongoexport

mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8/bin/mongodump

mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8/bin/mongoimport

mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8/bin/mongotop

mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8/bin/mongostat

mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8/bin/mongoperf

mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8/GNU-AGPL-3.0

mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8/MPL-2

mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8/README

mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8/THIRD-PARTY-NOTICES

[root@yq-mapp-otadb248 src]#

[root@yq-mapp-otadb248 src]# ll

total 277796

drwxr-xr-x 3 root root      4096 Oct 19 11:54 mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8

-rw-r--r-- 1 root root 68607629 Oct 19 11:53 mongodb-linux-x86_64-rhel62-3.2.5.tar.gz

-rw-r--r-- 1 root root 215848960 Apr 19 2016 mongodb-linux-x86_64-rhel62-v3.2-latest

[root@yq-mapp-otadb248 src]#

[root@yq-mapp-otadb248 src]# mv mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8 ../

[root@yq-mapp-otadb248 src]# cd ..

[root@yq-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]# ln -sv mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8 /usr/local/mongodb

`/usr/local/mongodb' -> `mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8'

[root@yq-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]# chown -R mongodb:mongodb mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8

[root@yq-mapp-otadb248 local]# chown -R mongodb:mongodb /usr/local/mongodb

[root@yq-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]# ll

total 52

drwxr-xr-x. 2 root     root     4096 Apr 24 2014 bin

drwxr-xr-x. 2 root     root     4096 Sep 23 2011 etc

drwxr-xr-x. 2 root     root     4096 Sep 23 2011 games

drwxr-xr-x. 2 root     root     4096 Sep 23 2011 include

drwxr-xr-x. 2 root     root     4096 Sep 23 2011 lib

drwxr-xr-x. 3 root     root     4096 Apr 25 2014 lib64

drwxr-xr-x. 2 root     root     4096 Sep 23 2011 libexec

lrwxrwxrwx   1 root     root       25 Mar 6 2015 logstash -> /usr/local/logstash-1.4.2

drwxrwxr-x   8 logstash logstash 4096 Jun 24 2014 logstash-1.4.2

lrwxrwxrwx   1 mongodb mongodb    45 Oct 19 11:59 mongodb -> mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8

drwxr-xr-x   3 mongodb mongodb 4096 Oct 19 11:54 mongodb-linux-x86_64-rhel62-3.2.5-20-g07e21d8

lrwxrwxrwx   1 root     root       39 Apr 23 2014 mysql -> /usr/local/mysql-5.5.19-linux2.6-x86_64

drwxr-xr-x 12 root     mysql    4096 Apr 23 2014 mysql-5.5.19-linux2.6-x86_64

drwxr-xr-x. 2 root     root     4096 Sep 23 2011 sbin

drwxr-xr-x. 6 root     root     4096 Apr 25 2014 share

drwxr-xr-x. 2 root     root     4096 Oct 19 11:54 src

[root@yq-mapp-otadb248 local]#

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4 创建mongodb实例所需的目录和配置文件

创建mongodb实例所需目录：

mkdir -p /data/mongo_27117/{db,log,tmp}

创建mongodb实例配置文件所需目录和文件：

mkdir -p /etc/mongodb

touch /etc/mongodb/mongo_27117.conf

根据需要配置mongodb的启动参数，我的启动参数配置内容如下：

vim /etc/mongodb/mongo_27117.conf

dbpath=/data/mongo_27117/db

logpath=/data/mongo_27117/log/mongo_27117.log

pidfilepath = /data/mongo_27117/tmp/mongo_27117.pid

storageEngine = wiredTiger

wiredTigerCacheSizeGB = 2

syncdelay = 30

wiredTigerCollectionBlockCompressor = zlib

port=27117

auth = true

directoryperdb = true

oplogSize=2048

logappend=true

fork=true

#rest=true

journal = true

journalCommitInterval = 50

slowms = 200

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修改目录、文件的权限和属组：

chown -R mongodb:mongodb /data/mongo_27117/

chown -R mongodb:mongodb /etc/mongodb

确认目录和配置文件都已经准备完毕：

ls -l /data/mongo_27117/

ls -l /etc/mongodb

cat /etc/mongodb/mongo_27117.conf

该步骤实际操作过程如下：

[root@yq-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]# mkdir -p /data/mongo_27117/{db,log,tmp}

