Practical engineering write-ups on infrastructure, containers, and distributed systems. Every post comes from a real setup — no theory without execution.https://blog.ibtisam-iq.com/ Muhammad Ibtisamen Fri, 10 Apr 2026 09:54:01 -0000 Fri, 10 Apr 2026 09:54:01 -0000 1440 MkDocs RSS plugin - v1.17.9 None https://blog.ibtisam-iq.com/ Muhammad Ibtisam CI/CD Debugging Documentation GitHub Actions MkDocs MkDocs Material Platform Engineering PyMdown Extensions Pygments Python <h1>MkDocs CI Build Fails, Locally It Works: The Pygments 2.19 NoneType Trap</h1> <p>Everything was green for months. One new folder added, one push made — and CI started crashing with <code>AttributeError: 'NoneType' object has no attribute 'replace'</code>. Local builds: perfectly fine. GitHub Actions: dead.</p> <p>This is the full root cause analysis and fix.</p> https://blog.ibtisam-iq.com/mkdocs-ci-build-fails-pygments-nonetype-crash/ Sun, 29 Mar 2026 00:00:00 +0000 Engineering Bloghttps://blog.ibtisam-iq.com/mkdocs-ci-build-fails-pygments-nonetype-crash/ Muhammad Ibtisam Cloudflare Tunnel Docker Jenkins Nexus Platform Engineering Platform Engineering Self-Hosted SonarQube <h1>My Self-Hosted CI/CD Lab: Jenkins, SonarQube, and Nexus on Custom Domains with SSL</h1> <p>A four-node CI/CD lab — each service on its own server, its own subdomain, its own SSL cert — reproduced from a single command. No public IP. No manual setup.</p> https://blog.ibtisam-iq.com/self-hosted-cicd-lab-jenkins-sonarqube-nexus/ Fri, 06 Mar 2026 00:00:00 +0000 Engineering Bloghttps://blog.ibtisam-iq.com/self-hosted-cicd-lab-jenkins-sonarqube-nexus/ Muhammad Ibtisam Containers & Orchestration Kubernetes Networking <h1>How I Debugged a Kubernetes DNS Failure</h1> <p>One-line summary of what this post solves.</p> https://blog.ibtisam-iq.com/k8s-dns-failure-debug/ Sat, 21 Feb 2026 00:00:00 +0000 Engineering Bloghttps://blog.ibtisam-iq.com/k8s-dns-failure-debug/