Capacity Planning

How to Install Prometheus and Grafana on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Prometheus and Grafana on RHEL 8

Prometheus and Grafana are two of the most widely adopted open-source tools for infrastructure monitoring and metrics visualization. Prometheus scrapes and stores time-series data from your systems, while Grafana turns that data into rich, interactive dashboards. Together they give RHEL 8 administrators a powerful, production-ready observability stack. This tutorial walks through installing both tools from […]

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Common Problems 113007

Windows Server 2016 — WSUS SUSDB index bloat causes timeouts on console and client scans — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 21 January 2021 Affected versions: Windows Server 2016 📖 ~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 Elasticsearch on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install Elasticsearch on Oracle Linux 8

Introduction This tutorial demonstrates how to Install Elasticsearch on Oracle Linux 8 on Oracle Linux 8. 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 Oracle Linux 8 system with the default AppStream […]

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Common Problems 125104

Oracle Linux 8 – Common Problem 014 – Diagnosis and Fix

🟡 Medium   ⏱ 5–30 min  Last verified: 16 January 2021 Affected versions: Oracle Linux 8 📖 ~3 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 112570

Windows Server 2019 Tiered Storage Spaces Not Rebalancing Hot Data Correctly – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 16 January 2021 Affected versions: Windows Server 2019 📖 ~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 Configure Nagios NRPE Agent on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Nagios NRPE Agent on Windows Server 2012 R2

How to Configure Nagios NRPE Agent on Windows Server 2012 R2 Nagios is one of the oldest and most widely deployed open-source infrastructure monitoring systems, and many organizations continue to rely on it for service and host monitoring. While Nagios traditionally monitored Windows servers via the NSClient++ agent, the NRPE (Nagios Remote Plugin Executor) protocol […]

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How to Schedule Tasks with Cron on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Schedule Tasks with Cron on Oracle Linux 8

Introduction How to Schedule Tasks with Cron on Oracle Linux 8 on Oracle Linux 8 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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Common Problems 115546

RHEL 7 journalctl Vacuum Not Configured in Long-Running Hosts

🟢 Low   ⏱ 5–30 min  Last verified: 14 January 2021 Affected versions: RHEL 7 📖 ~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 Docker Engine on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install Docker Engine on Oracle Linux 8

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying install docker engine on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Install Docker Engine on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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Common Problems 118018

Ubuntu 18.04 LTS – LVM volume reaches 100 percent causing service failures – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 11 January 2021 Affected versions: Ubuntu 18.04 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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