DNS

Common Problems 112492

Windows Server 2019 – BitLocker recovery prompts after firmware updates – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 23 October 2019 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 […]

Read more
How to Configure Redis Sentinel on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure Redis Sentinel on FreeBSD 12

Introduction How to Configure Redis Sentinel on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 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, […]

Read more
How to Configure IPsec Transport Mode for Server-to-Server Encryption on Windows Server 2019 — Windows Server 2019 tutorial on Progressive Robot

How to Configure IPsec Transport Mode for Server-to-Server Encryption on Windows Server 2019

Introduction to IPsec Transport Mode IPsec (Internet Protocol Security) Transport Mode encrypts and authenticates the payload of IP packets while leaving the IP header visible. Unlike Tunnel Mode (used for VPNs), Transport Mode secures traffic between two specific servers across an existing network without changing the routing path. On Windows Server 2019, IPsec Transport Mode […]

Read more
How to Set Up Automatic Security Updates on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Automatic Security Updates on Debian 9

Introduction Deploying set up automatic security updates on debian 9 on a Debian 9 Stretch machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You […]

Read more
How to Configure a Network Adapter on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure a Network Adapter on Windows Server 2016

How to Set Up Windows Server 2016 Network Adapter Configuring the network adapter correctly on Windows Server 2016 is one of the first and most critical tasks after installation. A server that uses DHCP for its IP address can cause connectivity disruptions whenever the lease changes. This guide covers assigning a static IP address, configuring […]

Read more
Common Problems 118577

Ubuntu 16.04 LTS Docker daemon fails with cgroup driver mismatch

🟡 Medium   ⏱ 5–30 min  Last verified: 21 October 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 & Cross-Refs References & Further […]

Read more
Common Problems 118017

Ubuntu 18.04 OOM Killer Terminates Database Service

🟡 Medium   ⏱ 5–30 min  Last verified: 21 October 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 & Cross-Refs References & Further […]

Read more
Common Problems 115423

RHEL 7 – Unregistered Subscription Leaves Yum with No Repositories

🟡 Medium   ⏱ 5–30 min  Last verified: 21 October 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 & Cross-Refs References & Further […]

Read more
How to Use Remote Server Administration Tools (RSAT) on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Use Remote Server Administration Tools (RSAT) on Windows Server 2012 R2

How to Use Remote Server Administration Tools (RSAT) on Windows Server 2012 R2 Remote Server Administration Tools (RSAT) for Windows Server 2012 R2 is a collection of MMC snap-ins, command-line tools, PowerShell modules, and management consoles that enable administrators to manage Windows Server 2012 R2 roles and features remotely from a Windows 8.1 workstation or […]

Read more
How to Set Up WireGuard VPN on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Set Up WireGuard VPN on FreeBSD 12 (ON-FREEBSD-12)

Introduction How to Set Up WireGuard VPN on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 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 […]

Read more
CHAT