mongodb3.2二進制單機版安裝

            mongodb3.2二進制安裝

1.環境介紹

2.配置環境變量,修改與之相關的系統參數

3.建立mongodb運行用戶和目錄等

4.上傳安裝包，解壓安裝

5.建立配置文件

6.啓動並進行簡單測試

7.總結 

1.環境介紹：

OS:Centos6.5_64

MongoDB版本：mongodb-linux-x86_64-rhel62-v3.2-latest.tgz

Memory:2G

2.配置環境變量,修改與之相關的系統參數

在該文件中末尾添加這些參數,不然後面會有相應地告警信息

[root@aly-lww3 ~]# vim /etc/security/limits.conf

*  -  fsize        unlimited    # (file size)

*  -  cpu          unlimited    # (cpu time)

*  -  as           unlimited    # (virtual memory size)

*  -  nofile       64000        # (open files)

*  -  nproc        64000        # (processes/threads)

mongodb soft nofile 64000

mongodb hard nofile 64000

mongodb soft nproc 32000

mongodb hard nproc 32000

在proc中關閉NUMA

[root@aly-lww3 ~]# echo 0 > /proc/sys/vm/zone_reclaim_mode 

[root@aly-lww3 ~]# sysctl -w vm.zone_reclaim_mode=0

vm.zone_reclaim_mode = 0

[root@aly-lww3 ~]# echo never > /sys/kernel/mm/transparent_hugepage/enabled

[root@aly-lww3 ~]# echo never > /sys/kernel/mm/transparent_hugepage/defrag

[root@aly-lww3 local]# vim /etc/rc.local 

if test -f /sys/kernel/mm/transparent_hugepage/enabled; then

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

fi

if test -f /sys/kernel/mm/transparent_hugepage/defrag; then

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

fi

上述操做的目的是解決相似以下的告警信息：

2015-03-19T00:43:27.760+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.

2015-03-19T00:43:27.760+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'

3.建立mongodb運行用戶和目錄等

由於高版本的mongodb須要獨立的用戶來運行mongod進程，像mysqld須要mysql用戶同樣,

因此這裏我推薦建立一個用戶。若是不建立的話，也能運行，不過日誌中會有相應的告警提示信息。

[root@aly-lww3 ~]# useradd mongodb  # 注意:mongodb這個用戶名能夠取別的

[root@aly-lww3 ~]# passwd mongodb

Changing password for user mongodb.

New password: 

BAD PASSWORD: it is based on a dictionary word

BAD PASSWORD: is too simple

Retype new password: 

passwd: all authentication tokens updated successfully.

[root@aly-lww3 ~]# 

建立須要的目錄，並修改權限,切換到mongodb用戶模式

[root@aly-lww3 ~]# su - mongodb

[mongodb@aly-lww3 ~]$ mkdir -p {data,log,conf}

[mongodb@aly-lww3 ~]$ ll

total 12

drwxrwxr-x 2 mongodb mongodb 4096 Jan 25 14:03 conf

drwxrwxr-x 2 mongodb mongodb 4096 Jan 25 14:03 data

drwxrwxr-x 2 mongodb mongodb 4096 Jan 25 14:03 log

[mongodb@aly-lww3 ~]$ 

4.上傳安裝包，解壓安裝

[mongodb@aly-lww3 ~]$ wget http://downloads.mongodb.org/linux/mongodb-linux-x86_64-rhel62-v3.2-latest.tgz

[mongodb@aly-lww3 ~]$ ll

total 64900

drwxrwxr-x 2 mongodb mongodb     4096 Jan 25 14:03 conf

drwxrwxr-x 2 mongodb mongodb     4096 Jan 25 14:03 data

drwxrwxr-x 2 mongodb mongodb     4096 Jan 25 14:03 log

-rw-rw-r-- 1 mongodb mongodb 66443467 Jan 23 02:47 mongodb-linux-x86_64-rhel62-v3.2-latest.tgz

