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Linux是一種免費使用和自由傳播的類UNIX操作系統,是一個基于POSIX的多用戶、多任務、支持多線程和多CPU的操作系統,使用Linux能運行主要的Unix工具軟件、應用程序和網絡協議。
Mongo DB 是目前在IT行業非常流行的一種非關系型數據庫(NOSQL),其靈活的數據存儲方式備受當前IT從業人員的青睞。Mongo DB很好的實現了面向對象的思想(OO思想),在Mongo DB中 每一條記錄都是一個Document對象。Mongo DB最大的優勢在于所有的數據持久操作都無需開發人員手動編寫SQL語句,直接調用方法就可以輕松的實現CRUD操作。
一、安裝配置mongodb
Step 1: 設置系統環境及確保缺省端口27107可用
###當前環境 # cat /etc/issue Red Hat Enterprise Linux Server release 6.5 (Santiago) # vi /etc/selinux/config SELINUX=disabled
Step 2: 下載安裝文件
下載地址: https://www.mongodb.org/downloads. 或者直接在命令提示符下使用curl命令下載 curl -O https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-3.0.6.tgz
Step 3: 解壓下載的文件
# pwd /usr/local/src # tar -xvf mongodb-linux-x86_64-rhel62-3.0.6.gz ###注,本文直接從網站下載,所以文件為.gz
Step 4: 復制解壓文件到運行目錄
# mkdir -p /var/lib/mongodb # cp -R -n /usr/local/src/mongodb-linux-x86_64-rhel62-3.0.6/. /var/lib/mongodb/
Step 5: 設置環境變量
e.g. export PATH=<mongodb-install-directory>/bin:$PATH # vi ~/.bash_profile export PATH=/var/lib/mongodb/bin:$PATH # source ~/.bash_profile
Step 6: 創建數據目錄
# mkdir -p /data/mongodata
二、啟動及驗證mongodb
###啟動mongo # mongod --dbpath /data/mongodata ###以下內容為啟動后輸出的相關信息 2015-10-28T10:03:33.100+0800 I JOURNAL [initandlisten] journal dir=/data/mongodata/journal 2015-10-28T10:03:33.101+0800 I JOURNAL [initandlisten] recover : no journal files present, no recovery needed 2015-10-28T10:03:33.264+0800 I JOURNAL [initandlisten] preallocateIsFaster=true 2.18 2015-10-28T10:03:33.398+0800 I JOURNAL [durability] Durability thread started 2015-10-28T10:03:33.398+0800 I JOURNAL [journal writer] Journal writer thread started 2015-10-28T10:03:33.401+0800 I CONTROL [initandlisten] MongoDB starting : pid=10191 port=27017 dbpath=/data/mongodata 64-bit host=java_2 2015-10-28T10:03:33.401+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended. 2015-10-28T10:03:33.401+0800 I CONTROL [initandlisten] 2015-10-28T10:03:33.402+0800 I CONTROL [initandlisten] 2015-10-28T10:03:33.402+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'. 2015-10-28T10:03:33.402+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 2015-10-28T10:03:33.402+0800 I CONTROL [initandlisten] 2015-10-28T10:03:33.402+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. 2015-10-28T10:03:33.402+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never' 2015-10-28T10:03:33.402+0800 I CONTROL [initandlisten] 2015-10-28T10:03:33.402+0800 I CONTROL [initandlisten] db version v3.0.6 2015-10-28T10:03:33.402+0800 I CONTROL [initandlisten] git version: 1ef45a23a4c5e3480ac919b28afcba3c615488f2 2015-10-28T10:03:33.402+0800 I CONTROL [initandlisten] build info: Linux ip-10-67-194-123 2.6.32-220.el6.x86_64 #1 SMP Wed Nov 9 08:03:13 EST 2011 x86_64 BOOST_LIB_VERSION=1_49 2015-10-28T10:03:33.402+0800 I CONTROL [initandlisten] allocator: tcmalloc 2015-10-28T10:03:33.402+0800 I CONTROL [initandlisten] options: { storage: { dbPath: "/data/mongodata" } } 2015-10-28T10:03:33.404+0800 I INDEX [initandlisten] allocating new ns file /data/mongodata/local.ns, filling with zeroes... 2015-10-28T10:03:33.491+0800 I STORAGE [FileAllocator] allocating new datafile /data/mongodata/local.0, filling with zeroes... 2015-10-28T10:03:33.491+0800 I STORAGE [FileAllocator] creating directory /data/mongodata/_tmp 2015-10-28T10:03:33.497+0800 I STORAGE [FileAllocator] done allocating datafile /data/mongodata/local.0, size: 64MB, took 0.001 secs 2015-10-28T10:03:33.511+0800 I NETWORK [initandlisten] waiting for connections on port 27017 ###停止mongo,直接使用ctrl + c ^C2015-10-28T10:09:21.510+0800 I CONTROL [signalProcessingThread] got signal 2 (Interrupt), will terminate after current cmd ends 2015-10-28T10:09:21.511+0800 I CONTROL [signalProcessingThread] now exiting 2015-10-28T10:09:21.511+0800 I NETWORK [signalProcessingThread] shutdown: going to close listening sockets... 2015-10-28T10:09:21.511+0800 I NETWORK [signalProcessingThread] closing listening socket: 5 2015-10-28T10:09:21.511+0800 I NETWORK [signalProcessingThread] closing listening socket: 6 2015-10-28T10:09:21.511+0800 I NETWORK [signalProcessingThread] removing socket file: /tmp/mongodb-27017.sock 2015-10-28T10:09:21.511+0800 I NETWORK [signalProcessingThread] shutdown: going to flush diaglog... 