Logging Monitoring

AlmaLinux 8 — qt5-qtcanvas3d — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — qt5-qtcanvas3d — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2021:4172 Related CVEs: CVE-2021-3481 Upstream summary: Qt is a software toolkit for developing applications. The following packages have been upgraded to a later upstream version: adwaita-qt (1.2.1), python-qt5 (5.15.0), qgnomeplatform (0.7.1), qt5 […]

Read more
Common Problems 112554

Windows Server 2019 — FSMO seizure recovery required after permanent loss of role holder — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 12 June 2021 Affected versions: Windows Server 2019 📖 ~2 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
FreeBSD 13 — apache22-event-mpm — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — apache22-event-mpm — multiple vulnerabilities (13 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 12 June 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: apache22 — chunk header parsing defect Related CVEs: CVE-2012-0833 CVE-2012-2687 CVE-2012-3499 CVE-2012-4558 CVE-2013-1862 CVE-2013-1896 CVE-2013-5704 CVE-2013-6438  +5 more Upstream summary: Apache Foundation reports: CVE-2015-3183 core: Fix chunk header parsing defect. […]

Read more
FreeBSD 12 — py38-numpy — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py38-numpy — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 June 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-numpy — Missing return-value validation of the function PyArray_DescrNew Related CVEs: CVE-2021-41495 Upstream summary: Numpy reports: At most call-sites for PyArray_DescrNew, there are no validations of its return, but an […]

Read more
Ubuntu 20.04 — tigervnc — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — tigervnc — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 June 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5965-1 Related CVEs: CVE-2020-26117 Upstream summary: It was discovered that TigerVNC mishandled TLS certificate exceptions. An attacker could use this vulnerability to impersonate any server after a client had added […]

Read more
Oracle Linux 8 — virt:kvm_utils — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — virt:kvm_utils — vulnerability — patch and remediation guide (ELSA-2022-9172)

🟠 High   ⏱ 15–60 min  Last verified: 12 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9172 Related CVEs: CVE-2021-3593 CVE-2021-3713 CVE-2020-29130 CVE-2021-3594 CVE-2021-3595 CVE-2021-20257 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

Read more
How to Configure DNS Server on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure DNS Server on Windows Server 2019

How to Configure DNS Server on Windows Server 2019 Domain Name System (DNS) is the backbone of both internet connectivity and Active Directory. Windows Server 2019 includes a full-featured DNS server role that supports forward and reverse lookup zones, dynamic DNS updates, DNS Security Extensions (DNSSEC), DNS policies, Response Rate Limiting (RRL), and DNS over […]

Read more
Oracle Linux 8 — Running dnf update glusterfs-* Command Fails to Upgrade Previously Installed Packages — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Running dnf update glusterfs-* Command Fails to Upgrade Previously Installed Packages

🟠 High   ⏱ 5–30 min  Last verified: 11 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug 30279840 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 […]

Read more
How to Set Up Link Aggregation (EtherChannel) on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Set Up Link Aggregation (EtherChannel) on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to set up link aggregation (etherchannel) on ibm aix 7.1 […]

Read more
AlmaLinux 8 — librhsm — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — librhsm — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2021:1689 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

Read more
CHAT