DNS

Common Problems 115964

Ubuntu 26.04 LTS – kernel updates fail because /boot is full – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 2 May 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 […]

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How to Install and Configure Squid Proxy on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Install and Configure Squid Proxy on FreeBSD 15

Introduction Deploying install and configure squid proxy on a FreeBSD 15 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 + […]

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NetBSD 10.0 — powerdns-recursor — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — powerdns-recursor — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2012-1193 CVE-2020-10995 CVE-2020-12244 CVE-2020-14196 CVE-2022-27227 CVE-2023-22617 CVE-2025-30195 CVE-2025-30192  +12 more Upstream summary: pkgsrc audit-packages flagged powerdns-recursor<3.1.7.2 for vulnerability class 'arbitrary-code-execution'. Reference: http://doc.powerdns.com/powerdns-advisory-2010-01.html Table of contents Symptom & Impact Environment […]

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How to Deploy a Django Application with Gunicorn and Nginx on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Deploy a Django Application with Gunicorn and Nginx on RHEL 9

Django is a high-level Python web framework that follows the “batteries included” philosophy — it provides an ORM, authentication, admin interface, form validation, URL routing, templating, and security middleware out of the box. This makes Django the framework of choice for data-driven applications and content management systems where rapid development and maintainability matter. Django’s ORM […]

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How to Set Up Ingress with NGINX in Kubernetes on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Set Up Ingress with NGINX in Kubernetes on RHEL 10

Introduction This tutorial demonstrates how to Set Up Ingress with NGINX in Kubernetes on RHEL 10 on RHEL 10. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered RHEL 10 system with the […]

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How to Install PHP 8.3 on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install PHP 8.3 on RHEL 10

Introduction Setting up install php 8.3 on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Install PHP 8.3 on RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and how to validate the […]

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Common Problems 115943

Stop cloud-init from Overwriting Network Settings on Ubuntu 26.04 LTS

🟡 Medium   ⏱ 5–30 min  Last verified: 1 May 2026 Affected versions: 26.04 📖 ~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 […]

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How to Install Elasticsearch on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Install Elasticsearch on FreeBSD 15

Introduction This guide explains how to Install Elasticsearch 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 and Capsicum for fine-grained privilege separation. […]

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How to Configure MySQL InnoDB Tuning on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Configure MySQL InnoDB Tuning on FreeBSD 15

Introduction This guide explains how to Configure MySQL InnoDB Tuning 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 and Capsicum for fine-grained […]

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How to Configure Rate Limiting in Nginx on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Configure Rate Limiting in Nginx on FreeBSD 15

Introduction Deploying configure rate limiting in nginx on a FreeBSD 15 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 + […]

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