DNS

Common Problems 116941

Ubuntu 22.04 LTS – DNS resolution fails with systemd-resolved stub issues – Fix & Prevention (FIX-PREVENTION-2)

🟠 High   ⏱ 5–30 min  Last verified: 28 November 2023 Affected versions: Ubuntu 22.04 LTS 📖 ~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 114540

Journal Logs Consuming Excessive Disk on RHEL 9

🟡 Medium   ⏱ 5–30 min  Last verified: 28 November 2023 📖 ~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 Configure Kubernetes Ingress Controller on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure Kubernetes Ingress Controller on Debian 12

Introduction Deploying configure kubernetes ingress controller 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 will […]

Read more
Debian 12 — pdns-recursor — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — pdns-recursor — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 28 November 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-2069 CVE-2006-4251 CVE-2006-4252 CVE-2008-1637 CVE-2008-3217 CVE-2009-4009 CVE-2009-4010 CVE-2014-3614  +12 more Upstream summary: The recursor in PowerDNS before 3.0.1 allows remote attackers to cause a denial of service (application […]

Read more
How to Install Perl and CPAN Modules on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install Perl and CPAN Modules on Debian 12

Introduction This guide explains how to Install Perl and CPAN Modules on Debian 12 on Debian 12 Bookworm. Debian Bookworm uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 12 install with […]

Read more
How to Install and Configure Varnish Cache on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Install and Configure Varnish Cache on FreeBSD 14

Introduction FreeBSD 14 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up install and configure varnish cache on freebsd 14 on FreeBSD 14 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any […]

Read more
How to Install Puppet Agent on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install Puppet Agent on Debian 12

Introduction Debian 12 Bookworm is built around the ethos of stability and free software. Setting up install puppet agent on debian 12 on Bookworm leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bookworm freeze. Follow each step carefully and the […]

Read more
How to Install MariaDB on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install MariaDB on Debian 12

Introduction Debian 12 Bookworm is built around the ethos of stability and free software. Setting up install mariadb on debian 12 on Bookworm leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bookworm freeze. Follow each step carefully and the resulting […]

Read more
Common Problems 114541

Grub Entry Boots Wrong Kernel by Default

🟡 Medium   ⏱ 5–30 min  Last verified: 26 November 2023 📖 ~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 Install MariaDB on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Install MariaDB on FreeBSD 14

Introduction Deploying install mariadb 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 base + […]

Read more
CHAT