How to Register a GitHub Actions Self-Hosted Runner on RHEL 7 GitHub Actions is a CI/CD platform built directly into GitHub, and while GitHub provides hosted runners for common workflows, there are many scenarios where you need to run workflows on your own infrastructure: accessing internal services not exposed to the internet, using specific hardware […]
How to Set Up Hyper-V Live Migration on Windows Server 2012 R2 Hyper-V Live Migration allows a running virtual machine to be moved from one Hyper-V host to another with no perceptible downtime — typically under a second of network interruption. This capability is essential for performing host maintenance, balancing VM workloads across servers, and […]
Disk encryption is a critical layer of defense-in-depth for any Linux server handling sensitive data. LUKS (Linux Unified Key Setup) is the standard on-disk format for Linux disk encryption, and cryptsetup is the user-space tool that manages it. On RHEL 8, LUKS2 is the default format, bringing improved metadata handling, larger headers, and support for […]
Ceph is a unified, distributed storage system that simultaneously provides object, block, and file storage on commodity hardware. It eliminates single points of failure through replication and erasure coding, and scales linearly by adding nodes. The cephadm tool, introduced in Ceph Octopus, simplifies cluster deployment by using containers (Podman on RHEL 8) to manage Ceph […]
cAdvisor (Container Advisor) is an open-source daemon from Google that collects, aggregates, and exports real-time resource usage and performance metrics for every running container on a host. Unlike Node Exporter, which reports host-level statistics, cAdvisor descends into cgroup hierarchies to expose per-container CPU, memory, network, and filesystem metrics in Prometheus format. On RHEL 8 with […]
Introduction FreeBSD 12 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up set up gitlab runner on freebsd 12 on FreeBSD 12 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux […]
GitLab Community Edition is a full-featured, self-hosted DevOps platform combining Git repository management, issue tracking, CI/CD pipelines, and a container registry in a single application. Running GitLab CE on RHEL 8 gives you complete control over your source code and pipeline infrastructure without relying on third-party SaaS providers. This tutorial covers installing GitLab CE from […]
Introduction This tutorial covers How to Set Up K3s Lightweight Kubernetes on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Step 1 — Disable Swap swapoff -a sed -i ‘/ […]
Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up install sqlite3 on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully and the resulting […]
How to Configure BGP Routing with BIRD on RHEL 7 Border Gateway Protocol (BGP) is the routing protocol that underpins the modern internet, enabling routers in different autonomous systems to exchange network reachability information. While large-scale BGP deployments typically run on dedicated hardware, Linux systems running RHEL 7 can participate in BGP routing using software […]
