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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 [iyunv@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中关闭NUMA [iyunv@aly-lww3 ~]# echo 0 > /proc/sys/vm/zone_reclaim_mode [iyunv@aly-lww3 ~]# sysctl -w vm.zone_reclaim_mode=0 vm.zone_reclaim_mode = 0 [iyunv@aly-lww3 ~]# echo never > /sys/kernel/mm/transparent_hugepage/enabled [iyunv@aly-lww3 ~]# echo never > /sys/kernel/mm/transparent_hugepage/defrag
[iyunv@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。 [iyunv@aly-lww3 ~]# useradd mongodb # 注意:mongodb这个用户名可以取别的 [iyunv@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. [iyunv@aly-lww3 ~]#
创建需要的目录，并修改权限,切换到mongodb用户模式 [iyunv@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 ~]$ 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 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 ~]$
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,自动回复了。
(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。
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