Omar Massfih — Notes https://omarmassfih.no/ 2026-07-03T00:00:00.000Z Omar Massfih The Three Laws of Software Architecture https://omarmassfih.no/notes/software-architecture/three-laws-of-software-architecture.html 2026-07-03T00:00:00.000Z Three simple rules from Fundamentals of Software Architecture. Every choice has a cost, the reason behind a decision matters most, and most architecture choices sit on a scale. Protect Ingress with oauth2-proxy (K3s + ingress-nginx) https://omarmassfih.no/notes/kubernetes-k3s/oauth2-proxy-ingress.html 2025-09-30T00:00:00.000Z Protect an ingress-nginx Ingress on K3s with oauth2-proxy and any OIDC provider, using auth_request and a Lua snippet for header handling. Ingress with cert-manager on OpenShift (IBM) https://omarmassfih.no/notes/openshift/cert_manager_ingress.html 2025-09-27T00:00:00.000Z Issue Let's Encrypt certificates for an OpenShift Ingress with cert-manager, using a ClusterIssuer and the openshift-default ingress class.