init: argument list too long

[vsukhin]

Describe the bug
Argument list is too long for Test Workflow init with multiple and big env

To Reproduce
Steps to reproduce the behavior:

1. Create test workflow
2. Specify env var with big sizes like cert or so
3. See error
   exec /.tktw/init: argument list too long
   Aborted (Error)
   Error

Expected behavior
Test Workflow is executed without error

Version / Cluster

• Which testkube version? 2.0.2
• What Kubernetes cluster?Minikube
• What Kubernetes version? 1.25

[rangoo94]

@vsukhin, are you sure that it's about the environment variable, not just the long argument? The certificate is actually passed as an argument to the Toolkit, and I would rather say that it's directly related to the script itself.

Two things to fix:

• Read the certificate and token for clone operation from env variables directly, not CLI parameters (direct issue)
• When there is a big shell script to run, extract it to a separate file (similar issue)

I think that the latter one can be delayed for now, as it's edge case too, and we can just fix the direct issue

[vsukhin]

Yes, then it's about direct issue. User can provide additional details https://testkubeworkspace.slack.com/archives/C06DD6RUWAZ/p1719555213306649

[rangoo94]

Actually, seems like environment variables also contribute to this size: https://stackoverflow.com/questions/28865473/setting-environment-variable-to-a-large-value-argument-list-too-long. Then, big data like certificates will need to be passed via files.

For the direct issue, it shouldn't be a problem anyway I guess.

[vsukhin]

interesting

[vsukhin]

should we close it by adding notes to documentation?