You Disabled Traefik on K3s, But ingress-nginx Still Can't Grab Port 443. Meet ServiceLB, the Roommate You Forgot About
You ran the K3s disable-traefik flag but ingress-nginx still can't bind port 443. The culprit is ServiceLB (klipper-lb), another default K3s component. Here's how to diagnose it, disable it correctly, and what changes if you're running MetalLB.