Install MediaWiki as Wikipedia in Linux CentOS 7

System Requirements

MediaWiki requires PHP 5.5.9+ and either MySQL 5.0.2+, MariaDB, or one of the other three possible stores.

Install Web Server, PHP, and Database

To run MediaWiki, make sure you already have PHP 5.5.9+ and MySQL 5.0.2+ running in your server. You can read all related installations in below links.

Install Apache Web Server, PHP & MySQL

Install Apache Web Server, PHP & MySQL on CentOS 7 --> https://hostadvice.com/how-to/how-to-install-lamp-stack-on-centos-7/

Install PHP mbstring

Install PHP mbstring on CentOS 7 --> $ yum install php-mbstring

Install PHPMyAdmin

Install PHPMyAdmin on CentOS 7 --> https://www.hostinger.com/tutorials/how-to-install-phpmyadmin-on-centos-7/

Prepare MediaWiki Sources

Download MediaWiki 1.27.0

The last stable MediaWiki can be downloaded from MediaWiki.

wget https://releases.wikimedia.org/mediawiki/1.27/mediawiki-1.27.0.tar.gz

Put Media Wiki in Web Server

As example, if we're using Centos 7, the web server path is in /var/www/html/.

mv mediawiki-1.27.0.tar.gz /var/www/html/

Extract the File

Extract the tar file and rename it with your wiki name, as example named with wikipedia.

tar xvzf mediawiki-1.27.0.tar.gz

mv /var/www/html/mediawiki-1.27.0 /var/www/html/wikipedia

Run the MediaWiki Installation

Open MediaWiki index.php page at http://[web_server_address]/wikipedia/index.php and follow the installation requirement there.

Troubleshooting

Problem 1 : LocalSettings.php file not readable

Solution : https://stackoverflow.com/questions/29363757/localsettings-php-not-readable-even-if-i-set-permission-to-777

Problem 2 : First login Error (Session Hijacking Protection)

Solution : Change $wgMainCacheType from CACHE_ACCEL to CACHE_ANYTHING as suggested above in LocalSettings.php appears to be the fix.

Problem 3 : upload File Error (LocalFileLockError)

Solution : Run $ sudo setenforce 0 and try again.