Micro Services

Installation on CentOS 7

Installation instructions will vary based on the Linux distribution used. The following guide describes installation on CentOS 7 (in 2022), and will vary. Use the below as a guide and adapt to the specific installation scenario. This guide assumes that the service will be accessible at example.com.

1. Start with bare CentOS 7 installation (with httpd installed)
2. Create web root for service “mkdir /var/www/example.com”
3. Create a virtual host for the service “vim /etc/httpd/conf.d/example.com” with the following text…

   <VirtualHost *:80> 
     ServerName example.com 
   
     Redirect / https://example.com/ 
   </VirtualHost> 
   
   <VirtualHost *:443> 
     ServerName example.com 
     DocumentRoot /var/www/example.com/public 
   
     SSLEngine on 
     SSLCertificateFile /etc/httpd/ssl/example.com.crt 
     SSLCertificateKeyFile /etc/httpd/ssl/example.com.key
   
     <IfModule mod_security2.c>
       SecRuleEngine Off
     </IfModule>
   
     <Directory /var/www/example.com/public>
       Options Indexes FollowSymLinks
       AllowOverride all
       Require all granted
     </Directory> 
   </VirtualHost>

4. Install TLS certificate as indicated in configuration above
5. Disable mod_nss (unused, mostly deprecated) “yum remove mod_nss”
6. Enable Apache2 “systemctl enable apache2”
7. Start Apache2 “service httpd start”
8. Confirm Apache2 is accessible via web browser
9. Remove legacy PHP 5.4 (yum remove php*)
10. Install modern PHP 8.1 via following commands…

    yum -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm 
    yum update 
    yum -y install https://rpms.remirepo.net/enterprise/remi-release-7.rpm 
    yum-config-manager --disable 'remi-php*' 
    yum-config-manager --enable remi-php81 
    yum -y install php php-{cli,fpm,mysqlnd,zip,devel,gd,mbstring,curl,xml,pear,bcmath,json,opcache,redis,memcache}

11. Verify PHP 8.1 is installed “php -v”
12. Install PHP Composer via following commands…

    php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');" 
    php -r "if (hash_file('sha384', 'composer-setup.php') === '55ce33d7678c5a611085589f1f3ddf8b3c52d662cd01d4ba75c0ee0459970c2200a51f492d557530c71c15d8dba01eae') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;" 
    php composer-setup.php 
    php -r "unlink('composer-setup.php');" 
    mv composer.phar /usr/bin/composer

13. Verify Composer installation “composer –version”
14. Restart Apache2 to apply changes “service httpd restart”
15. Remove included MariaDB (conflicts with MySQL) “yum remove mariadb*”
16. Download MySQL 8 repository “wget https://repo.mysql.com/mysql80-community-release-el7-6.noarch.rpm”
17. Install MySQL GPG key “rpm –import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022″
18. Install repository “yum install mysql80-community-release-el7-6.noarch.rpm”
19. Install MySQL “yum install mysql-community-server”
20. Enable MySQL “service enable mysqld”
21. Start MySQL “service mysqld start”
22. Configure MySQL as desired. Create a user with a secure password and an empty database for the service
23. Clone application into previously created web root
24. Upload or create .env file from .env.sample file. Update with applicable configuration settings for database.
25. Generate a new crypto key “php artisan key:generate”
26. Ensure webserver user owns service directory “chown -R www-data:www-data /var/www/example.com”
27. Run database migrations “php artisan migrate”
    
28. Confirm service is available via web browser