refactor: Remove RedHat/CentOS support, focus on Ubuntu/Debian

BREAKING CHANGE: Removed RedHat/CentOS/Rocky Linux support to improve stability

- Remove all RedHat/CentOS-specific code and variables
- Consolidate Ubuntu/Debian variables into single debian-family.yml
- Simplify CI/CD pipeline (remove CentOS tests)
- Remove unstable multi-OS complexity
- Update documentation to reflect Ubuntu/Debian focus
- Streamline playbooks for better maintainability

This change makes the project more stable and maintainable by focusing
on the most common server distributions (Ubuntu/Debian) instead of
trying to support multiple OS families with different package managers
and configurations.

vars/debian-family.yml

@@ -1,6 +1,6 @@
-# Ubuntu-specific variables
+# Ubuntu/Debian family variables
 ---
-# Package names for Ubuntu
+# Package names for Ubuntu/Debian systems
 packages:
   - nginx
   - mysql-server
@@ -37,3 +37,9 @@ nginx_sites_enabled: /etc/nginx/sites-enabled
 
 # MySQL paths
 mysql_config_path: /etc/mysql
+
+# Default PHP version
+php_version: "8.3"
+
+# System paths
+web_root: /var/www/html

vars/debian.yml

@@ -1,39 +0,0 @@
-# Debian-specific variables
----
-# Package names for Debian (similar to Ubuntu but may have version differences)
-packages:
-  - nginx
-  - mariadb-server
-  - php8.2-fpm
-  - php8.2-mysql
-  - php8.2-curl
-  - php8.2-gd
-  - php8.2-intl
-  - php8.2-mbstring
-  - php8.2-soap
-  - php8.2-xml
-  - php8.2-xmlrpc
-  - php8.2-zip
-  - python3-pymysql
-  - unzip
-
-# Service names
-mysql_service: mariadb
-nginx_service: nginx
-php_fpm_service: php8.2-fpm
-
-# Package manager
-package_manager: apt
-
-# PHP paths
-php_fpm_config_path: /etc/php/8.2/fpm
-php_cli_config_path: /etc/php/8.2/cli
-php_fpm_pool_path: /etc/php/8.2/fpm/pool.d
-
-# Nginx paths
-nginx_config_path: /etc/nginx
-nginx_sites_available: /etc/nginx/sites-available
-nginx_sites_enabled: /etc/nginx/sites-enabled
-
-# MySQL paths
-mysql_config_path: /etc/mysql

vars/redhat.yml

@@ -1,67 +0,0 @@
----
-# CentOS/RHEL/Rocky Linux specific variables
-ansible_python_interpreter: /usr/bin/python3
-
-# Package names
-nginx_package: nginx
-mysql_packages:
-  - mariadb-server
-  - mariadb
-  - python3-PyMySQL
-php_packages:
-  - php
-  - php-fpm
-  - php-mysqlnd  # Correct package name for CentOS
-  - php-gd
-  - php-xml
-  - php-mbstring
-  - php-curl
-  - php-zip
-  - php-intl
-  - php-soap
-  - php-opcache
-
-# Service names
-nginx_service: nginx
-mysql_service: mariadb
-php_fpm_service: php-fpm
-
-# PHP Configuration
-php_version: "8.1"  # Default PHP version for CentOS 9
-php_fpm_socket: /run/php-fpm/www.sock
-php_fpm_pool_dir: /etc/php-fpm.d
-php_ini_path: /etc/php.ini
-php_fpm_conf: /etc/php-fpm.d/www.conf
-
-# Nginx Configuration
-nginx_conf_dir: /etc/nginx
-nginx_sites_available: /etc/nginx/conf.d
-nginx_sites_enabled: /etc/nginx/conf.d
-nginx_user: nginx
-
-# MySQL Configuration
-mysql_conf_dir: /etc/mysql
-mysql_conf_file: /etc/my.cnf.d/mysql-server.cnf
-mysql_socket: /var/lib/mysql/mysql.sock
-mysql_pid_file: /var/run/mariadb/mariadb.pid
-mysql_log_error: /var/log/mariadb/mariadb.log
-
-# System paths
-web_root: /var/www/html
-log_dir: /var/log
-
-# Package manager
-package_manager: yum
-
-# Additional repositories needed
-epel_release: epel-release
-remi_release: "https://rpms.remirepo.net/enterprise/remi-release-{{ ansible_distribution_major_version }}.rpm"
-
-# SELinux booleans for web services
-selinux_booleans:
-  - httpd_can_network_connect
-  - httpd_execmem
-  - httpd_unified
-
-# Firewall service
-firewall_service: firewalld