Can kubectl delete environment variable?

Question

Here I can update the envs through kubectl patch, then is there any method that can delete envs except re-deploy a deployment.yaml?

$ kubectl patch deployment demo-deployment -p '{"spec":{"template":{"spec":{"containers":[{"name": "demo-deployment","env":[{"name":"foo","value":"bar"}]}]}}}}'
deployment.extensions "demo-deployment" patched

Can I delete the env "foo" through command line not using a re-deploy on the whole deployment?

Answer 1

This is coming late but for newcomers, you can use the following kubectl command to remove an existing env variable from a deployment

kubectl set env deployment/DEPLOYMENT_NAME  VARIABLE_NAME-

Do not omit the hyphen (-) at the end