k8s-nextjs-deploy

Kubernetes deployment patterns for containerized Next.js apps: Harbor registry auth, Traefik ingress with automatic TLS, Linkerd sidecar injection, and multi-app namespace management.

When to use

• Deploying a new Next.js app (Deployment + Service + Ingress rule)
• Diagnosing ImagePullBackOff, ErrImagePull, CreateContainerConfigError
• Rotating Harbor pull secret credentials
• Adding a subdomain to an existing Traefik ingress with cert-manager
• Applying K8s manifests after a namespace was deleted
• Troubleshooting pods stuck because of missing secretKeyRef secrets

Do NOT use for:

• Non-Kubernetes deployments (Docker Compose, bare-metal, Vercel)
• Database deployments (stateful sets require separate skill)

Deployment manifest