Server

How to set up Nagios for server infrastructure monitoring, covering host and service checks, alert notifications, and SLA uptime tracking.…

Continuing the Chef series with cookbook development: writing recipes, defining resources, setting attributes, and building out run lists fo…

Getting started with Chef configuration management: understanding nodes, cookbooks, recipes, and how the Chef client and server work togethe…

Diagnosing SFTP and port connectivity failures using PortQry on Windows and nmap, nc, and ss on Linux to identify blocked or misconfigured p…

How a production ingestion server failure caused by a full disk was diagnosed, and how a pre-flight check script was built to prevent it fro…

Part 2 of building a private Ubuntu cloud: creating and registering MAAS nodes for bare-metal provisioning and automated deployment on your …

How to clone a live AWS EC2 instance as an AMI snapshot to replicate an existing environment exactly, without interrupting the running workl…

How to install, configure, and secure a vsftpd FTP server on Ubuntu, covering user access controls and basic hardening for a self-hosted fil…

Preparing for the RHCE exam: focusing on command-line tools, hands-on lab practice, and the practical skills Red Hat tests in the performanc…