Convert k8s api version

💻 Tech

To convert your k8s resource YAMLs files to another API version, install the convert plugin first by following this.

For example, you have ingress-old.yaml:

---
# Deprecated API version
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: ingress-space
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  rules:
  - http:
      paths:
      - path: /video-service
        pathType: Prefix
        backend:
          serviceName: ingress-svc
          servicePort: 80

When you run k convert -f ingress-old.yaml --output-version=networking.k8s.io/v1 | k create -f -, it converts this file to use the specified API group version networking.k8s.io/v1 and creates the resource with the converted YAML file read by the create command from the standard input.

If you run the same convert command and redirect the output to a file (i.e., >), you will see this YAML file with updated apiVersion:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
  creationTimestamp: null
  name: ingress-space
spec:
  rules:
  - http:
      paths:
      - backend:
          service:
            name: ingress-svc
            port:
              number: 80
        path: /video-service
        pathType: Prefix
status:
  loadBalancer: {}