Troubleshooting

Common Problems 112501

Windows Server 2019 – HNS fails to create container network after policy changes – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 5 November 2020 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 GitLab CI/CD on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure GitLab CI/CD on Oracle Linux 8

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying configure gitlab ci/cd on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure GitLab CI/CD on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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How to Enable Remote Desktop on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Enable Remote Desktop on Windows Server 2016

How to Configure Windows Server 2016 Remote Desktop Remote Desktop Protocol (RDP) allows administrators to connect to a Windows Server 2016 machine remotely using a graphical interface. By default, RDP is disabled on a fresh installation of Windows Server 2016. This guide explains how to enable Remote Desktop, configure firewall rules, restrict access to specific […]

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How to Set Up a Private Docker Registry on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set Up a Private Docker Registry on RHEL 7

How to Set Up a Private Docker Registry on RHEL 7 Running a private Docker registry gives your team a secure, internal location to store and distribute container images without relying on Docker Hub or other public registries. Whether you are enforcing air-gapped security policies, reducing external bandwidth, or simply keeping proprietary application images off […]

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Oracle Linux 8 — NetworkManager security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — NetworkManager security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2021-4361)

🟡 Medium   ⏱ 10–30 min  Last verified: 4 November 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4361 Related CVEs: CVE-2020-13529 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Common Problems 118948

GRUB Rescue Prompt After Kernel Update on Ubuntu 14.04

🟡 Medium   ⏱ 5–30 min  Last verified: 4 November 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 […]

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openSUSE Tumbleweed — libblosc1 — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libblosc1 — vulnerability — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2020:2337-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-29367 Upstream summary: blosc2.c in Blosc C-Blosc2 through 2.0.0.beta.5 has a heap-based buffer overflow when there is a lack of space to write compressed data. […]

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How to Configure Kibana Dashboards on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure Kibana Dashboards on Oracle Linux 8

Introduction This tutorial demonstrates how to Configure Kibana Dashboards 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 […]

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