[root@yq-mapp-otadb248 local]# mkdir -p /etc/mongodb

[root@yq

复制代码

-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]# vim /etc/mongodb/mongo_27117.conf

dbpath=/data/mongo_27117/db

logpath=/data/mongo_27117/log/mongo_27117.log

pidfilepath = /data/mongo_27117/tmp/mongo_27117.pid

storageEngine = wiredTiger

wiredTigerCacheSizeGB = 2

syncdelay = 30

wiredTigerCollectionBlockCompressor = zlib

port=27117

auth = true

directoryperdb = true

oplogSize=2048

logappend=true

fork=true

#rest=true

journal = true

journalCommitInterval = 50

slowms = 200

~

[root@yq-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]# chown -R mongodb:mongodb /data/mongo_27117/

[root@yq-mapp-otadb248 local]# chown -R mongodb:mongodb /etc/mongodb

[root@yq-mapp-otadb248 local]# ls -l /data/mongo_27117/

total 12

drwxr-xr-x 2 mongodb mongodb 4096 Oct 19 12:02 db

drwxr-xr-x 2 mongodb mongodb 4096 Oct 19 12:02 log

drwxr-xr-x 2 mongodb mongodb 4096 Oct 19 12:02 tmp

[root@yq-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]# ls -l /etc/mongodb

total 4

-rw-r--r-- 1 mongodb mongodb 392 Oct 19 12:05 mongo_27117.conf

[root@yq-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]# cat /etc/mongodb/mongo_27117.conf

dbpath=/data/mongo_27117/db

logpath=/data/mongo_27117/log/mongo_27117.log

pidfilepath = /data/mongo_27117/tmp/mongo_27117.pid

storageEngine = wiredTiger

wiredTigerCacheSizeGB = 2

syncdelay = 30

wiredTigerCollectionBlockCompressor = zlib

port=27117

auth = true

directoryperdb = true

oplogSize=2048

logappend=true

fork=true

#rest=true

journal = true

journalCommitInterval = 50

slowms = 200

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5. 启动mongodb实例，修改管理员密码

使用下面的命令启动mongodb服务：

/usr/local/mongodb/bin/mongod --config /etc/mongodb/mongo_27117.conf

确认密码，mongodb的管理员密码，可以根据各自的规则设置：

echo $MONGODB_ROOT_PASS

mongodb_020248_Pass

修改管理员密码，注意 mongodb 3.2要对admin授予三个角色，这点与之前的版本不同：

/usr/local/mongodb/bin/mongo --port=27117

db.createUser({user:'useradmin',pwd:'mongodb_020248_Pass',roles:[ { "role" : "clusterAdmin", "db" : "admin" }, { "role" : "userAdminAnyDatabase", "db" : "admin" }, { "role" : "dbAdminAnyDatabase", "db" : "admin" } ] })

db.auth("useradmin","mongodb_020248_Pass")

db.system.users.find();

生成密码后,使用新用户和密码登陆mongo,确认状态：

/usr/local/mongodb/bin/mongo --port=27117 -u useradmin -p mongodb_020248_Pass --authenticationDatabase admin

该步骤操作过程如下；

[root@yq-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]# ps -ef|grep mongo

root     32295 30115 0 12:12 pts/0    00:00:00 grep mongo

[root@yq-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]# /usr/local/mongodb/bin/mongod --config /etc/mongodb/mongo_27117.conf

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

forked process: 32321

child process started successfully, parent exiting

[root@yq-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]# ps -ef|grep mongo

root     32321     1 1 12:12 ?        00:00:00 /usr/local/mongodb/bin/mongod --config /etc/mongodb/mongo_27117.conf

root     32359 30115 0 12:13 pts/0    00:00:00 grep mongo

[root@yq-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]# /usr/local/mongodb/bin/mongo --port=27117

MongoDB shell version: 3.2.5-20-g07e21d8

connecting to: 127.0.0.1:27117/test

Welcome to the MongoDB shell.

复制代码

For interactive help, type "help".

