Capacity Planning

Common Problems 116023

Disk Full from System Logs on Ubuntu 26.04 LTS

🟠 High   ⏱ 5–30 min  Last verified: 10 May 2026 Affected versions: 26.04 📖 ~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 […]

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How to Configure Persistent Volumes in Kubernetes on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Configure Persistent Volumes in Kubernetes on RHEL 10

Introduction This tutorial demonstrates how to Configure Persistent Volumes in Kubernetes on RHEL 10 on RHEL 10. 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 RHEL 10 system with the default AppStream […]

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How to Use journalctl for System Log Analysis on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Use journalctl for System Log Analysis on RHEL 10

Introduction How to Use journalctl for System Log Analysis on RHEL 10 on RHEL 10 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 […]

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How to Secure MySQL 9 on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Back Up and Restore MySQL Databases on Ubuntu 26.04

Regular database backups are essential for disaster recovery. MySQL provides several tools — mysqldump for logical backups, mysqlpump for parallel dumps, and MySQL Shell’s dumpInstance for modern cloud-friendly backups. This guide covers backing up and restoring MySQL databases on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with MySQL […]

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How to Harden GRUB Bootloader on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Harden GRUB Bootloader on RHEL 10

Introduction This tutorial demonstrates how to Harden GRUB Bootloader on RHEL 10 on RHEL 10. 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 RHEL 10 system with the default AppStream repositories enabled. […]

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Common Problems 116011

Ubuntu 26.04 LTS – /var is full due to runaway logs – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 4 May 2026 Affected versions: Ubuntu 26.04 LTS 📖 ~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 […]

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How to Deploy a .NET Application on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Deploy a .NET Application on Oracle Linux 10

Introduction Oracle Linux 10 ships with a stable, security-hardened base that makes deploying deploy a .net application on oracle linux 10 both straightforward and auditable. This tutorial covers the complete procedure for how to Deploy a .NET Application on Oracle Linux 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]

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How to Set Up Ingress with NGINX in Kubernetes on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Set Up Ingress with NGINX in Kubernetes on RHEL 10

Introduction This tutorial demonstrates how to Set Up Ingress with NGINX in Kubernetes on RHEL 10 on RHEL 10. 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 RHEL 10 system with the […]

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How to Install PHP 8.3 on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install PHP 8.3 on RHEL 10

Introduction Setting up install php 8.3 on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Install PHP 8.3 on RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and how to validate the […]

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How to Install Forgejo on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install Forgejo on RHEL 10

Introduction This tutorial demonstrates how to Install Forgejo on RHEL 10 on RHEL 10. 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 RHEL 10 system with the default AppStream repositories enabled. Prerequisites […]

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