Fixed autofs mount expiry #104
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This commit makes it so that the nodeplugin shares its internal /cvmfs autofs root via a hostPath instead of an emptyDir. kubelet periodically scrapes metrics from all emptyDir volumes by walking trough them recursively, stat()-ing each item. This however resets the autofs mount expiry timeout, making it impossible to automatically unmount unused CVMFS repos. The workaround for this is to share /cvmfs via a hostPath which is not included by the metrics, avoiding the issue.
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Aug 11, 2023
(Backport #104) chart: move autofs root to hostPath
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This PR makes it so that the nodeplugin shares its internal /cvmfs autofs root via a hostPath instead of an emptyDir.
kubelet periodically scrapes metrics from all emptyDir volumes by walking trough them recursively, stat()-ing each item. This however resets the autofs mount expiry timeout, making it impossible to automatically unmount unused CVMFS repos. This escaped testing because the mount expiration timeout was shorter than the metrics scraping period.
The workaround for this is to share /cvmfs via a hostPath which is not included by the metrics, avoiding the issue.