How to Configure Logrotate for Application Logs on RHEL 7 Log files are essential for diagnosing problems and auditing system activity, but left unmanaged they will silently consume all available disk space and eventually bring a server to a halt. Logrotate is the standard tool on RHEL 7 for automating log file rotation, compression, and […]
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 […]
Prometheus AlertManager handles alert routing, grouping, and silencing so that your monitoring stack delivers the right notifications to the right people at the right time. On RHEL 8, deploying AlertManager as a systemd service gives you a production-ready setup that starts automatically on boot and integrates cleanly with an existing Prometheus instance. This tutorial walks […]
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 […]
How to Back Up and Restore MySQL Databases with mysqldump on RHEL 7 Regular database backups are the single most important operational task for any MySQL administrator. mysqldump is the built-in logical backup utility that ships with every MySQL and MariaDB installation — it produces plain-text SQL files that can be compressed, transferred off-site, and […]
Border Gateway Protocol (BGP) is the routing protocol that powers the internet, exchanging routing information between autonomous systems (AS). On RHEL 8, the BIRD Internet Routing Daemon provides a lightweight, production-grade BGP implementation available through the EPEL repository. This tutorial walks through installing BIRD, writing a BGP configuration with neighbor relationships and route filters, verifying […]
How to Use rsync for Efficient File Synchronisation on RHEL 7 The rsync utility is the de facto standard for file synchronisation on Linux. Unlike a simple cp or scp, rsync transfers only the differences between source and destination, making it extraordinarily efficient for large datasets and incremental backups. On Red Hat Enterprise Linux 7, […]
How to Set Up a Complete DevSecOps Pipeline on RHEL 7 DevSecOps integrates security testing directly into every phase of the software delivery lifecycle rather than treating it as a final gate before production. The goal is to detect vulnerabilities, exposed secrets, and misconfigurations early — when they are cheap to fix — and to […]
How to Install Prometheus and Grafana on RHEL 7 Prometheus and Grafana form one of the most popular open-source monitoring stacks available today. Prometheus is a time-series database and scraping engine that collects metrics from instrumented targets, while Grafana provides a rich visualization layer on top of that data. Together they give you real-time dashboards, […]
Traefik is a modern cloud-native reverse proxy and load balancer that can automatically discover services, obtain and renew TLS certificates via Let’s Encrypt, and expose a real-time dashboard — all without restarting when configuration changes. Unlike Nginx or HAProxy, Traefik reads its routing rules from provider backends such as Docker labels, Kubernetes annotations, or plain […]
