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Why does nova database keep rows for deleted instances? [closed]

asked 2013-11-21 00:34:45 -0500

dheeru gravatar image

updated 2013-11-24 06:02:01 -0500

darragh-oreilly gravatar image
  1. Today I was accessing the 'nova' database. I was looking at the table 'instances' using sql query. It returned 100 entries. All these are the vm instances what I have created over last one month. I have deleted all these over period of time.

  2. When I run 'nova list' command, it returns only one vm instance. This is right also.

Question: Why instance table in database is keeping all the instances even though I have deleted them ?

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Closed for the following reason the question is answered, right answer was accepted by dheeru
close date 2013-11-29 09:19:08.394194

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I guess for accountability, auditing and troubleshooting, it is important to retain this data. There is also an instance_actions table.

darragh-oreilly gravatar imagedarragh-oreilly ( 2013-11-24 06:06:46 -0500 )edit

Thank you for editing this question. It really makes sense now

dheeru gravatar imagedheeru ( 2013-11-24 07:56:25 -0500 )edit

thanks for that. is it for sure? sounds reasonable to me, it would be really cool if we could find some related document for that.

jeffreycoho gravatar imagejeffreycoho ( 2014-03-02 06:48:31 -0500 )edit

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answered 2013-11-24 04:11:13 -0500

RomilGupta gravatar image

Even I have the same ques, But this kind of behaviour won't happen with neutron database. Hope someone know the exact reason can help us to understand.

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Asked: 2013-11-21 00:34:45 -0500

Seen: 422 times

Last updated: Nov 24 '13