Logging Monitoring

Common Problems 112956

Windows Server 2016 – Group Policy denied due to filtering or WMI scope errors – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 5 October 2020 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 […]

Read more
Common Problems 113447

Windows Server 2012 R2 — DISM RestoreHealth fails because component store is corrupt and unrepairable — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 5 October 2020 Affected versions: Windows Server 2012 R2 📖 ~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 […]

Read more
How to Tune System Performance with tuned on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Tune System Performance with tuned on Oracle Linux 8

Introduction This tutorial demonstrates how to Tune System Performance with tuned 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 […]

Read more
How to Monitor Docker with cAdvisor on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Monitor Docker with cAdvisor on FreeBSD 12

Introduction Deploying monitor docker with cadvisor on freebsd 12 on a FreeBSD 12 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard […]

Read more
Oracle Linux 8 — curl — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — curl — security and stability fixes — required update (ELSA-2020-4599)

🟡 Medium   ⏱ 10–30 min  Last verified: 4 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4599 Related CVEs: CVE-2020-8177 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

Read more
Common Problems 121521

Debian 9 – resolv.conf Keeps Reverting and DNS Fails – Resolver Control

🟠 High   ⏱ 5–30 min  Last verified: 4 October 2020 Affected versions: Debian 9 📖 ~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 & […]

Read more
Common Problems 118022

Kernel Panic After Dist-upgrade

🟡 Medium   ⏱ 5–30 min  Last verified: 4 October 2020 📖 ~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 […]

Read more
How to Set Up Virtual Desktop Infrastructure (VDI) on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Set Up Virtual Desktop Infrastructure (VDI) on Windows Server 2012 R2

How to Set Up Virtual Desktop Infrastructure (VDI) on Windows Server 2012 R2 Virtual Desktop Infrastructure (VDI) provides each user with their own dedicated virtual machine desktop, as opposed to session-based desktops where multiple users share the same server OS instance. Windows Server 2012 R2 RDS supports two VDI models: Pooled Virtual Desktops (users get […]

Read more
How to Set Up Istio Service Mesh on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up Istio Service Mesh on Oracle Linux 8

Introduction Setting up set up istio service mesh on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up Istio Service Mesh on Oracle Linux 8, with all the commands you need, the SELinux and firewalld […]

Read more
SLES 15 — xtrans — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — xtrans — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 4 October 2020 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2023:3189-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-25697 Upstream summary: A privilege escalation flaw was found in the Xorg-x11-server due to a lack of authentication for X11 clients. This flaw allows an […]

Read more
CHAT