CODEWITHSUNDEEP
kuberneteskubectl
denski
denski

Reputation: 2040

Passing host/local env vars into Kubectl 'exec' commands

I'd like to pass env vars into the exec command.

So far I have tried the following

SOME_VAR="A String"

kubectl exec -it a-pod-name -- sh -c 'env NEW_VAR=$SOME_VAR; echo $NEW_VAR > some-file-name.txt'

I realise I could use kubectl cp if I wanted to copy files, but that doesn't fit my use case.

Upvotes: 1

Views: 1814

Answers (1)

Prafull Ladha
Prafull Ladha

Reputation: 13449

You need to put the command in double quotes and it will work like following:

kubectl exec -it a-pod-name -- sh -c "env new_var=$var; echo $new_var > some-file-name.txt"

The reason behind that is bash doesn't extract variable into values in single quotes and hence you need to use double quotes.

Upvotes: 5

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