How to Check Software or Packages Version in Linux
When working with Linux environment, it’s important to know the versions of various software and packages installed on your system. Knowing the software version helps you stay informed about updates,…
Static Website Configuration for Nginx Web Server on CentOS 6 / CentOS 7
Q. How to configure and host static website on Nginx web server? A. Nginx is a lightweight web server and an alternative to Apache. In order to run a static…
How to Enable Logging for Email Subject Fields in Postfix Maillog
Postfix MTA basically just capture ‘From’ and ‘To’ field while the subject is not logged to the maillog. There are simple steps to enable logging of the e – mail…
How to Implement Basic Protection Against DDoS Attacks for Nginx
Distributed Denial of Service (DDoS) attacks can overwhelm a server’s resources, causing a website or application to become unresponsive or unavailable. Implementing basic protection against DDoS attacks is essential for…
How to Install and Update OpenSSL on CentOS
OpenSSL is a robust, widely-used toolkit that provides support for the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a general-purpose cryptography library. Installing and…
How to Enable and Grant Remote Access to MySQL Database Server
For reasons of security, remote access to MySQL database server is disabled by default because they are considered potential security threats. However, due to some reason, it is necessary to…
How to Calculate and List Sizes of MySQL / MariaDB Databases
Monitoring the size of your MySQL or MariaDB databases is crucial for optimizing database performance, managing storage capacity, and planning for future growth. In this short guide, we will show…
How to Install EPEL Yum Repository on Linux CentOS/RHEL: 8, 7, or 6
EPEL (Extra Packages for Enterprise Linux) is a repository that provides additional packages for RHEL (Red Hat Enterprise Linux) and its derivatives, such as CentOS and Oracle Linux. These additional…
How to Install Varnish 4 on CentOS 6 / CentOS 7
Varnish, an open-source web accelerator, is typically deployed in front of web servers like Apache or Nginx. It’s also known as an reverse proxy and is designed to serve static…
How to Pass Clients/Visitors IP Through Varnish to Nginx
Varnish is a powerful open-source software known as an HTTP reverse proxy typically run in front of web servers such as Apache or Nginx. Its primary function is to store…
How to Disable Autostart for a Service at boot on Linux CentOS 7 / RHEL 7
In CentOS 7 and Red Hat Enterprise Linux (RHEL) 7, you can disable the autostart of a service at boot time. This can be useful when you want to prevent…
How to Reclaim Free Space for Linux Root Partition using Zerofree
Managing disk space is a crucial task for webmasters and system administrators. Over time, the Linux root partition can get filled up with unnecessary data, leading to performance issues and…