mongodb3.2二进制单机版安装

13544870125

　　mongodb3.2二进制安装
　　1.环境介绍
　　2.配置环境变量,修改与之相关的系统参数
　　3.创建mongodb运行用户和目录等
　　4.上传安装包，解压安装
　　5.创建配置文件
　　6.启动并进行简单测试
　　7.总结
　　1.环境介绍：
　　OS:Centos6.5_64
　　MongoDB版本：mongodb-linux-x86_64-rhel62-v3.2-latest.tgz
　　Memory:2G
　　2.配置环境变量,修改与之相关的系统参数
　　在该文件中末尾添加这些参数,否则后面会有相应地告警信息
　　[root@aly-lww3 ~]# vim /etc/security/limits.conf

　　*  -  fsize        unlimited    # (file>　　*  -  cpu          unlimited    # (cpu time)

　　*  -  as           unlimited    # (virtual memory>　　*  -  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中关闭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
　　上述操作的目的是解决类似如下的告警信息：
　　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.创建mongodb运行用户和目录等
　　因为高版本的mongodb需要独立的用户来运行mongod进程，像mysqld需要mysql用户一样,
　　所以这里我推荐创建一个用户。如果不创建的话，也能运行，不过日志中会有相应的告警提示信息。
　　[root@aly-lww3 ~]# useradd mongodb  # 注意:mongodb这个用户名可以取别的
　　[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 ~]#
　　创建需要的目录，并修改权限,切换到mongodb用户模式
　　[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.上传安装包，解压安装
　　[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  # 可以不用删除
　　5.创建配置文件
　　[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绑定
　　port=37000  # 端口号
　　dbpath=/home/mongodb/data/
　　logpath=/home/mongodb/log/mongodb.log # 输出日志文件名称
　　pidfilepath=/home/mongodb/mongobd.pid # pid文件名称
　　journal=true
　　maxConns=50000 # 最大连接数
　　logappend=true  # 日志输出方式
　　fork=true # 以守护进程的方式运行，创建服务器进程
　　# httpinterface=false # web界面
　　noauth=true
　　cpu=true
　　[mongodb@aly-lww3 ~]$
　　6.启动并进行简单测试
　　启动有两种方式启动，直接命令行启动，还有一种就是使用配置文件启动,
　　强烈建议使用配置文件启动。
　　[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>　　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 ~]$
　　创建一个快捷启动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. 关闭mongodb数据库
　　关闭mongodb数据库，这里有三种安全的方式
　　(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 $2}'`
　　日志太多,这里省略...
　　再次启动看看
　　[mongodb@aly-lww3 ~]$ ./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
　　从启动日志看,自动恢复了。
　　(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
　　再次启动看看
　　[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
　　从关闭和启动日志中看,相对使用kill -4 而言，使用kill -2 更安全些。
　　(3) 使用db.shutdownServer()关闭mongodb数据库
　　[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 ~]$
　　查看关闭日志
　　[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 ~]$
　　再次启动看看
　　[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
　　可见,使用db.shutdownServer()和使用kill -2 比较放心些。所以我们最好能采用这两种的其中一个即可。
　　7.总结
　　本文档是基于目前相对较新的版本在测试过境中搭建的过程,而且是单机环境。目的是从头开始尝试
　　mongodb这种NoSQL数据库的使用。个人看重的除了mongodb自身的优势外,最喜欢它的复制集和分片功能。
　　在这两点上,目前关系型数据库实现起来相对较复杂，不易维护管理。