Saturday, 6 July 2019

Install LEMP Stack on RHEL 8 Server

Install LEMP Stack on RHEL 8 Server

LEMP is a popular software stack. LEMP is named after the first letter of four software that forms the Stack i.e. Linux, Nginx, MySQL and PHP. LEMP is used to deploy PHP based web applications with MySQL database backend. LEMP is a variation of original LAMP stack, where Apache HTTP Server is replaced by Nginx Web Server.

In this article, we will install LEMP stack on RHEL 8 server. To achieve this goal, we are installing MariaDB database, Nginx web server and PHP language support on a Red Hat Enterprise Linux (RHEL) 8 server.

 

This Article Provides:

     

    Environment Specification:

    We have installed a Red Hat Enterprise Linux (RHEL) 8 virtual machine with following specifications.

    • CPU - 3.4 Ghz (2 cores)
    • Memory - 2 GB
    • Storage - 20 GB
    • Hostname - rhel-8-lemp.example.com
    • IP Address - 192.168.116.165/24
    • Operating System - Red Hat Enterprise Linux (RHEL) 8

    We have also configured a Local YUM/DNF repository on our RHEL 8 server, so we can install required software without an active Red Hat subscription.

     

    Installing MariaDB 10.3 Database on RHEL 8 Server:

    Connect with rhel-8-lemp.example.com using ssh as root user.

    MariaDB Server 10.3 is available in RHEL 8 local AppStream repository. Therefore, we can install it easily using dnf command.

    [root@rhel-8-lemp ~]# dnf install -y mariadb-server ... Installed: mariadb-server-3:10.3.11-1.module+el8+2765+cfa4f87b.x86_64 mariadb-backup-3:10.3.11-1.module+el8+2765+cfa4f87b.x86_64 mariadb-gssapi-server-3:10.3.11-1.module+el8+2765+cfa4f87b.x86_64 mariadb-server-utils-3:10.3.11-1.module+el8+2765+cfa4f87b.x86_64 perl-IO-Socket-IP-0.39-5.el8.noarch perl-IO-Socket-SSL-2.060-2.el8.noarch perl-Mozilla-CA-20160104-7.el8.noarch mariadb-3:10.3.11-1.module+el8+2765+cfa4f87b.x86_64 mariadb-common-3:10.3.11-1.module+el8+2765+cfa4f87b.x86_64 mariadb-connector-c-3.0.7-1.el8.x86_64 mariadb-connector-c-config-3.0.7-1.el8.noarch mariadb-errmsg-3:10.3.11-1.module+el8+2765+cfa4f87b.x86_64 perl-DBD-MySQL-4.046-2.module+el8+2515+0650e81c.x86_64 perl-DBI-1.641-2.module+el8+2701+8f20fb82.x86_64 perl-Digest-1.17-395.el8.noarch perl-Digest-MD5-2.55-396.el8.x86_64 perl-Net-SSLeay-1.85-6.el8.x86_64 perl-URI-1.73-3.el8.noarch perl-libnet-3.11-3.el8.noarch perl-Carp-1.42-396.el8.noarch perl-Data-Dumper-2.167-399.el8.x86_64 perl-Encode-4:2.97-3.el8.x86_64 perl-Errno-1.28-416.el8.x86_64 perl-Exporter-5.72-396.el8.noarch perl-File-Path-2.15-2.el8.noarch perl-File-Temp-0.230.600-1.el8.noarch perl-Getopt-Long-1:2.50-4.el8.noarch perl-HTTP-Tiny-0.074-1.el8.noarch perl-IO-1.38-416.el8.x86_64 perl-MIME-Base64-3.15-396.el8.x86_64 perl-Math-BigInt-1:1.9998.11-5.el8.noarch perl-Math-Complex-1.59-416.el8.noarch perl-PathTools-3.74-1.el8.x86_64 perl-Pod-Escapes-1:1.07-395.el8.noarch perl-Pod-Perldoc-3.28-396.el8.noarch perl-Pod-Simple-1:3.35-395.el8.noarch perl-Pod-Usage-4:1.69-395.el8.noarch perl-Scalar-List-Utils-3:1.49-2.el8.x86_64 perl-Socket-4:2.027-2.el8.x86_64 perl-Storable-1:3.11-3.el8.x86_64 perl-Term-ANSIColor-4.06-396.el8.noarch perl-Term-Cap-1.17-395.el8.noarch perl-Text-ParseWords-3.30-395.el8.noarch perl-Text-Tabs+Wrap-2013.0523-395.el8.noarch perl-Time-Local-1:1.280-1.el8.noarch perl-Unicode-Normalize-1.25-396.el8.x86_64 perl-constant-1.33-396.el8.noarch perl-interpreter-4:5.26.3-416.el8.x86_64 perl-libs-4:5.26.3-416.el8.x86_64 perl-macros-4:5.26.3-416.el8.x86_64 perl-parent-1:0.237-1.el8.noarch perl-podlators-4.11-1.el8.noarch perl-threads-1:2.21-2.el8.x86_64 perl-threads-shared-1.58-2.el8.x86_64 psmisc-23.1-3.el8.x86_64 Complete!

