How to Secure Grafana Behind Nginx with SSL on RHEL 9 | CentOS 9
Learn how to secure Grafana behind Nginx with SSL on RHEL 9 / CentOS 9. This step-by-step blog post includes domain setup, reverse-proxy configuration, WebSocket support, firewall rules and troubleshooting tips. Table of Contents 🔈Introduction Securing your Grafana instance behind Nginx with SSL is a best-practice setup that ensures encrypted web traffic, clean domain-based access, […]
Configuring Bonded Interfaces and VLANs Together on RHEL 9
Learn how to configure a bonded interface with VLAN tagging on RHEL 9: a step‑by‑step guide using nmcli and nmstatectl, architectural best practices, troubleshooting tips, and examples. Table of Contents 🔈Introduction In modern data centers, combining interface bonding (link aggregation or redundancy) with 802.1Q VLAN tagging is a common requirement. In RHEL 9, you can create a bond […]
How to Build a Responsive Dashboard with React and Tailwind CSS on RHEL 9 | CentOS 9
Learn how to build a responsive React dashboard with Tailwind CSS on RHEL 9 or CentOS Stream 9. Includes CLI commands, deployment tips, and full code examples. Table of Contents 🔈Introduction Deploying modern frontend applications in enterprise environments like RHEL 9 or CentOS Stream 9 comes with its own challenges, from package management to security […]
Splunk Email Security Risk: How to Fix allowedDomainList Warning in alert_actions.conf
Learn how to fix the Splunk allowedDomainList security warning in alert_actions.conf. Prevent unauthorized alert emails and protect sensitive data by configuring domain restrictions correctly. Table of Contents 🔈Introduction Splunk administrators often encounter a critical security warning: ⚠️ Found an empty value for ‘allowedDomainList’ in the alert_actions.conf configuration file. This alert points to a significant security misconfiguration […]
Install Splunk on RHEL 9 or CentOS 9: A Beginner’s Guide
Learn how to install Splunk on RHEL9 or CentOS 9 with this beginner-friendly guide. Step-by-step instructions, CLI examples, and troubleshooting tips included. Table of Contents 🔈Introduction Splunk is one of the most widely-used platforms for searching, monitoring, and analyzing machine-generated big data. Whether you’re managing logs, monitoring system performance, or troubleshooting issues, Splunk is an […]
How to Monitor SSH Logins Using Auditd and Logwatch
Learn how to monitor SSH logins using Auditd and Logwatch on Linux. This step-by-step guide covers setup, configuration, log analysis, and reporting to enhance server security. Table of Contents 🔈Introduction Secure Shell (SSH) is one of the most widely used methods for remote server administration. Because it provides a gateway into critical infrastructure, monitoring SSH […]
Configure a Firewall using UFW (Ubuntu) and Firewalld (RHEL)
Learn how to configure a Linux firewall using UFW on Ubuntu and Firewalld on RHEL. Step-by-step CLI examples, best practices, and comparison tables included. Table of Contents 🔈Introduction Securing your Linux server is a critical step in system administration. One of the foundational layers of server security is the firewall — a system that controls […]
How to Configure SSL for Splunk Enterprise on RHEL 9 | CentOS 9
Learn how to configure SSL for Splunk Enterprise on RHEL 9 or CentOS 9. This detailed guide covers certificate generation, secure web interface setup, and SSL forwarding configuration for maximum security. Table of Contents 🔈Introduction Securing your Splunk Enterprise deployment is crucial, especially when dealing with sensitive data and enterprise-level monitoring. One of the most […]
Install MongoDB on RHEL 10 | CentOS 10
Learn how to install MongoDB (Community or Enterprise) on RHEL 10 / CentOS 10 with step‑by‑step repository setup, CLI commands, SELinux tips, and troubleshooting.” Table of Contents 🔈Introduction MongoDB is a leading NoSQL document database often used in production and development environments. If your organization is running RHEL 10 or CentOS 10, you may want to deploy […]
Fixing the Apache Error: Invalid Command ‘Header’
Learn how to fix the Apache error “Invalid command ‘Header’” when configuring a web server. Step-by-step guide with CLI commands, configuration examples, and troubleshooting tips to get your Apache server running smoothly. Table of Contents 🔈Introduction When running a web server, nothing is more frustrating than Apache failing to start because of a cryptic configuration […]