Public bug reported:
Getting the list of AVZs can take several seconds (~30 secs. in our case)
This is noticeable in Horizon when creating a new instance because the user
can't select an AVZ until this completes.
workflow:
- get all services from all cells (~10000 for us)
- fetch all aggregates which are tagged as an AVZ
- construct a dict of {'service['host']: avz.value}
- return a dict of {'avz_value': list of hosts}
- separate available and not available zones.
Reproducible in Queens, Rocky
** Affects: nova
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1801897
Title:
List AVZs can take several seconds
Status in OpenStack Compute (nova):
New
Bug description:
Getting the list of AVZs can take several seconds (~30 secs. in our case)
This is noticeable in Horizon when creating a new instance because the user
can't select an AVZ until this completes.
workflow:
- get all services from all cells (~10000 for us)
- fetch all aggregates which are tagged as an AVZ
- construct a dict of {'service['host']: avz.value}
- return a dict of {'avz_value': list of hosts}
- separate available and not available zones.
Reproducible in Queens, Rocky
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