How to Monitor Kubernetes with Prometheus and Grafana on RHEL 7 Operating a Kubernetes cluster without monitoring is like running a production database without logs — you will only know something is wrong after an outage has already started. Prometheus is the de facto standard for Kubernetes metrics collection, using a pull-based model where it […]
Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying set up a lamp stack on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up a LAMP Stack on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the […]
🟡 Medium ⏱ 5–30 min Last verified: 24 April 2022 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]
Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure device drivers on ibm aix 7.1 on IBM […]
How to Configure System Center Virtual Machine Manager on Windows Server 2012 R2 System Center Virtual Machine Manager (SCVMM or VMM) is Microsoft’s comprehensive virtualization management platform that provides centralized control over Hyper-V hosts, private cloud infrastructure, VM deployment, network virtualization, and storage management. VMM 2012 R2 is purpose-built to work with Windows Server 2012 […]
Introduction How to Configure Kubernetes RBAC on CentOS Stream 9 on CentOS Stream 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is […]
Introduction Debian 11 Bullseye is built around the ethos of stability and free software. Setting up set up mongodb replica set on debian 11 on Bullseye leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bullseye freeze. Follow each step carefully […]
Pacemaker and Corosync together form the de facto high-availability (HA) cluster stack for Linux. Corosync provides the cluster messaging and quorum layer, while Pacemaker manages resources — ensuring that services like virtual IP addresses and web servers start, stop, and migrate between nodes according to defined constraints. On RHEL 8, both packages are available through […]
Introduction This tutorial demonstrates how to Install OpenShift CLI on CentOS Stream 9 on CentOS Stream 9. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered CentOS Stream 9 system with the default […]
Introduction Setting up configure hashicorp vault on centos stream 9 on a CentOS Stream 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure HashiCorp Vault on CentOS Stream 9, with all the commands you need, the SELinux and firewalld considerations to keep in […]
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