    Enable and start MariaDB service.

    [root@rhel-8-lemp ~]# systemctl enable mariadb.service Created symlink /etc/systemd/system/mysql.service â /usr/lib/systemd/system/mariadb.service. Created symlink /etc/systemd/system/mysqld.service â /usr/lib/systemd/system/mariadb.service. Created symlink /etc/systemd/system/multi-user.target.wants/mariadb.service â /usr/lib/systemd/system/mariadb.service. [root@rhel-8-lemp ~]# systemctl start mariadb.service

    Configure and secure MariaDB database instance.

    [root@rhel-8-lemp ~]# mysql_secure_installation NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY! In order to log into MariaDB to secure it, we'll need the current password for the root user. If you've just installed MariaDB, and you haven't set the root password yet, the password will be blank, so you should just press enter here. Enter current password for root (enter for none): OK, successfully used password, moving on... Setting the root password ensures that nobody can log into the MariaDB root user without the proper authorisation. Set root password? [Y/n] Y New password: Re-enter new password: Password updated successfully! Reloading privilege tables.. ... Success! By default, a MariaDB installation has an anonymous user, allowing anyone to log into MariaDB without having to have a user account created for them. This is intended only for testing, and to make the installation go a bit smoother. You should remove them before moving into a production environment. Remove anonymous users? [Y/n] Y ... Success! Normally, root should only be allowed to connect from 'localhost'. This ensures that someone cannot guess at the root password from the network. Disallow root login remotely? [Y/n] Y ... Success! By default, MariaDB comes with a database named 'test' that anyone can access. This is also intended only for testing, and should be removed before moving into a production environment. Remove test database and access to it? [Y/n] Y - Dropping test database... ... Success! - Removing privileges on test database... ... Success! Reloading the privilege tables will ensure that all changes made so far will take effect immediately. Reload privilege tables now? [Y/n] Y ... Success! Cleaning up... All done! If you've completed all of the above steps, your MariaDB installation should now be secure. Thanks for using MariaDB!

     

    Installing Nginx Web Server 1.14 on RHEL 8:

    Nginx 1.14 is available in local AppStream repository. Therefore, we can install it using dnf command.

    [root@rhel-8-lemp ~]# yum install -y nginx ... Installed: nginx-1:1.14.1-8.module+el8+2505+fe936cef.x86_64 gd-2.2.5-6.el8.x86_64 jbigkit-libs-2.1-14.el8.x86_64 libX11-1.6.7-1.el8.x86_64 libX11-common-1.6.7-1.el8.noarch libXau-1.0.8-13.el8.x86_64 libXpm-3.5.12-7.el8.x86_64 libjpeg-turbo-1.5.3-7.el8.x86_64 libtiff-4.0.9-13.el8.x86_64 libwebp-1.0.0-1.el8.x86_64 libxcb-1.13-5.el8.x86_64 nginx-all-modules-1:1.14.1-8.module+el8+2505+fe936cef.noarch nginx-filesystem-1:1.14.1-8.module+el8+2505+fe936cef.noarch nginx-mod-http-image-filter-1:1.14.1-8.module+el8+2505+fe936cef.x86_64 nginx-mod-http-perl-1:1.14.1-8.module+el8+2505+fe936cef.x86_64 nginx-mod-http-xslt-filter-1:1.14.1-8.module+el8+2505+fe936cef.x86_64 nginx-mod-mail-1:1.14.1-8.module+el8+2505+fe936cef.x86_64 nginx-mod-stream-1:1.14.1-8.module+el8+2505+fe936cef.x86_64 dejavu-fonts-common-2.35-6.el8.noarch dejavu-sans-fonts-2.35-6.el8.noarch fontconfig-2.13.1-3.el8.x86_64 fontpackages-filesystem-1.44-22.el8.noarch Complete!

