Open Stack

On 06/20/2017 01:45 PM, Alex Evonosky wrote:
> Openstackers-
>
> I am getting the familiar: *No hosts found* when launching an instance.  After
> research I found many issues such as this at least going back to 2015.  However,
> the solutions that were presented did not really seem to help mine, so I am
> checking if my error maybe a more common one that could be fixed.

<snip>

> some from nova-scheduler:
>
> 2017-06-20 15:18:14.879 11720 INFO nova.filters
> [req-128bca26-06da-49de-9d14-ad1ae967d084 7e7176b79f94483c8b802a7004466e66
> 5f8b2c83921b4b3eb74e448667b267b1 -
> - -] Filter RetryFilter returned 0 hosts
> 2017-06-20 15:18:14.888 11720 INFO nova.filters
> [req-128bca26-06da-49de-9d14-ad1ae967d084 7e7176b79f94483c8b802a7004466e66
> 5f8b2c83921b4b3eb74e448667b267b1 -
> - -] Filtering removed all hosts for the request with instance ID
> '1a461902-4b93-40e5-9a95-76bb9ccbae63'. Filter results: ['RetryFilter: (start:
> 0, end: 0)']
> 2017-06-20 15:19:10.930 11720 INFO nova.scheduler.host_manager
> [req-003eec5d-441a-45af-9784-0d857a9d111a - - - - -] Successfully synced
> instances from host 'o
> penstack-compute2'.
> 2017-06-20 15:20:15.113 11720 INFO nova.scheduler.host_manager
> [req-b1c4044c-6973-4f28-94bc-5b40c957ff48 - - - - -] Successfully synced
> instances from host 'o
> penstack-compute3'.

If you haven't already, enable debug logs on nova-scheduler.  You should be able 
to see which filter is failing and hopefully why.

In your example, look for nova-scheduler logs with 
"req-c4d5e734-ba41-4fe8-9397-4b4165f4a133" in them since that is the failed 
request.  The timestamp should be around 15:30:56.

Chris