Wrong utilization and variance when OSD is out about ceph_exporter HOT 7 CLOSED

Interesting. Which version of Ceph are you running?

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Ceph Jewel 10.2.5

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Thanks! I will look at pushing out a fix for this soon.

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The value -nan is hard to unmarshal because it is neither a valid number nor a valid double quoted string.
Due to golang does not support unmarshal nan and inf number in json, I came up with a dumb solution to replace all -nan in the response of MonCommand to 0.

buf = bytes.Replace(buf, []byte(":-nan"), []byte(":0"), -1)

And it seems to work. Do you have any other tidy solution or should I send a pull request to you?

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Oh sure, feel free to send a PR up! At the rate of things I have scheduled, it looks like I will be able to get to this earliest by Friday.

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There's a tracker for making sure the invalid json gets addressed: http://tracker.ceph.com/issues/18239 but there has been no movement on that yet. It's weird to make the change to replace that specific string in a JSON output, but a hacky solution will at least get this working until the fix goes out.

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I just sent a pull request to make a workaround by this method. Feel free to reject or amend the commit.
Thank you very much.

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