[mongodb@aly-lww3 ~]$ tar -zxf mongodb-linux-x86_64-rhel62-v3.2-latest.tgz 

[mongodb@aly-lww3 ~]$ mv mongodb-linux-x86_64-rhel62-3.2.1-83-g187028f/ mongodb3.2.1

[mongodb@aly-lww3 ~]$ rm -f mongodb-linux-x86_64-rhel62-v3.2-latest.tgz  # 能夠不用刪除

5.建立配置文件

[mongodb@aly-lww3 ~]$ vim /home/mongodb/.bash_profile 

export PATH=/home/mongodb/mongodb3.2.1/bin:$PATH

[mongodb@aly-lww3 ~]$ source /home/mongodb/.bash_profile 

[mongodb@aly-lww3 ~]$ vim conf/mongodb.conf

# bind_ip=192.168.0.100 # ip綁定

port=37000  # 端口號

dbpath=/home/mongodb/data/

logpath=/home/mongodb/log/mongodb.log # 輸出日誌文件名稱

pidfilepath=/home/mongodb/mongobd.pid # pid文件名稱

journal=true

maxConns=50000 # 最大鏈接數

logappend=true  # 日誌輸出方式

fork=true # 以守護進程的方式運行，建立服務器進程

# httpinterface=false # web界面

noauth=true 

cpu=true

[mongodb@aly-lww3 ~]$ 

6.啓動並進行簡單測試

啓動有兩種方式啓動，直接命令行啓動，還有一種就是使用配置文件啓動,

強烈建議使用配置文件啓動。

[mongodb@aly-lww3 ~]$ /home/mongodb/mongodb3.2.1/bin/mongod -f /home/mongodb/conf/mongodb.conf 

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

forked process: 32485

child process started successfully, parent exiting

[mongodb@aly-lww3 ~]$ ps -ef|grep mongodb

root     32305 32261  0 13:56 pts/0    00:00:00 su - mongodb

mongodb  32485     1  1 14:43 ?        00:00:00 /home/mongodb/mongodb3.2.1/bin/mongod -f /home/mongodb/conf/mongodb.conf

mongodb  32502 32306  0 14:44 pts/0    00:00:00 grep mongodb

[mongodb@aly-lww3 ~]$ netstat -anltp|grep 37000

(Not all processes could be identified, non-owned process info

 will not be shown, you would have to be root to see it all.)

tcp        0      0 0.0.0.0:37000               0.0.0.0:*                   LISTEN      32485/mongod        

[mongodb@aly-lww3 ~]$ 

[mongodb@aly-lww3 ~]$ cat /home/mongodb/log/mongodb.log 

2016-01-25T14:43:50.877+0800 I CONTROL  [initandlisten] MongoDB starting : pid=32485 port=37000 dbpath=/home/mongodb/data/ 64-bit host=aly-lww3

2016-01-25T14:43:50.877+0800 I CONTROL  [initandlisten] db version v3.2.1-83-g187028f

2016-01-25T14:43:50.877+0800 I CONTROL  [initandlisten] git version: 187028f283545496b0254216d17822211fe5202c

2016-01-25T14:43:50.877+0800 I CONTROL  [initandlisten] OpenSSL version: OpenSSL 1.0.1e-fips 11 Feb 2013

2016-01-25T14:43:50.877+0800 I CONTROL  [initandlisten] allocator: tcmalloc

2016-01-25T14:43:50.877+0800 I CONTROL  [initandlisten] modules: none

2016-01-25T14:43:50.877+0800 I CONTROL  [initandlisten] build environment:

