Networking

How to Set Up BGP Routing on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up BGP Routing on Windows Server 2019

Introduction to BGP Routing on Windows Server 2019 Border Gateway Protocol (BGP) is the routing protocol that powers the internet, used to exchange routing information between autonomous systems (AS). In Windows Server 2019, BGP routing is available as part of the Remote Access role and is commonly used in software-defined networking scenarios, branch office connectivity, […]

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How to Configure Docker Networking on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure Docker Networking on FreeBSD 12

Introduction Deploying configure docker networking on freebsd 12 on a FreeBSD 12 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 Set Up a FreeBSD Jail for Web Hosting on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Set Up a FreeBSD Jail for Web Hosting on FreeBSD 13 (ON-FREEBSD-13)

Introduction How to Set Up a FreeBSD Jail for Web Hosting on FreeBSD 13 is a core administration task for any FreeBSD 13 server operator. FreeBSD 13 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 […]

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How to Install and Configure Kotlin on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install and Configure Kotlin on Debian 9

Introduction How to Install and Configure Kotlin on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 9. […]

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How to Use Skaffold for Kubernetes Dev on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Use Skaffold for Kubernetes Dev on FreeBSD 13

Introduction This guide explains how to Use Skaffold for Kubernetes Dev on FreeBSD 13 on FreeBSD 13. 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 […]

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Common Problems 119020

Ubuntu 14.04 LTS Swap Thrashing Under Moderate Load

🟠 High   ⏱ 5–30 min  Last verified: 5 June 2021 Affected versions: 14.04 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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Common Problems 115401

Yum Metadata Checksum Mismatch from Repository Mirror Drift

🟡 Medium   ⏱ 5–30 min  Last verified: 5 June 2021 📖 ~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 […]

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How to Install Oracle JDK 8 on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Oracle JDK 8 on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up install oracle jdk 8 on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully and […]

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Common Problems 112600

Windows Server 2019 NVMe Driver Mismatch Throttles Throughput After Patching – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 4 June 2021 Affected versions: Windows Server 2019 📖 ~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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