Backup
LVM Snapshots for Consistent Server Backups on Linux
Backing up a database while it is running creates a problem most people don’t think about until it…
Category
Rocky Linux
Containers
Rancher Projects, Namespaces, and RBAC Setup
Kubernetes RBAC works, but it gets tedious fast when you’re managing multiple teams across dozens of namespaces. Rancher…
Containers
Install Rancher Server on RKE2 (HA Production Setup)
Running Rancher as a single Docker container works for a lab. It does not work for production. One…
Containers
RKE2 High Availability: 3-Node Production Cluster on Rocky Linux 10
A single RKE2 server node works fine for labs and development, but production workloads need something more resilient.…
Containers
RKE2 Single Node Kubernetes Setup on Rocky Linux 10
RKE2 (also called RKE Government) is Rancher’s next-generation Kubernetes distribution built for security-conscious environments. Unlike K3s, which optimizes…
Containers
K3s Kubernetes Quickstart on Ubuntu 24.04 and Rocky Linux 10
K3s strips Kubernetes down to a single binary under 100MB. No etcd cluster, no cloud-controller bloat, no separate…
How To
Production rsync Backup with Systemd Timers on Linux
rsync is the most widely deployed file synchronization tool on Linux, and for good reason. It handles incremental…
How To
Restic Backup to S3-Compatible Storage on Linux
Restic takes a different approach to backups. Every piece of data is encrypted on the client before it…
How To
Set Up Bare Metal Disaster Recovery with ReaR on Linux
Most backup guides skip the part that actually matters: the restore. They show you how to tar your…
Networking
Network Bonding and Teaming on Rocky Linux / RHEL / Fedora
Network teaming and bonding combine multiple physical NICs into a single logical interface for redundancy or increased throughput.…
Dev
Configure JAVA_HOME on Rocky Linux / RHEL / Fedora
JAVA_HOME is the single environment variable that every Java tool checks first. Tomcat, Maven, Gradle, Elasticsearch, Jenkins, and…
Automation
Upgrade GitLab from 17.x to 18.x: Step-by-Step
GitLab 18 shipped with a hard PostgreSQL 16 requirement, removed the legacy git_data_dirs configuration, and enforced CI/CD job…