2016-01-25T14:43:50.877+0800 I CONTROL  [initandlisten]     distmod: rhel62

2016-01-25T14:43:50.877+0800 I CONTROL  [initandlisten]     distarch: x86_64

2016-01-25T14:43:50.877+0800 I CONTROL  [initandlisten]     target_arch: x86_64

2016-01-25T14:43:50.877+0800 I CONTROL  [initandlisten] options: { config: "/home/mongodb/conf/mongodb.conf", cpu: true, net: { maxIncomingConnections: 50000, port: 37000 }, processManagement: { fork: true, pidFilePath: "/home/mongodb/mongobd.pid" }, security: { authorization: "disabled" }, storage: { dbPath: "/home/mongodb/data/", journal: { enabled: true } }, systemLog: { destination: "file", logAppend: true, path: "/home/mongodb/log/mongodb.log" } }

2016-01-25T14:43:50.877+0800 I STORAGE  [initandlisten] wiredtiger_open config: create,cache_size=1G,session_max=20000,eviction=(threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),

2016-01-25T14:43:51.017+0800 I FTDC     [initandlisten] Initializing full-time diagnostic data capture with directory '/home/mongodb/data/diagnostic.data'

2016-01-25T14:43:51.018+0800 I NETWORK  [HostnameCanonicalizationWorker] Starting hostname canonicalization worker

2016-01-25T14:43:51.045+0800 I NETWORK  [initandlisten] waiting for connections on port 37000

[mongodb@aly-lww3 ~]$ 

建立一個快捷啓動mongodb的方式

[mongodb@aly-lww3 ~]$ vim start_mongodb.sh 

#!/bin/bash

/home/mongodb/mongodb3.2.1/bin/mongod -f /home/mongodb/conf/mongodb.conf 

[mongodb@aly-lww3 ~]$ ./start_mongodb.sh 

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

forked process: 32619

child process started successfully, parent exiting

[mongodb@aly-lww3 ~]$ 

[mongodb@aly-lww3 ~]$ cat /home/mongodb/log/mongodb.log 

2016-01-25T15:07:04.483+0800 I CONTROL  [main] ***** SERVER RESTARTED *****

2016-01-25T15:07:04.520+0800 I CONTROL  [initandlisten] MongoDB starting : pid=32619 port=37000 dbpath=/home/mongodb/data/ 64-bit host=aly-lww3

2016-01-25T15:07:04.520+0800 I CONTROL  [initandlisten] db version v3.2.1-83-g187028f

2016-01-25T15:07:04.520+0800 I CONTROL  [initandlisten] git version: 187028f283545496b0254216d17822211fe5202c

2016-01-25T15:07:04.520+0800 I CONTROL  [initandlisten] OpenSSL version: OpenSSL 1.0.1e-fips 11 Feb 2013

2016-01-25T15:07:04.520+0800 I CONTROL  [initandlisten] allocator: tcmalloc

2016-01-25T15:07:04.520+0800 I CONTROL  [initandlisten] modules: none

2016-01-25T15:07:04.520+0800 I CONTROL  [initandlisten] build environment:

2016-01-25T15:07:04.520+0800 I CONTROL  [initandlisten]     distmod: rhel62

2016-01-25T15:07:04.520+0800 I CONTROL  [initandlisten]     distarch: x86_64

2016-01-25T15:07:04.520+0800 I CONTROL  [initandlisten]     target_arch: x86_64

2016-01-25T15:07:04.520+0800 I CONTROL  [initandlisten] options: { config: "/home/mongodb/conf/mongodb.conf", cpu: true, net: { maxIncomingConnections: 50000, port: 37000 }, processManagement: { fork: true, pidFilePath: "/home/mongodb/mongobd.pid" }, security: { authorization: "disabled" }, storage: { dbPath: "/home/mongodb/data/", journal: { enabled: true } }, systemLog: { destination: "file", logAppend: true, path: "/home/mongodb/log/mongodb.log" } }

2016-01-25T15:07:04.521+0800 I -        [initandlisten] Detected data files in /home/mongodb/data/ created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.

