Logging Monitoring

How to Configure Redis Sentinel on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure Redis Sentinel on Debian 12

Introduction Deploying configure redis sentinel on debian 12 on a Debian 12 Bookworm 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 Before you begin, […]

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NetBSD 9.4 — kdewebdev — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — kdewebdev — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Upstream summary: pkgsrc audit-packages flagged kdewebdev<3.3.2nb1 for vulnerability class 'remote-code-execution'. Reference: http://www.kde.org/info/security/advisory-20050420-1.txt Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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Debian 12 — litecoin — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — litecoin — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 December 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-17144 Upstream summary: Bitcoin Core 0.14.x before 0.14.3, 0.15.x before 0.15.2, and 0.16.x before 0.16.3 and Bitcoin Knots 0.14.x through 0.16.x before 0.16.3 allow a remote denial of […]

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Debian 12 — arc — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — arc — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 12 December 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-2945 CVE-2005-2992 CVE-2015-9275 Upstream summary: arc 5.21j and earlier create temporary files with world-readable permissions, which allows local users to read sensitive information from files created by (1) […]

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Common Problems 120101

Debian 12 – Conflicting Time Services Cause Unstable Sync – Single Authority Model

🟡 Medium   ⏱ 5–30 min  Last verified: 12 December 2023 Affected versions: Debian 12 📖 ~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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NetBSD 9.4 — ja-ptex-bin — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — ja-ptex-bin — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Upstream summary: pkgsrc audit-packages flagged ja-ptex-bin-[0-9]* for vulnerability class 'remote-manipulation-of-data'. Reference: http://secunia.com/advisories/30168/ Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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How to Set Up PostgreSQL Streaming Replication on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Set Up PostgreSQL Streaming Replication on Debian 12

Introduction Deploying set up postgresql streaming replication on debian 12 on a Debian 12 Bookworm 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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Amazon Linux 2023 — autotrace — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — autotrace — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2023-004 Related CVEs: CVE-2017-9182 CVE-2019-19004 CVE-2019-19005 CVE-2022-32323 Upstream summary: A biWidth*biBitCnt integer overflow in input-bmp.c in autotrace 0.31.1 allows attackers to provide an unexpected input value to malloc via a […]

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How to Set Up Magento on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up Magento on CentOS Stream 9

Introduction Setting up set up magento on centos stream 9 on a CentOS Stream 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up Magento on CentOS Stream 9, with all the commands you need, the SELinux and firewalld considerations to keep in […]

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How to Set Up VLAN Tagging on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Set Up VLAN Tagging on FreeBSD 14

Introduction Deploying set up vlan tagging on freebsd 14 on a FreeBSD 14 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 […]

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