Capacity Planning

How to Install Loki for Log Aggregation on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install Loki for Log Aggregation on RHEL 10

Introduction How to Install Loki for Log Aggregation 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 is […]

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How to Set Up Software RAID with mdadm on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Configure Logrotate on Ubuntu 26.04

Logrotate prevents log files from consuming all available disk space by automatically rotating, compressing, and deleting old log files. Ubuntu uses logrotate by default for system logs. This guide configures logrotate for system and custom application logs on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS A user with […]

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Common Problems 116121

Ubuntu 26.04 LTS – high CPU usage from Tracker Miner – Fix & Prevention

🟢 Low   ⏱ 5–30 min  Last verified: 11 July 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 Install ArgoCD on RHEL 10 Kubernetes — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install ArgoCD on RHEL 10 Kubernetes

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

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How to Configure cgroups v2 on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Configure cgroups v2 on RHEL 10

Introduction This tutorial demonstrates how to Configure cgroups v2 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 114576

High CPU Usage by kswapd on RHEL 9

🟡 Medium   ⏱ 5–30 min  Last verified: 2 July 2026 📖 ~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 References & Further […]

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How to Set Resource Limits with /etc/security/limits.conf on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Set Resource Limits with /etc/security/limits.conf on RHEL 10

Introduction This tutorial demonstrates how to Set Resource Limits with /etc/security/limits.conf 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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Common Problems 115951

Ubuntu 26.04 LTS – kernel panic caused by missing initramfs – Fix & Prevention

🔴 Critical   ⏱ 5–30 min  Last verified: 30 June 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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Common Problems 114547

auditd Stops Logging Because Disk Threshold Is Hit

🟡 Medium   ⏱ 5–30 min  Last verified: 28 June 2026 📖 ~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 References & Further […]

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Common Problems 115958

journalctl shows persistent disk pressure from logs

🟡 Medium   ⏱ 5–30 min  Last verified: 27 June 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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