2016-01-25T15:07:04.521+0800 I STORAGE  [initandlisten] wiredtiger_open config: create,cache_size=1G,session_max=20000,eviction=(threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),

2016-01-25T15:07:04.913+0800 I FTDC     [initandlisten] Initializing full-time diagnostic data capture with directory '/home/mongodb/data/diagnostic.data'

2016-01-25T15:07:04.914+0800 I NETWORK  [initandlisten] waiting for connections on port 37000

2016-01-25T15:07:04.914+0800 I NETWORK  [HostnameCanonicalizationWorker] Starting hostname canonicalization worker

[mongodb@aly-lww3 ~]$ 

7. 關閉mongodb數據庫

關閉mongodb數據庫，這裏有三種安全的方式

(1) kill -4 pid 

[mongodb@aly-lww3 ~]$ ps -ef|grep 'bin/mongod'|grep -v 'grep'

mongodb  32485     1  0 14:43 ?        00:00:07 /home/mongodb/mongodb3.2.1/bin/mongod -f /home/mongodb/conf/mongodb.conf

[mongodb@aly-lww3 ~]$ ps -ef|grep 'bin/mongod'|grep -v 'grep'|awk -F" " '{print $2}'

32485

[mongodb@aly-lww3 ~]$ kill -4 `ps -ef|grep 'bin/mongod'|grep -v 'grep'|awk -F" " '{print $2}'`

日誌太多,這裏省略...

再次啓動看看

[mongodb@aly-lww3 ~]$ ./start_mongodb.sh 

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

forked process: 32654

child process started successfully, parent exiting

[mongodb@aly-lww3 ~]$ 

[mongodb@aly-lww3 ~]$ tail -f  /home/mongodb/log/mongodb.log 

2016-01-25T15:13:30.772+0800 I CONTROL  [main] ***** SERVER RESTARTED *****

2016-01-25T15:13:30.809+0800 I CONTROL  [initandlisten] MongoDB starting : pid=32654 port=37000 dbpath=/home/mongodb/data/ 64-bit host=aly-lww3

2016-01-25T15:13:30.809+0800 I CONTROL  [initandlisten] db version v3.2.1-83-g187028f

2016-01-25T15:13:30.810+0800 I CONTROL  [initandlisten] git version: 187028f283545496b0254216d17822211fe5202c

2016-01-25T15:13:30.810+0800 I CONTROL  [initandlisten] OpenSSL version: OpenSSL 1.0.1e-fips 11 Feb 2013

2016-01-25T15:13:30.810+0800 I CONTROL  [initandlisten] allocator: tcmalloc

2016-01-25T15:13:30.810+0800 I CONTROL  [initandlisten] modules: none

2016-01-25T15:13:30.810+0800 I CONTROL  [initandlisten] build environment:

2016-01-25T15:13:30.810+0800 I CONTROL  [initandlisten]     distmod: rhel62

2016-01-25T15:13:30.810+0800 I CONTROL  [initandlisten]     distarch: x86_64

2016-01-25T15:13:30.810+0800 I CONTROL  [initandlisten]     target_arch: x86_64

2016-01-25T15:13:30.810+0800 I CONTROL  [initandlisten] options: { config: "/home/mongodb/conf/mongodb.conf", cpu: true, net: { maxIncomingConnections: 50000, port: 37000 }, processManagement: { fork: true, pidFilePath: "/home/mongodb/mongobd.pid" }, security: { authorization: "disabled" }, storage: { dbPath: "/home/mongodb/data/", journal: { enabled: true } }, systemLog: { destination: "file", logAppend: true, path: "/home/mongodb/log/mongodb.log" } }

2016-01-25T15:13:30.810+0800 I -        [initandlisten] Detected data files in /home/mongodb/data/ created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.

2016-01-25T15:13:30.810+0800 W -        [initandlisten] Detected unclean shutdown - /home/mongodb/data/mongod.lock is not empty.

2016-01-25T15:13:30.810+0800 W STORAGE  [initandlisten] Recovering data from the last clean checkpoint.