    Enable and start Nginx service.

    [root@rhel-8-lemp ~]# systemctl enable nginx.service Created symlink /etc/systemd/system/multi-user.target.wants/nginx.service â /usr/lib/systemd/system/nginx.service. [root@rhel-8-lemp ~]# systemctl start nginx.service

    Allow HTTP service in Linux firewall.

    [root@rhel-8-lemp ~]# firewall-cmd --permanent --add-service=http success [root@rhel-8-lemp ~]# firewall-cmd --reload success

    Browse URL http://rhel-8-lemp.example.com in a client's browser.

    01-rhel-8-lemp-nginx-default-homepage

    Nginx web server is installed and working fine on RHEL 8.

     

    Installing PHP 7.2 on RHEL 8:

    PHP 7.2 is available in local AppStream repository. Therefore, we can install it using dnf command.

    [root@rhel-8-lemp ~]# dnf install -y php php-mysqlnd php-pdo php-gd php-mbstring php-fpm ... Installed: php-7.2.11-1.module+el8+2561+1aca3413.x86_64 php-fpm-7.2.11-1.module+el8+2561+1aca3413.x86_64 php-gd-7.2.11-1.module+el8+2561+1aca3413.x86_64 php-mbstring-7.2.11-1.module+el8+2561+1aca3413.x86_64 php-mysqlnd-7.2.11-1.module+el8+2561+1aca3413.x86_64 php-pdo-7.2.11-1.module+el8+2561+1aca3413.x86_64 apr-util-bdb-1.6.1-6.el8.x86_64 apr-util-openssl-1.6.1-6.el8.x86_64 apr-1.6.3-9.el8.x86_64 apr-util-1.6.1-6.el8.x86_64 httpd-2.4.37-10.module+el8+2764+7127e69e.x86_64 httpd-filesystem-2.4.37-10.module+el8+2764+7127e69e.noarch httpd-tools-2.4.37-10.module+el8+2764+7127e69e.x86_64 mod_http2-1.11.3-1.module+el8+2443+605475b7.x86_64 php-cli-7.2.11-1.module+el8+2561+1aca3413.x86_64 php-common-7.2.11-1.module+el8+2561+1aca3413.x86_64 mailcap-2.1.48-3.el8.noarch redhat-logos-httpd-80.7-1.el8.noarch Complete!

    Edit php-fpm configurations.

    [root@rhel-8-lemp ~]# vi /etc/php-fpm.d/www.conf

    Find and set following settings therein.

    user = nginx group = nginx listen.owner = nginx listen.group = nginx

    Start and enable php-fpm service.

    [root@rhel-8-lemp ~]# systemctl enable php-fpm.service Created symlink /etc/systemd/system/multi-user.target.wants/php-fpm.service â /usr/lib/systemd/system/php-fpm.service. [root@rhel-8-lemp ~]# systemctl start php-fpm.service

    Restart Nginx service to integrate PHP with Nginx.

    [root@rhel-8-lemp ~]# systemctl restart nginx.service

    Create a PHP file to check information about installed PHP modules.

    [root@rhel-8-lemp ~]# echo "<?php phpinfo() ?>" > /usr/share/nginx/html/info.php

    Browse URL http://rhel-8-lemp.example.com/info.php in a client's browser.

    02-rhel-8-lemp-phpinfo

    PHP 7.2 has been installed and running on RHEL 8.

    We have successfully installed LEMP stack on RHEL 8 server.

    Install LEMP Stack on RHEL 8 Server


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