LEPP Stack is a high performance and robust software service stack, used in large systems where data read and write speeds are crucial. It is a variation of LAMP stack. In this variation, the Apache web server is replaced by Nginx and MySQL database is replaced by PostgreSQL.
In this article, we are installing LEPP Stack on Red Hat Enterprise Linux (RHEL) 8. We are using following LEPP stack components.
- L - Red Hat Enterprise Linux (RHEL) 8
- E - Nginx 1.14 Web Server
- P - PostgreSQL 10.6 Database Server
- P - PHP 7.2 Language Support
This Article Provides:
Environment Specification:
We have provisioned a RHEL 8 based virtual machine with following specifications.
- CPU - 3.4 Ghz (2 cores)
- Memory - 2 GB
- Storage - 20 GB
- Operating System - Red Hat Enterprise Linux (RHEL) 8
- Hostname - rhel-8-lepp.example.com
- IP Address - 192.168.116.165/24
A Local YUM/DNF repository is also configured, so we can install required packages without having an active Red Hat subscription.
Installing PostgreSQL 10.6 on RHEL 8 Server:
Connect with rhel-8-lepp.example.com using ssh as root user.
PostgreSQL Database Server 10.6 is available in our local AppStream repository. Therefore, we can install it using dnf command.
[root@rhel-8-lepp ~]# dnf install -y postgresql-server
Updating Subscription Management repositories.
Unable to read consumer identity
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Last metadata expiration check: 0:18:49 ago on Sun 07 Jul 2019 09:57:50 PM PKT.
Dependencies resolved.
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
postgresql-server
x86_64 10.6-1.module+el8+2469+5ecd5aae localyum_AppStream 5.1 M
Installing dependencies:
libpq x86_64 10.5-1.el8 localyum_AppStream 188 k
postgresql x86_64 10.6-1.module+el8+2469+5ecd5aae localyum_AppStream 1.5 M
Enabling module streams:
postgresql 10
Transaction Summary
================================================================================
Install 3 Packages
Total size: 6.7 M
Installed size: 27 M
Downloading Packages:
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Installing : libpq-10.5-1.el8.x86_64 1/3
Installing : postgresql-10.6-1.module+el8+2469+5ecd5aae.x86_64 2/3
Running scriptlet: postgresql-server-10.6-1.module+el8+2469+5ecd5aae.x8 3/3
Installing : postgresql-server-10.6-1.module+el8+2469+5ecd5aae.x8 3/3
Running scriptlet: postgresql-server-10.6-1.module+el8+2469+5ecd5aae.x8 3/3
Verifying : libpq-10.5-1.el8.x86_64 1/3
Verifying : postgresql-10.6-1.module+el8+2469+5ecd5aae.x86_64 2/3
Verifying : postgresql-server-10.6-1.module+el8+2469+5ecd5aae.x8 3/3
Installed products updated.
Installed:
postgresql-server-10.6-1.module+el8+2469+5ecd5aae.x86_64
libpq-10.5-1.el8.x86_64
postgresql-10.6-1.module+el8+2469+5ecd5aae.x86_64
Complete!
Initialize PostgreSQL database instance with following command.
[root@rhel-8-lepp ~]# postgresql-setup --initdb --unit postgresql
* Initializing database in '/var/lib/pgsql/data'
* Initialized, logs are in /var/lib/pgsql/initdb_postgresql.log
Enable and start PostgreSQL service.
[root@rhel-8-lepp ~]# systemctl enable postgresql.service
Created symlink /etc/systemd/system/multi-user.target.wants/postgresql.service â /usr/lib/systemd/system/postgresql.service.
[root@rhel-8-lepp ~]# systemctl start postgresql.service
Verify version of PostgreSQL database.
Due to security, the execution of PostgreSQL commands by root user is not permitted. Therefore, we have to switch user to postgres user to execute PostgreSQL commands.
[root@rhel-8-lepp ~]# su - postgres
[postgres@rhel-8-lepp ~]$ postgres --version
postgres (PostgreSQL) 10.6
PostgreSQL has been installed on Red Hat Enterprise Linux (RHEL) 8.
Installing Nginx 1.14 on RHEL 8:
Nginx 1.14 is available in local AppStream repository. Therefore, we are installing it using dnf command.
[root@rhel-8-lepp ~]# dnf 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
perl-Carp-1.42-396.el8.noarch
perl-Errno-1.28-416.el8.x86_64
perl-Exporter-5.72-396.el8.noarch
perl-File-Path-2.15-2.el8.noarch
perl-IO-1.38-416.el8.x86_64
perl-PathTools-3.74-1.el8.x86_64
perl-Scalar-List-Utils-3:1.49-2.el8.x86_64
perl-Socket-4:2.027-2.el8.x86_64
perl-Text-Tabs+Wrap-2013.0523-395.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-threads-1:2.21-2.el8.x86_64
perl-threads-shared-1.58-2.el8.x86_64
Complete!
Enable and start Nginx service.
[root@rhel-8-lepp ~]# 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-lepp ~]# systemctl start nginx.service
Allow HTTP service in Linux firewall.
[root@rhel-8-lepp ~]# firewall-cmd --permanent --add-service=http
success
[root@rhel-8-lepp ~]# firewall-cmd --reload
success
Browse URL http://rhel-8-lepp.example.com in a client's browser.
Nginx web server has been installed on Red Hat Enterprise Linux (RHEL) 8.
Installing PHP 7.2 on RHEL 8:
PHP 7.2 is available in local AppStream repository. Therefore, we can install php and relevant packages using dnf command.
[root@rhel-8-lepp ~]# dnf install -y php php-mysqlnd php-pdo php-gd php-mbstring php-fpm php-pgsql
...
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
php-pgsql-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-lepp ~]# vi /etc/php-fpm.d/www.conf
Find and set following directives therein.
user = nginx
group = nginx
listen.owner = nginx
listen.group = nginx
Adjust permissions on PHP directories.
[root@rhel-8-lepp ~]# chgrp nginx /var/lib/php/{opcache,session,wsdlcache}
Start and enable php-fpm service.
[root@rhel-8-lepp ~]# 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-lepp ~]# systemctl start php-fpm.service
Restart httpd.service to integrate PHP with Nginx web server.
[root@rhel-8-lepp ~]# systemctl restart nginx.service
Create a PHP script to check PHP modules.
[root@rhel-8-lepp ~]# echo "<?php phpinfo() ?>" > /usr/share/nginx/html/info.php
Browse URL http://rhel-8-lemp.example.com/info.php in a client's browser.
PHP 7.2 has been installed and running on Red Hat Enterprise Linux (RHEL) 8.
We have successfully installed LEPP stack on RHEL 8 server.
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