2016-01-25T15:13:30.810+0800 I STORAGE  [initandlisten] wiredtiger_open config: create,cache_size=1G,session_max=20000,eviction=(threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),

2016-01-25T15:13:31.145+0800 I FTDC     [initandlisten] Initializing full-time diagnostic data capture with directory '/home/mongodb/data/diagnostic.data'

2016-01-25T15:13:31.145+0800 I NETWORK  [initandlisten] waiting for connections on port 37000

2016-01-25T15:13:31.146+0800 I NETWORK  [HostnameCanonicalizationWorker] Starting hostname canonicalization worker

2016-01-25T15:13:32.019+0800 I FTDC     [ftdc] Unclean full-time diagnostic data capture shutdown detected, found interim file, some metrics may have been lost. OK

從啓動日誌看,自動恢復了。

(2) kill -2 pid

[mongodb@aly-lww3 ~]$ kill -2 `ps -ef|grep 'bin/mongod'|grep -v 'grep'|awk -F" " '{print $2}'`

[mongodb@aly-lww3 ~]$ > /home/mongodb/log/mongodb.log 

[mongodb@aly-lww3 ~]$ tail -f  /home/mongodb/log/mongodb.log 

2016-01-25T15:14:49.415+0800 I CONTROL  [signalProcessingThread] got signal 2 (Interrupt), will terminate after current cmd ends

2016-01-25T15:14:49.415+0800 I FTDC     [signalProcessingThread] Shutting down full-time diagnostic data capture

2016-01-25T15:14:49.416+0800 I CONTROL  [signalProcessingThread] now exiting

2016-01-25T15:14:49.416+0800 I NETWORK  [signalProcessingThread] shutdown: going to close listening sockets...

2016-01-25T15:14:49.416+0800 I NETWORK  [signalProcessingThread] closing listening socket: 6

2016-01-25T15:14:49.416+0800 I NETWORK  [signalProcessingThread] closing listening socket: 7

2016-01-25T15:14:49.416+0800 I NETWORK  [signalProcessingThread] removing socket file: /tmp/mongodb-37000.sock

2016-01-25T15:14:49.417+0800 I NETWORK  [signalProcessingThread] shutdown: going to flush diaglog...

2016-01-25T15:14:49.417+0800 I NETWORK  [signalProcessingThread] shutdown: going to close sockets...

2016-01-25T15:14:49.417+0800 I STORAGE  [signalProcessingThread] WiredTigerKVEngine shutting down

2016-01-25T15:14:49.456+0800 I STORAGE  [signalProcessingThread] shutdown: removing fs lock...

2016-01-25T15:14:49.456+0800 I CONTROL  [signalProcessingThread] dbexit:  rc: 0

再次啓動看看 

[mongodb@aly-lww3 ~]$ cat   /home/mongodb/log/mongodb.log 

2016-01-25T15:15:22.822+0800 I CONTROL  [main] ***** SERVER RESTARTED *****

2016-01-25T15:15:22.858+0800 I CONTROL  [initandlisten] MongoDB starting : pid=32681 port=37000 dbpath=/home/mongodb/data/ 64-bit host=aly-lww3

2016-01-25T15:15:22.858+0800 I CONTROL  [initandlisten] db version v3.2.1-83-g187028f

2016-01-25T15:15:22.858+0800 I CONTROL  [initandlisten] git version: 187028f283545496b0254216d17822211fe5202c

2016-01-25T15:15:22.858+0800 I CONTROL  [initandlisten] OpenSSL version: OpenSSL 1.0.1e-fips 11 Feb 2013

2016-01-25T15:15:22.858+0800 I CONTROL  [initandlisten] allocator: tcmalloc

2016-01-25T15:15:22.858+0800 I CONTROL  [initandlisten] modules: none

2016-01-25T15:15:22.858+0800 I CONTROL  [initandlisten] build environment:

