VMware tutorial - IT technology blog
Posted inVMware

Configuring vCenter Server High Availability (vCenter HA): Eliminating the Single Point of Failure in Your vSphere Environment

A step-by-step guide to configuring vCenter Server High Availability (vCenter HA) on VCSA 8.0, covering the Active-Passive-Witness architecture, HA network configuration, failover testing, and practical operational tips from a production environment. Eliminate the single point of failure in your vSphere management layer with automatic failover in 4–8 minutes.
CentOS tutorial - IT technology blog
Posted inCentos

How to Use sosreport on CentOS Stream 9: Collect and Analyze System Information for Professional Troubleshooting

sosreport is Red Hat's official tool for collecting complete system information with a single command, replacing the need to run dozens of manual commands every time an incident occurs. This article compares different approaches to information gathering, weighs their pros and cons, and walks through a practical sosreport deployment on CentOS Stream 9 — including a script you can integrate directly into your incident response workflow.
Linux tutorial - IT technology blog
Posted inLinux

Landlock LSM on Linux: Sandbox Applications Without Root Using Built-in Kernel Security

Landlock LSM is a security module built into the Linux kernel since version 5.13, allowing applications to restrict their own filesystem access without root privileges. This post shares real-world deployment experience on Ubuntu 22.04 in production over six months: Python examples using ctypes, wrapping binaries with landlockrun, and combining with systemd hardening.