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How to Configure Static IP on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Configure Static IP on FreeBSD 14

Introduction How to Configure Static IP 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 packet filtering, […]

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How to Install Java and Configure JAVA_HOME on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install Java and Configure JAVA_HOME on RHEL 9

Java 21 is a Long-Term Support release that brings virtual threads, record classes, and pattern matching to the platform, making it the recommended JDK for new enterprise workloads on RHEL 9. Red Hat ships OpenJDK 21 through the standard dnf repositories, so installation is straightforward and kept in sync with security advisories. This tutorial covers […]

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Common Problems 116638

Ubuntu 24.04 LTS Third-Party PPA Conflicts Break apt update

🟠 High   ⏱ 5–30 min  Last verified: 4 August 2024 Affected versions: Ubuntu 24.04 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 Configure sysutils/check_mk_agent on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Configure sysutils/check_mk_agent on FreeBSD 14

Introduction How to Configure sysutils/check_mk_agent 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 packet filtering, and […]

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How to Install Vagrant and VirtualBox on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Install and Configure SonarQube on Ubuntu 24.04

SonarQube is an open-source platform for continuous code quality inspection, detecting bugs, vulnerabilities, and code smells. This guide installs SonarQube on Ubuntu 24.04 LTS with PostgreSQL 16. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server Minimum 2 GB RAM (4 GB recommended) Java 21 installed PostgreSQL 16 installed A user with […]

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How to Install Vagrant and VirtualBox on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Jenkins on Ubuntu 24.04

Jenkins is the leading open-source automation server for CI/CD pipelines. This guide installs the latest LTS Jenkins on Ubuntu 24.04 LTS with Java 21 and configures it behind Nginx. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server Minimum 1 GB RAM (2 GB recommended) A user with sudo privileges Step 1 […]

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How to Build Grafana Dashboards for FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Build Grafana Dashboards for FreeBSD 14

Introduction Deploying build grafana dashboards for 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 […]

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How to Monitor MySQL with Prometheus on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Monitor MySQL with Prometheus on FreeBSD 14

Introduction This guide explains how to Monitor MySQL with Prometheus 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 […]

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How to Install SQLite on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Install SQLite on FreeBSD 14

Introduction How to Install SQLite 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 packet filtering, and […]

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Common Problems 116420

Ubuntu 24.04 LTS – apt update fails with NO_PUBKEY or expired key – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 2 August 2024 Affected versions: Ubuntu 24.04 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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