2016-01-25T15:15:22.858+0800 I CONTROL  [initandlisten]     distmod: rhel62

2016-01-25T15:15:22.858+0800 I CONTROL  [initandlisten]     distarch: x86_64

2016-01-25T15:15:22.858+0800 I CONTROL  [initandlisten]     target_arch: x86_64

2016-01-25T15:15:22.858+0800 I CONTROL  [initandlisten] options: { config: "/home/mongodb/conf/mongodb.conf", cpu: true, net: { maxIncomingConnections: 50000, port: 37000 }, processManagement: { fork: true, pidFilePath: "/home/mongodb/mongobd.pid" }, security: { authorization: "disabled" }, storage: { dbPath: "/home/mongodb/data/", journal: { enabled: true } }, systemLog: { destination: "file", logAppend: true, path: "/home/mongodb/log/mongodb.log" } }

2016-01-25T15:15:22.858+0800 I -        [initandlisten] Detected data files in /home/mongodb/data/ created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.

2016-01-25T15:15:22.858+0800 I STORAGE  [initandlisten] wiredtiger_open config: create,cache_size=1G,session_max=20000,eviction=(threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),

2016-01-25T15:15:23.194+0800 I FTDC     [initandlisten] Initializing full-time diagnostic data capture with directory '/home/mongodb/data/diagnostic.data'

2016-01-25T15:15:23.195+0800 I NETWORK  [initandlisten] waiting for connections on port 37000

2016-01-25T15:15:23.195+0800 I NETWORK  [HostnameCanonicalizationWorker] Starting hostname canonicalization worker

從關閉和啓動日誌中看,相對使用kill -4 而言，使用kill -2 更安全些。

(3) 使用db.shutdownServer()關閉mongodb數據庫 

[mongodb@aly-lww3 ~]$ /home/mongodb/mongodb3.2.1/bin/mongo --port 37000 

MongoDB shell version: 3.2.1-83-g187028f

connecting to: 127.0.0.1:37000/test

Welcome to the MongoDB shell.

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

> show dbs

local  0.000GB

> use admin

switched to db admin

> db.shutdownServer();

server should be down...

2016-01-25T15:18:00.919+0800 I NETWORK  [thread1] trying reconnect to 127.0.0.1:37000 (127.0.0.1) failed

2016-01-25T15:18:00.921+0800 I NETWORK  [thread1] Socket recv() errno:104 Connection reset by peer 127.0.0.1:37000

2016-01-25T15:18:00.921+0800 I NETWORK  [thread1] SocketException: remote: (NONE):0 error: 9001 socket exception [RECV_ERROR] server [127.0.0.1:37000] 

2016-01-25T15:18:00.922+0800 I NETWORK  [thread1] reconnect 127.0.0.1:37000 (127.0.0.1) failed failed 

> exit

bye

[mongodb@aly-lww3 ~]$ 

查看關閉日誌

[mongodb@aly-lww3 ~]$ cat /home/mongodb/log/mongodb.log 

2016-01-25T15:17:29.958+0800 I NETWORK  [initandlisten] connection accepted from 127.0.0.1:41509 #1 (1 connection now open)

2016-01-25T15:18:00.915+0800 I COMMAND  [conn1] terminating, shutdown command received

2016-01-25T15:18:00.915+0800 I FTDC     [conn1] Shutting down full-time diagnostic data capture

2016-01-25T15:18:00.917+0800 I CONTROL  [conn1] now exiting

2016-01-25T15:18:00.917+0800 I NETWORK  [conn1] shutdown: going to close listening sockets...

2016-01-25T15:18:00.917+0800 I NETWORK  [conn1] closing listening socket: 6

2016-01-25T15:18:00.917+0800 I NETWORK  [conn1] closing listening socket: 7

2016-01-25T15:18:00.917+0800 I NETWORK  [conn1] removing socket file: /tmp/mongodb-37000.sock

2016-01-25T15:18:00.917+0800 I NETWORK  [conn1] shutdown: going to flush diaglog...

