DNS

Common Problems 116026

Ubuntu 26.04 LTS – DKMS module build fails after kernel update – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 25 July 2026 Affected versions: Ubuntu 26.04 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
Debian 13 — libmicrodns — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — libmicrodns — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 July 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-6071 CVE-2020-6072 CVE-2020-6073 CVE-2020-6077 CVE-2020-6078 CVE-2020-6079 CVE-2020-6080 Upstream summary: An exploitable denial-of-service vulnerability exists in the resource record-parsing functionality of Videolabs libmicrodns 0.1.0. When parsing compressed labels in […]

Read more
How to Install Redis on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Install Redis on FreeBSD 15

Introduction How to Install Redis on FreeBSD 15 is a core administration task for any FreeBSD 15 server operator. FreeBSD 15 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet filtering, and […]

Read more
Common Problems 115904

Ubuntu 26.04 LTS – do-release-upgrade blocked by held packages – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 24 July 2026 Affected versions: Ubuntu 26.04 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 122185

Database Service Fails After Package Upgrade

🟡 Medium   ⏱ 5–30 min  Last verified: 24 July 2026 Affected versions: FreeBSD 15 📖 ~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
How to Configure Unattended Upgrades on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Set a Hostname on Ubuntu 26.04

The hostname identifies your server on a network and appears in shell prompts, log files, and monitoring dashboards. Ubuntu 26.04 LTS uses hostnamectl — a systemd utility — to view and change the hostname persistently without a reboot. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS server A user with sudo privileges […]

Read more
How to Install Zabbix Server on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Install Zabbix Server on FreeBSD 15

Introduction How to Install Zabbix Server on FreeBSD 15 is a core administration task for any FreeBSD 15 server operator. FreeBSD 15 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet filtering, […]

Read more
How to Set Up CouchDB on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Set Up CouchDB on FreeBSD 15

Introduction FreeBSD 15 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up set up couchdb on FreeBSD 15 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 Linux distribution. This guide walks […]

Read more
Common Problems 114134

RHEL 10 – journald Disk Usage Explodes and Fills Root FS – Log Retention Controls

🟠 High   ⏱ 5–30 min  Last verified: 24 July 2026 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~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 & Hardening Related […]

Read more
How to Configure Nginx as a Reverse Proxy for Apache2 on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Configure Nginx as a Reverse Proxy for Apache2 on FreeBSD 15

Introduction This guide explains how to Configure Nginx as a Reverse Proxy for Apache2 on FreeBSD 15 on FreeBSD 15. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework […]

Read more
CHAT