For more comprehensive documentation, see

        http://docs.mongodb.org/

Questions? Try the support group

        http://groups.google.com/group/mongodb-user

>

> use admin;

switched to db admin

> db.system.users.find();

Error: error: {

        "ok" : 0,

        "errmsg" : "not authorized on admin to execute command { find: \"system.users\", filter: {} }",

        "code" : 13

}

>

> db.createUser({user:'useradmin',pwd:'mongodb_020248_@JJMatch',roles:[ { "role" : "clusterAdmin", "db" : "admin" }, { "role" : "userAdminAnyDatabase", "db" : "admin" }, { "role" : "dbAdminAnyDatabase", "db" : "admin" } ] })

Successfully added user: {

        "user" : "useradmin",

        "roles" : [

                {

                        "role" : "clusterAdmin",

                        "db" : "admin"

                },

                {

                        "role" : "userAdminAnyDatabase",

                        "db" : "admin"

                },

                {

                        "role" : "dbAdminAnyDatabase",

                        "db" : "admin"

                }

        ]

}

>

> db.system.users.find();

Error: error: {

        "ok" : 0,

        "errmsg" : "not authorized on admin to execute command { find: \"system.users\", filter: {} }",

        "code" : 13

}

>

> db.auth("useradmin","mongodb_020248_@JJMatch")

1

>

> db.system.users.find();

{ "_id" : "admin.useradmin", "user" : "useradmin", "db" : "admin", "credentials" : { "SCRAM-SHA-1" : { "iterationCount" : 10000, "salt" : "6hLx/d97hS+yfoN47QTmXQ==", "storedKey" : "B0PqwVs3GFKIHQyyQ6mBp1MA370=", "serverKey" : "xK53AKKAvFCdn5rsEtij5QB9RtU=" } }, "roles" : [ { "role" : "clusterAdmin", "db" : "admin" }, { "role" : "userAdminAnyDatabase", "db" : "admin" }, { "role" : "dbAdminAnyDatabase", "db" : "admin" } ] }

>

[root@yq-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]# /usr/local/mongodb/bin/mongo --port=27117 -u useradmin -p mongodb_020248_@JJMatch --authenticationDatabase admin

MongoDB shell version: 3.2.5-20-g07e21d8

connecting to: 127.0.0.1:27117/test

Server has startup warnings:

2016-10-19T12:12:59.096+0800 I CONTROL [initandlisten]

2016-10-19T12:12:59.096+0800 I CONTROL [initandlisten] ** WARNING: The server was started without specifying a --bind_ip

2016-10-19T12:12:59.096+0800 I CONTROL [initandlisten] **          and listens for connections on all available network interfaces.

2016-10-19T12:12:59.097+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.

2016-10-19T12:12:59.097+0800 I CONTROL [initandlisten]

2016-10-19T12:12:59.097+0800 I CONTROL [initandlisten]

2016-10-19T12:12:59.097+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.

2016-10-19T12:12:59.097+0800 I CONTROL [initandlisten] **        We suggest setting it to 'never'

2016-10-19T12:12:59.097+0800 I CONTROL [initandlisten]

2016-10-19T12:12:59.097+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.

2016-10-19T12:12:59.097+0800 I CONTROL [initandlisten] **        We suggest setting it to 'never'

2016-10-19T12:12:59.097+0800 I CONTROL [initandlisten]

2016-10-19T12:12:59.097+0800 I CONTROL [initandlisten] ** WARNING: soft rlimits too low. rlimits set to 2048 processes, 8192 files. Number of processes should be at least 4096 : 0.5 times number of files.

2016-10-19T12:12:59.097+0800 I CONTROL [initandlisten]

>

> use admin;

switched to db admin

>

> db.system.users.find();

{ "_id" : "admin.useradmin", "user" : "useradmin", "db" : "admin", "credentials" : { "SCRAM-SHA-1" : { "iterationCount" : 10000, "salt" : "6hLx/d97hS+yfoN47QTmXQ==", "storedKey" : "B0PqwVs3GFKIHQyyQ6mBp1MA370=", "serverKey" : "xK53AKKAvFCdn5rsEtij5QB9RtU=" } }, "roles" : [ { "role" : "clusterAdmin", "db" : "admin" }, { "role" : "userAdminAnyDatabase", "db" : "admin" }, { "role" : "dbAdminAnyDatabase", "db" : "admin" } ] }

>

>

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6. 创建应用所需的业务账号

创建一个 admin / admin 用户，具有可以自行创建用户和数据库的权限，密码业务自己再修改：

db.createUser({user:'admin',pwd:'admin',roles:[{role:'userAdminAnyDatabase',db:'admin'},{role:'dbAdminAnyDatabase',db:'admin'}]})

验证业务账号登陆：

/usr/local/mongodb/bin/mongo --port=27117 -u admin -p admin --authenticationDatabase admin

