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[Bug 1417649] Re: IP filtering is not accurate when used with limit

 

** Changed in: nova
       Status: Fix Committed => Fix Released

** Changed in: nova
    Milestone: None => kilo-3

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https://bugs.launchpad.net/bugs/1417649

Title:
  IP filtering is not accurate when used with limit

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  When applying an IP address filter to a servers query, the IP address
  filtering is manually applied in the compute API against the servers that are
  retrieved from the DB.

  The problem is when a limit is supplied; in this case, the IP address filter
  is only applied to the page of servers that are returned from the DB. For
  example, assume that you have 3 instances that match a given IP address filter
  and that those instances are returned from the DB in the 5th, 20th, and 100th
  positions. If you supply this IP address filter with a limit of 10, then only
  a single server is returned (the one in the 5th position). In this case, all
  3 instances should have been returned.

  A simple example (note that I manually added --limit to the CLI):

  * List all 3 serves:

   $ nova list --sort display_name:asc
   +--------------------------------------+-----------+------------------+
   | ID                                   | Name      | Networks         |
   +--------------------------------------+-----------+------------------+
   | 65515d56-6103-43dd-ac58-238baabda422 | Instance1 | private=10.0.0.2 |
   | c9ab681f-e930-4e4e-814d-d6f1cf084480 | Instance2 | private=10.0.0.3 |
   | f1d6d9ef-e31d-46b5-86a2-da34b45007b0 | Instance3 | private=10.0.0.4 |
   +--------------------------------------+-----------+------------------+

  * Limit the list to a page size of 1:
   
   $ nova list --sort display_name:asc --limit 1
   +--------------------------------------+-----------+------------------+
   | ID                                   | Name      | Networks         |
   +--------------------------------------+-----------+------------------+
   | 65515d56-6103-43dd-ac58-238baabda422 | Instance1 | private=10.0.0.2 |
   +--------------------------------------+-----------+------------------+

  * Supply only an IP address filter:

   $ nova list --sort display_name:asc --ip 10.0.0.3
   +--------------------------------------+-----------+------------------+
   | ID                                   | Name      | Networks         |
   +--------------------------------------+-----------+------------------+
   | c9ab681f-e930-4e4e-814d-d6f1cf084480 | Instance2 | private=10.0.0.3 |
   +--------------------------------------+-----------+------------------+

  * Supply both an IP address filter and a limit (should show a single
  server):

   $ nova list --sort display_name:asc --ip 10.0.0.3 --limit 1
   +----+------+----------+
   | ID | Name | Networks |
   +----+------+----------+
   +----+------+----------+

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References