epilogue not working

[lifetooeasy]

Bug description

It seems that epilogue is not working after stopping the notebook. I set up the epilogue parameter in the configuration file like this:

c.SlurmSpawner.req_epilogue = """!/bin/bash echo 'hostname'""" (just an example). I am able to see the command in jupyterhub log after cmd but nothing happens.

Expected behaviour

run epilogue after stopping the notebook.

Actual behaviour

Your personal set up

• OS: CentOS 8

• Version(s):

• jupyterhub 1.5.0
• batchspawner 1.1.0

# jupyterhub_config.py
c.SlurmSpawner.req_epilogue = """!/bin/bash echo 'hostname'"""

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[mbmilligan]

Hello! Would you try setting this variable like so instead:

c.SlurmSpawner.req_epilogue = "echo 'hostname'"

The req_epilogue variable is substituted into the Slurm script as-is after the cmd returns, it's not a separate script. The #!/bin/bash prefix is unnecessary, and results in the line being ignored as a comment.

[lifetooeasy]

@mbmilligan it still not working. Just for information req_prologue works fine.
Can Slurm Admin restrict prologue/epilogue?