Advanced Network Policies on DOKS with Cilium
Build Kubernetes NetworkPolicies and use Cilium with Hubble on DOKS to isolate services, enforce zero-trust networking, and visualize traffic with eBPF.
How to Deploy a .NET Application on RHEL 8
Microsoft’s .NET 8 runtime and SDK are available for RHEL 8 directly from Red Hat’s AppStream and Microsoft’s package feed, making it straightforward to run modern ASP.NET Core applications on enterprise Linux. This tutorial covers installing the .NET 8 SDK, scaffolding a minimal Web API project, running it for local testing, publishing a self-contained Release […]
Windows Server 2016 – Hyper-V virtual switch loses uplink after NIC driver update – Fix & Prevention (FIX-PREVENTION-2)
🟠 High ⏱ 5–30 min Last verified: 31 August 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 […]
How to Set Up a Kubernetes Dashboard on FreeBSD 12
Introduction This guide explains how to Set Up a Kubernetes Dashboard on FreeBSD 12 on FreeBSD 12. 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 […]
How to Configure the APT Package Manager on Debian 10
Introduction Deploying configure the apt package manager on debian 10 on a Debian 10 Buster 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 […]
Auditd backlog limit exceeded under heavy load
🟡 Medium ⏱ 5–30 min Last verified: 30 August 2020 📖 ~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 […]
RHEL 8 – DNF Metadata Cache Corruption Breaks Updates
🟡 Medium ⏱ 5–30 min Last verified: 30 August 2020 📖 ~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 […]
Windows Server 2019 – WFP callout driver blocks RPC and domain traffic – Fix and Prevention
🟠 High ⏱ 5–30 min Last verified: 30 August 2020 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 […]
How to Set Up a Local Kubernetes Dev Cluster with Minikube on Debian 10
Introduction How to Set Up a Local Kubernetes Dev Cluster with Minikube 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 […]
Windows Server 2016 PerfMon Shows High Split IO per Sec on Misaligned Virtual Disks – Fix & Prevention
🟡 Medium ⏱ 5–30 min Last verified: 28 August 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 […]