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I just deployed my first ceph cluster and have been trying multiple things so far.

Though, I couldn't understand how ceph store metric for the devices.

I can easily access those through:

# ceph device get-health-metrics --help

Even though it doesn't seem obvious. I've been looking for device_health_metrics pool, though, that seems to be renamed to .mgr in newer releases (blog post).

The thing that is making me confused is that manager module devicehealth is targetting a pool that doesn't exist: device_health_metrics and I am still able to retrieve metrics without errors.

device health module

I am also able to run the following without errors:

  • ceph device scrape-health-metrics
  • ceph device scrape-daemon-health-metrics osd.1

Mind sharing your thoughts on this?

Thanks

Robson Jr
  • 51

1 Answers1

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It is in documentation for manager modules.

Prior to Quincy, the devicehealth module created a device_health_metrics pool to store device SMART statistics. With Quincy, this pool is automatically renamed to be the common manager module pool.

Robson Jr
  • 51