该步骤，实际操作过程如下：

>

> db.system.users.find().pretty()

{

        "_id" : "admin.useradmin",

        "user" : "useradmin",

        "db" : "admin",

        "credentials" : {

                "SCRAM-SHA-1" : {

                        "iterationCount" : 10000,

                        "salt" : "6hLx/d97hS+yfoN47QTmXQ==",

                        "storedKey" : "B0PqwVs3GFKIHQyyQ6mBp1MA370=",

                        "serverKey" : "xK53AKKAvFCdn5rsEtij5QB9RtU="

                }

        },

        "roles" : [

                {

                        "role" : "clusterAdmin",

                        "db" : "admin"

                },

                {

                        "role" : "userAdminAnyDatabase",

                        "db" : "admin"

                },

                {

                        "role" : "dbAdminAnyDatabase",

                        "db" : "admin"

                }

        ]

}

{

        "_id" : "admin.admin",

        "user" : "admin",

        "db" : "admin",

        "credentials" : {

                "SCRAM-SHA-1" : {

                        "iterationCount" : 10000,

                        "salt" : "snlJe16a2PX3dSwxnOsfAw==",

                        "storedKey" : "VOoX1e7F0tOme6YuR+iyMLuEWK8=",

                        "serverKey" : "aSlpI7TzlyJ5Ccbd8GoptNB8khk="

                }

        },

        "roles" : [

                {

                        "role" : "userAdminAnyDatabase",

                        "db" : "admin"

                },

                {

                        "role" : "dbAdminAnyDatabase",

                        "db" : "admin"

                }

        ]

}

>

> ^C

bye

[root@yq-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]#

[root@yq-mapp-otadb248 local]# /usr/local/mongodb/bin/mongo --port=27117 -u admin -p admin --authenticationDatabase admin

MongoDB shell version: 3.2.5-20-g07e21d8

connecting to: 127.0.0.1:27117/test

>

> show dbs

admin 0.000GB

local 0.000GB

>

>

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7. 启动时的报警处理

在mongodb启动过程中，有时会提示一些警告，其中常见的两类警告处理过程如下：

警告1：

提示：

2016-10-19T12:12:59.097+0800 I CONTROL [initandlisten] ** WARNING: soft rlimits too low. rlimits set to 2048 processes, 8192 files. Number of processes should be at least 4096 : 0.5 times number of files.

参考： http://blog.csdn.net/kk185800961/article/details/45613267

处理方式，根据提示，将 processes 值，由现在的 2048，修改为4096，甚至更高的值。

ps -ef|grep mongod

cat /proc/32321/limits

cat /etc/security/limits.d/90-nproc.conf

vim /etc/security/limits.d/90-nproc.conf

该步骤实际操作过程如下：

[root@yq-mapp-otadb248 limits.d]#

[root@yq-mapp-otadb248 limits.d]# cat /etc/security/limits.d/90-nproc.conf

# 20160621 limit??

#*              soft    nproc           51200

#*              hard    nproc           51200

*               soft    nproc           2048

*               hard

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nproc           16384

*               soft    nofile          8192

*               hard    nofile          8192

*               soft    stack           8192

*               hard    stack           8192

*               soft    memlock         unlimited

*               hard    memlock         unlimited

[root@yq-mapp-otadb248 limits.d]# vim /etc/security/limits.d/90-nproc.conf

# 20160621

#*              soft    nproc           51200

#*              hard    nproc           51200

*               soft    nproc           8192

*               hard    nproc           16384

[root@yq-mapp-otadb248 ~]#

[root@yq-mapp-otadb248 ~]# ulimt -a

-bash: ulimt: command not found

[root@yq-mapp-otadb248 ~]# ulimit -a

core file size          (blocks, -c) 0

data seg size           (kbytes, -d) unlimited

scheduling priority             (-e) 0

file size               (blocks, -f) unlimited

pending signals                 (-i) 30422

max locked memory       (kbytes, -l) unlimited

max memory size         (kbytes, -m) unlimited

open files                      (-n) 8192

pipe size            (512 bytes, -p) 8

POSIX message queues     (bytes, -q) 819200

real-time priority              (-r) 0

stack size              (kbytes, -s) 8192

cpu time               (seconds, -t) unlimited

max user processes              (-u) 8192

virtual memory          (kbytes, -v) unlimited

file locks                      (-x) unlimited

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警告2：

2016-10-19T12:12:59.097+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.

