16 lines
759 B
Markdown
16 lines
759 B
Markdown
# Kerberos for Long Running Programs/Simulations/Shell Sessions
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Kerberos tickets get invalid at some point and after they can not be used for authentication any more. This results in e.g. AFS or ssh refusing access.
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To check when this will be run `klist` and in the output check below `krbtgt/D.PSI.CH@D.PSI.CH` the `renew until` timestamp:
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```
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Valid starting Expires Service principal
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17.03.2023 09:25:20 17.03.2023 19:25:03 krbtgt/D.PSI.CH@D.PSI.CH
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renew until 24.03.2023 09:25:08
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```
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To seamlessly continue you need to obtain a new Kerberos ticket before by running `kinit`.
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It will then ask your password and after sucessful authentication there will be a newly acquired Kerberos ticket which will do it again one week.
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