How to Run GUI Applications Remotely over SSH with X11 Forwarding / Waypipe
Learn how to run Linux GUI applications remotely over SSH using X11 forwarding or Waypipe. Includes setup steps, CLI examples, performance tips, security advice, and comparison charts for choosing the right method. Table of Contents 🔈Introduction Running graphical Linux applications on a remote server and displaying them on your local machine can be transformative for […]
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, […]
Optimizing PostgreSQL for Zabbix 7.0 with TimescaleDB Compression
Optimize PostgreSQL for Zabbix 7.0 with TimescaleDB compression: guide to enable extensions, tune performance, implement retention policies, and scale time-series storage effectively. Table of Contents 🔈Introduction Monitoring large-scale IT environments with Zabbix 7.0 demands a database backend capable of efficient time-series data handling. By pairing PostgreSQL with TimescaleDB (a time-series extension for PostgreSQL) you gain native partitioning, […]
Monitoring Block I/O and Disk Wait Times Using iotop and iostat
Monitor and troubleshoot Linux disk I/O bottlenecks using iostat and iotop. Learn how to interpret %iowait, %util, await times and pinpoint heavy processes. Table of Contents 🔈Introduction Efficient storage performance is critical to a responsive Linux system. When block I/O becomes a bottleneck, overall performance suffers—databases slow down, applications stall, and CPUs sit idle while […]
Installing and using Collectd on RHEL 9 | CentOS 9
Learn how to install and configure Collectd on RHEL 9 and CentOS 9 for system performance monitoring. This step-by-step guide covers installation, setup, configuration, and usage to help you monitor system metrics efficiently. Table of Contents 🔈Introduction Monitoring system performance is crucial to maintaining the health and stability of your server environment. On RHEL 9 and CentOS 9, […]
Understanding Enterprise Network Infrastructure: From Perimeter to Core
A complete guide to enterprise network infrastructure—covering DMZ, firewalls, core networks, and hybrid cloud integration. Includes best practices, CLI examples, and design tables for IT professionals. Table of Contents 🔈Introduction In today’s digital enterprise, the network infrastructure is the foundation that supports communication, application delivery, and cybersecurity. As organizations scale and hybridize their environments, a […]
Securing MongoDB with TLS | SSL on RHEL 9
Learn how to secure MongoDB on RHEL 9 using TLS / SSL—step-by-step instructions for certificate setup, configuring mongod, enforcing client authentication, and troubleshooting. Table of Contents 🔈Introduction Transport Layer Security (TLS) / SSL is essential to protect MongoDB traffic from eavesdropping and man-in-the-middle attacks. In this guide, you’ll learn how to enable TLS for mongod or […]
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 […]
Harden SSH on Ubuntu 24.04: Disable Root, Use Key Auth, Restrict IPs
Learn how to harden SSH on Ubuntu 24.04. Disable root login, enforce SSH key authentication, and restrict IP access for maximum protection. Table of Contents 🔈Introduction Secure Shell (SSH) is the backbone of remote system management, but an exposed or misconfigured SSH service is a prime target for attackers. Ubuntu 24.04, as a modern Linux […]
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 […]