Networking

How to Set Up a LEMP Stack on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Set Up a LEMP Stack on FreeBSD 14

Introduction How to Set Up a LEMP Stack on FreeBSD 14 is a core administration task for any FreeBSD 14 server operator. FreeBSD 14 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 […]

Read more
How to Configure BGP Routing with BIRD on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure BGP Routing with BIRD on RHEL 9

BGP (Border Gateway Protocol) is the routing protocol that underpins the internet, exchanging routing information between autonomous systems (ASes). On RHEL 9, BIRD (BIRD Internet Routing Daemon) provides a robust, actively maintained BGP implementation suited for both lab environments and production edge routers. This tutorial walks through installing BIRD 2 on RHEL 9, writing a […]

Read more
How to Install Apache Kafka on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Install Apache Kafka on FreeBSD 14

Introduction This guide explains how to Install Apache Kafka on FreeBSD 14 on FreeBSD 14. 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 […]

Read more
How to Install Elasticsearch on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Install Elasticsearch on FreeBSD 14

Introduction Deploying install elasticsearch 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
Common Problems 116612

Ubuntu 24.04 LTS – certbot renew fails due to challenge and webroot mismatch

🟠 High   ⏱ 5–30 min  Last verified: 26 August 2024 Affected versions: Ubuntu 24.04 LTS Ubuntu 24.04 Ubuntu 24.04.1 📖 ~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 […]

Read more
How to Configure pfsync Firewall State Synchronization on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Configure pfsync Firewall State Synchronization on FreeBSD 14

Introduction How to Configure pfsync Firewall State Synchronization on FreeBSD 14 is a core administration task for any FreeBSD 14 server operator. FreeBSD 14 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 […]

Read more
How to Install FreeBSD 14 on a Server — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Install FreeBSD 14 on a Server

Introduction FreeBSD 14 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up install freebsd 14 on a server 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 Linux distribution. […]

Read more
Common Problems 117415

Temporary Failure Resolving archive.ubuntu.com

🟠 High   ⏱ 5–30 min  Last verified: 24 August 2024 Affected versions: 20.04 📖 ~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 […]

Read more
How to Set Up GitLab Runner on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Set Up GitLab Runner on FreeBSD 14

Introduction Deploying set up gitlab runner 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 […]

Read more
Common Problems 116453

Ubuntu 24.04 LTS – netplan apply causes immediate network connectivity loss

🟠 High   ⏱ 5–30 min  Last verified: 21 August 2024 Affected versions: Ubuntu 24.04 LTS Ubuntu 24.04 Ubuntu 24.04.1 📖 ~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 […]

Read more
CHAT