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I need to pass dynamic env variable to kubectl create. Something like this
kubectl create -f app.yaml --Target=prod
Based on Target code deploys on different servers.
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There are two ways to define environment variables with Kubernetes: by setting them directly in a configuration file, from an external configuration file, using variables, or a secrets file. This tutorial shows both options, and uses the Humanitec getting started application used in previous tutorials.
When you create a Pod, you can set dependent environment variables for the containers that run in the Pod. To set dependent environment variables, you can use $(VAR_NAME) in the value of env in the configuration file.
If you want to avoid installing 3rd party plugin then you can replace the text using sed "s/orginal/change/". It worked. I used this in Jenkins shell.
cat app.yaml | sed "s/l3-apps/l2-apps/" | kubectl create -f -
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