How can I edit a Deployment without modify the file manually?

Question

I have defined a Deployment for my app:

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: myapp-deployment
spec:
  replicas: 2
  template:
           


        

Answer 1

I have recently built a tool to automate deployment updates when new images are available, it works with Kubernetes and Helm:

https://github.com/rusenask/keel

You only have to label your deployments with Keel policy like keel.sh/policy=major to enable major version updates, more info in the readme. Works similarly with Helm, no additional CLI/UI required.