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Docker space usage monitoring and alerting

Is there a way to track how much space Docker is using, similar to the 'docker system df' command, and alert when a threshold is breached?

I know the Docker: Devicemapper Data Space metrics exist, but so far I can tell, these will only work if the devicemapper storage driver is used. The preferred Docker storage driver is overlay2, in most cases; are there any plans to expand the Docker metrics to look at overlay2 rather than devicemapper?

The alternative to monitor disk usage would be to create a OneAgent plugin, I guess?


Yes, OneAgent plugin should be good solution here.