Logging Monitoring

How to Configure MySQL Binary Log on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure MySQL Binary Log on Debian 9

Introduction How to Configure MySQL Binary Log on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 9. […]

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FreeBSD 12 — linux-c6-libxml — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — linux-c6-libxml — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libxml2 — Enforce the reader to run in constant memory Related CVEs: CVE-2013-2877 CVE-2014-0191 CVE-2014-3660 CVE-2015-1819 Upstream summary: Daniel Veilland reports: Enforce the reader to run in constant memory. One […]

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openSUSE Tumbleweed — ssdp-responder — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — ssdp-responder — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory Related CVEs: CVE-2019-14323 Upstream summary: SSDP Responder 1.x through 1.5 mishandles incoming network messages, leading to a stack-based buffer overflow by 1 byte. This results in a crash of the server, […]

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Common Problems 117931

Ubuntu 18.04 Black Screen After Login

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 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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FreeBSD 12 — postgresql93-client — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — postgresql93-client — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: PostgreSQL vulnerabilities Related CVEs: CVE-2016-5423 CVE-2016-5424 Upstream summary: The PostgreSQL project reports: Security Fixes nested CASE expressions + database and role names with embedded special characters CVE-2017-7484: selectivity estimators bypass […]

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Common Problems 116059

Ubuntu 26.04 LTS – system clock drifts because systemd-timesyncd cannot sync

🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Ubuntu 26.04 LTS Ubuntu 26.04 Ubuntu 26.04.1 📖 ~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 […]

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How to Tune Kernel Parameters with sysctl on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Tune Kernel Parameters with sysctl on Debian 9

Introduction Deploying tune kernel parameters with sysctl on debian 9 on a Debian 9 Stretch machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You […]

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Common Problems 113596

Windows Server 2012 R2 – BitLocker boot-start filter driver delays startup – Fix and Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 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 […]

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FreeBSD 12 — ar-openoffice — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — ar-openoffice — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: openoffice — DOC document heap overflow vulnerability Related CVEs: CVE-2004-0752 CVE-2005-0941 Upstream summary: AD-LAB reports that a heap-based buffer overflow vulnerability exists in OpenOffice's handling of DOC documents. When reading […]

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How to Install Icinga 2 on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install Icinga 2 on RHEL 10

Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying install icinga 2 both straightforward and auditable. This tutorial covers the complete procedure for how to Install Icinga 2 on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. Prerequisites You will need: […]

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