2015-10-28T10:09:21.511+0800 I NETWORK [signalProcessingThread] shutdown: going to close sockets... 2015-10-28T10:09:21.512+0800 I STORAGE [signalProcessingThread] shutdown: waiting for fs preallocator... 2015-10-28T10:09:21.512+0800 I STORAGE [signalProcessingThread] shutdown: final commit... 2015-10-28T10:09:21.512+0800 I JOURNAL [signalProcessingThread] journalCleanup... 2015-10-28T10:09:21.512+0800 I JOURNAL [signalProcessingThread] removeJournalFiles 2015-10-28T10:09:21.515+0800 I JOURNAL [signalProcessingThread] Terminating durability thread ... 2015-10-28T10:09:21.615+0800 I JOURNAL [journal writer] Journal writer thread stopped 2015-10-28T10:09:21.615+0800 I JOURNAL [durability] Durability thread stopped 2015-10-28T10:09:21.615+0800 I STORAGE [signalProcessingThread] shutdown: closing all files... 2015-10-28T10:09:21.618+0800 I STORAGE [signalProcessingThread] closeAllFiles() finished 2015-10-28T10:09:21.618+0800 I STORAGE [signalProcessingThread] shutdown: removing fs lock... 2015-10-28T10:09:21.618+0800 I CONTROL [signalProcessingThread] dbexit: rc: 0 ###修復啟動過程中的兩個警告,關于使用root用戶啟動mongo的警告先忽略 # echo "never" > /sys/kernel/mm/transparent_hugepage/enabled # echo "never" > /sys/kernel/mm/transparent_hugepage/defrag ###再次重啟,后置于后臺進程, # mongod --dbpath /data/mongodata & ###查看啟動后的進程 # ps -ef|grep mongo |grep -v grep root 11115 27956 0 10:11 pts/2 00:00:00 mongod --dbpath /data/mongodata # lsof -i:27017 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME mongod 11115 root 5u IPv4 50567119 0t0 TCP *:27017 (LISTEN) ###使用mongo連接到mongod # mongo MongoDB shell version: 3.0.6 connecting to: test 2015-10-28T10:14:30.685+0800 I NETWORK [initandlisten] connection accepted from 127.0.0.1:53907 #1 (1 connection now open) Server has startup warnings: 2015-10-28T10:11:49.217+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended. 2015-10-28T10:11:49.217+0800 I CONTROL [initandlisten] > help db.help() help on db methods db.mycoll.help() help on collection methods sh.help() sharding helpers rs.help() replica set helpers help admin administrative help help connect connecting to a db help help keys key shortcuts help misc misc things to know help mr mapreduce show dbs show database names show collections show collections in current database show users show users in current database show profile show most recent system.profile entries with time >= 1ms show logs show the accessible logger names show log [name] prints out the last segment of log in memory, 'global' is default use <db_name> set current database db.foo.find() list objects in collection foo db.foo.find( { a : 1 } ) list objects in foo where a == 1 it result of the last line evaluated; use to further iterate DBQuery.shellBatchSize = x set default number of items to display on shell exit quit the mongo shell > db.getCollection("version"); test.version > exit bye
三、mongodb相關工具
###在安裝文件下有README,描述了常用的mongodb相關命令行工具 # more /usr/local/mongodb/README MongoDB README Welcome to MongoDB! COMPONENTS bin/mongod - The database process. bin/mongos - Sharding controller. bin/mongo - The database shell (uses interactive javascript). UTILITIES bin/mongodump - MongoDB dump tool - for backups, snapshots, etc.. bin/mongorestore - MongoDB restore a dump bin/mongoexport - Export a single collection to test (JSON, CSV) bin/mongoimport - Import from JSON or CSV bin/mongofiles - Utility for putting and getting files from MongoDB GridFS bin/mongostat - Show performance statistics RUNNING For command line options invoke: $ ./mongod --help To run a single server database: $ mkdir /data/db $ ./mongod $ $ # The mongo javascript shell connects to localhost and test database by default: $ ./mongo > help DRIVERS Client drivers for most programming languages are available at mongodb.org. Use the shell ("mongo") for administrative tasks. ###獲取單個命令用法 # <command> --help # mongod --help|more Options: General options: -h [ --help ] show this usage information --version show version information # mongod --version db version v3.0.6 git version: 1ef45a23a4c5e3480ac919b28afcba3c615488f2
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