2016-10-19T12:12:59.097+0800 I CONTROL [initandlisten] **        We suggest setting it to 'never'

2016-10-19T12:12:59.097+0800 I CONTROL [initandlisten]

2016-10-19T12:12:59.097+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.

2016-10-19T12:12:59.097+0800 I CONTROL [initandlisten] **        We suggest setting it to 'never'

确认：

cat /sys/kernel/mm/transparent_hugepage/enabled

cat /sys/kernel/mm/transparent_hugepage/defrag

处理：

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

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

该步骤，实际操作过程如下：

[root@yq-mapp-otadb248 limits.d]# cat /sys/kernel/mm/transparent_hugepage/enabled

[always] madvise never

[root@yq-mapp-otadb248 limits.d]# cat /sys/kernel/mm/transparent_hugepage/defrag

[always] madvise never

[root@yq-mapp-otadb248 limits.d]#

[root@yq-mapp-otadb248 limits.d]# echo "never" > /sys/kernel/mm/transparent_hugepage/enabled

[root@yq-mapp-otadb248 limits.d]# echo "never" > /sys/kernel/mm/transparent_hugepage/defrag

[root@yq-mapp-otadb248 limits.d]#

[root@yq-mapp-otadb248 limits.d]# cat /sys/kernel/mm/transparent_hugepage/enabled

always madvise [never]

[root@yq-mapp-otadb248 limits.d]# cat /sys/kernel/mm/transparent_hugepage/defrag

always madvise [never]

[root@yq-mapp-otadb248 limits.d]#

[root@yq-mapp-otadb248 limits.d]#

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8 创建mongodb实例管理脚本

为了方便对mongodb实例的启动和停止，可以先创建mongodb的启动脚本，停止脚本，然后在 /etc/init.d/ 目录下创建一个服务脚本，这样就可以用 service 进行实例管理了。

脚本1：启动脚本：

vim /home/mongodb/scripts/mongodb_start.sh

#!/bin/sh

# the scripts is used to start mongodb instance with port 27117.

# created by zhaofx on 20161019.

echo -n "Starting MongoDB port 27117 ... "

/usr/local/mongodb/bin/mongod --config /etc/mongodb/mongo_27117.conf &

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脚本二：停止脚本：

vim /home/mongodb/scripts/mongodb_stop.sh

#!/bin/bash

# the scripts is used to stop mongodb instance with port 27117.

# created by zhaofx on 20161019.

echo -n "Stopping MongoDB port 27117"

pid=`ps -o pid,command ax | grep mongod | awk '!/awk/ && !/grep/ {print $1}'`;

if [ "${pid}" != "" ]; then

        kill -2 ${pid};

fi

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脚本三：服务脚本：

vim /etc/init.d/mongodb

#! /bin/sh

# the scripts is used to mange mongodb service with linux service type.

# created by zhaofx on 20161019.

PATH=/usr/local/mongodb/bin:/sbin:/bin:/usr/sbin:/usr/bin

NAME=mongodb

start(){

/home/mongodb/scripts/mongodb_start.sh

}

stop(){

/home/mongodb/scripts/mongodb_stop.sh

}

test -x $DAEMON || exit 0

set -e

case "$1" in

        start)

                start

                ;;

        stop)

                stop

                ;;

        *)

                N=/etc/init.d/$NAME

                echo "Usage: $N {start|stop}" >&2

                exit 1

                ;;

esac

exit 0

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修改脚本的属组，添加执行权限：

chown -R mongodb:mongodb /home/mongodb/scripts/

chown mongodb:mongodb /etc/init.d/mongodb

chmod +x /home/mongodb/scripts/mongodb_start.sh

chmod +x /home/mongodb/scripts/mongodb_stop.sh

chmod +x /etc/init.d/mongodb

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最后执行服务启动和停止mongodb实例的过程为：

[root@yq-mapp-otadb248 ~]#

[root@yq-mapp-otadb248 ~]# service mongodb stop

Stopping MongoDB port 27117

[root@yq-mapp-otadb248 ~]#

[root@yq-mapp-otadb248 ~]#

[root@yq-mapp-otadb248 ~]#

[root@yq-mapp-otadb248 ~]# service mongodb start

Starting MongoDB port 27117 ... [root@yq-mapp-otadb248 ~]

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

forked process: 36088

child process started successfully, parent exiting

[root@yq-mapp-otadb248 ~]#

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