2016-01-25T15:18:00.917+0800 I NETWORK  [conn1] shutdown: going to close sockets...

2016-01-25T15:18:00.917+0800 I STORAGE  [conn1] WiredTigerKVEngine shutting down

2016-01-25T15:18:01.000+0800 I STORAGE  [conn1] shutdown: removing fs lock...

2016-01-25T15:18:01.000+0800 I CONTROL  [conn1] dbexit:  rc: 0

[mongodb@aly-lww3 ~]$ 

再次啓動看看 

[mongodb@aly-lww3 ~]$ ./start_mongodb.sh 

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

forked process: 32740

child process started successfully, parent exiting

[mongodb@aly-lww3 ~]$ 

[mongodb@aly-lww3 ~]$ tail -f  /home/mongodb/log/mongodb.log 

2016-01-25T15:19:00.369+0800 I CONTROL  [main] ***** SERVER RESTARTED *****

2016-01-25T15:19:00.406+0800 I CONTROL  [initandlisten] MongoDB starting : pid=32740 port=37000 dbpath=/home/mongodb/data/ 64-bit host=aly-lww3

2016-01-25T15:19:00.406+0800 I CONTROL  [initandlisten] db version v3.2.1-83-g187028f

2016-01-25T15:19:00.406+0800 I CONTROL  [initandlisten] git version: 187028f283545496b0254216d17822211fe5202c

2016-01-25T15:19:00.406+0800 I CONTROL  [initandlisten] OpenSSL version: OpenSSL 1.0.1e-fips 11 Feb 2013

2016-01-25T15:19:00.406+0800 I CONTROL  [initandlisten] allocator: tcmalloc

2016-01-25T15:19:00.406+0800 I CONTROL  [initandlisten] modules: none

2016-01-25T15:19:00.406+0800 I CONTROL  [initandlisten] build environment:

2016-01-25T15:19:00.406+0800 I CONTROL  [initandlisten]     distmod: rhel62

2016-01-25T15:19:00.406+0800 I CONTROL  [initandlisten]     distarch: x86_64

2016-01-25T15:19:00.407+0800 I CONTROL  [initandlisten]     target_arch: x86_64

2016-01-25T15:19:00.407+0800 I CONTROL  [initandlisten] options: { config: "/home/mongodb/conf/mongodb.conf", cpu: true, net: { maxIncomingConnections: 50000, port: 37000 }, processManagement: { fork: true, pidFilePath: "/home/mongodb/mongobd.pid" }, security: { authorization: "disabled" }, storage: { dbPath: "/home/mongodb/data/", journal: { enabled: true } }, systemLog: { destination: "file", logAppend: true, path: "/home/mongodb/log/mongodb.log" } }

2016-01-25T15:19:00.407+0800 I -        [initandlisten] Detected data files in /home/mongodb/data/ created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.

2016-01-25T15:19:00.407+0800 I STORAGE  [initandlisten] wiredtiger_open config: create,cache_size=1G,session_max=20000,eviction=(threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),

2016-01-25T15:19:00.759+0800 I FTDC     [initandlisten] Initializing full-time diagnostic data capture with directory '/home/mongodb/data/diagnostic.data'

2016-01-25T15:19:00.760+0800 I NETWORK  [initandlisten] waiting for connections on port 37000

2016-01-25T15:19:00.760+0800 I NETWORK  [HostnameCanonicalizationWorker] Starting hostname canonicalization worker

可見,使用db.shutdownServer()和使用kill -2 比較放心些。因此咱們最好能採用這兩種的其中一個便可。

7.總結 

  本文檔是基於目前相對較新的版本在測試過境中搭建的過程,並且是單機環境。目的是從頭開始嘗試

mongodb這種NoSQL數據庫的使用。我的看重的除了mongodb自身的優點外,最喜歡它的複製集和分片功能。

在這兩點上,目前關係型數據庫實現起來相對較複雜，不易維護管理。