DNS

Common Problems 112514

Windows Server 2019 — AD trust password broken between domains causing cross-domain auth failures — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 6 August 2019 Affected versions: Windows Server 2019 📖 ~2 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 Install and Configure Nomad on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install and Configure Nomad on Debian 9

Introduction This guide explains how to Install and Configure Nomad 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 with the […]

Read more
How to Set Up IPAM on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Set Up IPAM on Windows Server 2016

How to Set Up Windows Server 2016 IPAM IP Address Management (IPAM) is a built-in feature in Windows Server 2016 that provides a centralized framework for discovering, monitoring, auditing, and managing the IP address space in your network. IPAM integrates with DHCP servers to manage scopes and leases, integrates with DNS servers to manage zones […]

Read more
SLES 15 — libunbound2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — libunbound2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 5 August 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2014-8602 CVE-2017-15105 Upstream summary: iterator.c in NLnet Labs Unbound before 1.5.1 does not limit delegation chaining, which allows remote attackers to cause a denial of […]

Read more
Common Problems 118476

Ubuntu 16.04 LTS – system drops to initramfs busybox shell

🔴 Critical   ⏱ 5–30 min  Last verified: 4 August 2019 Affected versions: Ubuntu 16.04 LTS Ubuntu 16.04 Ubuntu 16.04.7 📖 ~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 Install Docker Engine on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install Docker Engine on RHEL 7

How to Install Docker Engine on RHEL 7 Docker Engine is the industry-standard container runtime that allows you to build, ship, and run applications inside isolated containers. On Red Hat Enterprise Linux 7, installing Docker CE (Community Edition) requires a few extra steps compared to other distributions because RHEL 7 ships with its own container […]

Read more
Common Problems 115494

sshd Fails to Start After Configuration Change

🟡 Medium   ⏱ 5–30 min  Last verified: 4 August 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 115006

RHEL 8 XFS Filesystem Remounts Read-Only After I/O Error Burst

🟡 Medium   ⏱ 5–30 min  Last verified: 4 August 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 115484

Network Restart Drops Static Routes on RHEL 7

🟡 Medium   ⏱ 5–30 min  Last verified: 3 August 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 113395

Windows Server 2016 – Hyper-V live migration fails with authentication errors – Fix & Prevention (FIX-PREVENTION-2)

🟠 High   ⏱ 5–30 min  Last verified: 3 August 2019 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 […]

Read more
CHAT