What are Kubernetes Ingress Annotations?

What are Kubernetes Ingress Annotations?

Kubernetes Ingress Annotations are key-value pairs that provide additional configuration options for Ingress resources.

Can you give me some examples of common annotations?

Sure! Common annotations include nginx.ingress.kubernetes.io/rewrite-target for URL rewriting and nginx.ingress.kubernetes.io/ssl-redirect for HTTPS redirection.

How do I apply these annotations in my Ingress resource?

You can apply annotations in your Ingress YAML file under the metadata section, like this:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: example-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /new-path
spec:
  rules:
  - host: example.com
    http:
      paths:
      - path: /old-path
        pathType: Prefix
        backend:
          service:
            name: example-service
            port:
              number: 80

Are there any limitations to using annotations?

Yes, annotations can vary by Ingress controller, and not all annotations are supported by every controller. Always check the documentation.