DNS

Alpine Linux edge — rpcbind — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — rpcbind — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0.2.4-r0 📖 ~4 min read  •  Source: Alpine secdb entry — rpcbind 0.2.4-r0 Related CVEs: CVE-2017-8779 Upstream summary: Alpine main repository for vedge ships rpcbind 0.2.4-r0 which addresses CVE-2017-8779. Table of contents Symptom & Impact Environment […]

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How to Set Up Two-Factor Authentication with Google Authenticator on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up Two-Factor Authentication with Google Authenticator on Debian 10

Introduction How to Set Up Two-Factor Authentication with Google Authenticator on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster 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 […]

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Common Problems 121033

Debian 10: chrony not syncing and system clock drift

🟡 Medium   ⏱ 5–30 min  Last verified: 14 March 2020 Affected versions: Debian 10 📖 ~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 118579

Ubuntu 16.04 LTS Kernel Panic After Virtual Hardware Change

🟠 High   ⏱ 5–30 min  Last verified: 14 March 2020 Affected versions: 16.04 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 113598

Windows Server 2012 R2 — Delivery Optimization peer cache disabled causing WAN saturation during patch — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 14 March 2020 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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How to Set Up a Private Docker Registry on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up a Private Docker Registry on Debian 9

Introduction This guide explains how to Set Up a Private Docker Registry on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install […]

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How to Configure Jenkins Pipelines on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Jenkins Pipelines on Debian 10

Introduction How to Configure Jenkins Pipelines on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster 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 10. This […]

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Common Problems 121534

Debian 9 – update-initramfs fails with missing modules or hooks

🟠 High   ⏱ 5–30 min  Last verified: 13 March 2020 Affected versions: Debian 9 📖 ~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 118066

Ubuntu 18.04 LTS – snapd refresh stuck and snap applications fail to update – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 13 March 2020 Affected versions: Ubuntu 18.04 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 113023

Windows Server 2016 — IIS W3SVC service fails after certificate change — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 13 March 2020 Affected versions: Windows Server 2016 📖 ~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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