MariaDBApacheLAMP
LAMPis a combination of operating system and open-source software stack. The acronym LAMP is derived from first letters of Linux, Apache HTTP Server, MySQL or MariaDB database, and PHP/Perl/Python.
In this tutorial, let us install LAMP server onUbuntu 14.04 Serveredition. My testbox hostname and IP address areserver.unixmen.localand192.168.1.2/24respectively.
Install Apache
Apacheis an open-source multi-platform web server. It provides a full range of web server features including CGI, SSL and virtual domains.
To install Apache, enter the following command from your terminal:
sudo apt-get install apache2
Test Apache:
Open your web browser and navigate tohttp://localhost/orhttp://server-ip-address/.
Install MySQL
MySQLis a relational database management system (RDBMS) that runs as a server providing multi-user access to a number of databases, though SQLite probably has more total embedded deployments
sudo apt-get install mysql-server mysql-client
During installation, you’ll be asked to setup the MySQL root user password. Enter the password and click Ok.
Re-enter the password.
Now, MySQL server has been installed.
You can verify the MySQL server status using command:
sudo service mysql status
Sample output:
mysql start/running, process 3470
Note:If you want to use MariaDB instead of MySQL, then follow these steps.
Install MariaDB
MariaDBis a drop in replacement for MySQL. It is a robust, scalable and reliable SQL server that comes rich set of enhancements.
First you have to remove existing MySQL packages if any. To completely uninstall MySQL along with its configuration files, enter the following command:
sudo apt-get purge mysql*
Run the following command to remove unwanted packages.
sudo apt-get autoremove
Now, addMariaDB repository. Run the following commands to add PPA. Hence, MariaDB 5.5 repository is not yet updated to 14.04, we can use the repository of Ubuntu 13.10 instead.
sudo apt-get install software-properties-commonsudo apt-key adv --recv-keys --keyserver hkp://keyserver.ubuntu.com:80 0xcbcb082a1bb943dbsudo add-apt-repository 'deb http://ftp.yz.yamagata-u.ac.jp/pub/dbms/mariadb/repo/5.5/ubuntu saucy main'
Update the software sources list and install MariaDB using following commands:
sudo apt-get update sudo apt-get install mariadb-server mariadb-client
During installation you will be asked to set mysql‘root’user password.
Re-enter password:
Check if mariadb is running or not, using the following command:
sudo service mysql status
Sample output:
* /usr/bin/mysqladminVer 9.0 Distrib 5.5.37-MariaDB, for debian-linux-gnu on i686Copyright (c) 2000, 2014, Oracle, Monty Program Ab and others.Server version5.5.37-MariaDB-1~saucy-logProtocol version10ConnectionLocalhost via UNIX socketUNIX socket/var/run/mysqld/mysqld.sockUptime:2 min 18 secThreads: 1Questions: 566Slow queries: 0Opens: 337Flush tables: 4Open tables: 24Queries per second avg: 4.101
Install PHP
PHP(recursive acronym for PHP: Hypertext Preprocessor) is a widely used open-source general purpose scripting language that is especially suited for web development and can be embedded into HTML.
Install PHP with following command:
sudo apt-get install php5 php5-mysql libapache2-mod-php5
Test PHP
Create a sample“testphp.php”file in Apache document root folder.
sudo nano /var/www/html/testphp.php
Add the following lines.
<?phpphpinfo ();?>
Restart apache2 service:
sudo service apache2 restart
Navigate tohttp://server-ip-address/testphp.php. It will display all the details about php such as version, build date and commands etc.
If you want to install all php modules, enter the commandsudo apt-get install php*and restart the apache2 service. To verify the modules, open web browser and navigate tohttp://server-ip-address/testphp.php. You will able to see all installed php modules.
Manage MySQL Databases (Optional)
Install phpMyAdmin
phpMyAdminis a free open-source web interface tool used to manage your MySQL databases. It is available in the Official Debian repositories. So install it with command:
sudo apt-get install phpmyadmin
Select the Web server you use, in my case it is apache2.
Select Yes to configure database for phpmyadmin wjth dbconfig-common.
Enter password of the database’s administrative user.
Enter MySQL application password phpmyadmin.
Re-enter the password.
Success, phpMyAdmin installation has been completed now.
Access phpMyAdmin Web Console
Now you can access the phpmyadmin console by navigating tohttp://server-ip-address/phpmyadmin/from your browser.
Enter your MySQL username and password which you have given in previous steps. In my case its “root” and “ubuntu”.
You will be redirected to PhpMyAdmin main web interface.
Now you can manage your MySQL databases from phpMyAdmin web interface.
That’s it. Your LAMP server is up and running now.

TograntpermissionstonewMySQLusers,followthesesteps:1)AccessMySQLasauserwithsufficientprivileges,2)CreateanewuserwiththeCREATEUSERcommand,3)UsetheGRANTcommandtospecifypermissionslikeSELECT,INSERT,UPDATE,orALLPRIVILEGESonspecificdatabasesortables,and4)

toadduserInmysqleffect和securly,跟隨台詞:1)USEtheCreateUserStattoDaneWuser,指定thehostandastrongpassword.2)GrantNecterAryAryaryPrivilegesSustherthing privilegesgeStatement,usifementStatement,adheringtotheprinciplelastprefilegege.3)

toaddanewuserwithcomplexpermissionsinmysql,loldtheSesteps:1)創建eTheEserWithCreateuser'newuser'newuser'@''localhost'Indedify'pa ssword';。 2)GrantreadAccesstoalltablesin'mydatabase'withGrantSelectOnMyDatabase.to'newuser'@'localhost';。 3)GrantWriteAccessto'

MySQL中的字符串數據類型包括CHAR、VARCHAR、BINARY、VARBINARY、BLOB、TEXT,排序規則(Collations)決定了字符串的比較和排序方式。 1.CHAR適合固定長度字符串,VARCHAR適合可變長度字符串。 2.BINARY和VARBINARY用於二進制數據,BLOB和TEXT用於大對像數據。 3.排序規則如utf8mb4_unicode_ci忽略大小寫,適合用戶名;utf8mb4_bin區分大小寫,適合需要精確比較的字段。

最佳的MySQLVARCHAR列長度選擇應基於數據分析、考慮未來增長、評估性能影響及字符集需求。 1)分析數據以確定典型長度;2)預留未來擴展空間;3)注意大長度對性能的影響;4)考慮字符集對存儲的影響。通過這些步驟,可以優化數據庫的效率和擴展性。

mysqlblobshavelimits:tinyblob(255bytes),blob(65,535 bytes),中間佈洛布(16,777,215個比例),andlongblob(4,294,967,967,295 bytes).tousebl觀察:1)考慮pperformance impactsandSandStorLageBlobSextern; 2)管理backbackupsandreplication carecration; 3)usepathsinst

自動化在MySQL中創建用戶的最佳工具和技術包括:1.MySQLWorkbench,適用於小型到中型環境,易於使用但資源消耗大;2.Ansible,適用於多服務器環境,簡單但學習曲線陡峭;3.自定義Python腳本,靈活但需確保腳本安全性;4.Puppet和Chef,適用於大規模環境,複雜但可擴展。選擇時需考慮規模、學習曲線和集成需求。

是的,YouCansearchInIdeAblobInMysqlusingsPecificteChniques.1)轉換theblobtoautf-8StringWithConvertFunctionWithConvertFunctionandSearchUsiseLike.2)forCompresseBlysBlobs,useuncompresseblobs,useuncompressbeforeconversion.3)expperformance impperformance imptactSandDataEcoding.4)


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