Carlos Goncalves 37c86aa794 Make health checks resilient to DB outages ... Octavia is struggling with proper handling of DB connectivity issues bringing down all running loadbalancers. Octavia tries to failover amphorae and can fail in one of the following stages: 1. Octavia can't create new amphora because Nova isn't ready yet after DB outage. Nova-API throws 500, Octavia nukes amphora instance and won't try to recreate it again. 2. Octavia tries to recreate amphora instance but it gets stuck in PENDING_CREATE forever. 3. Octavia fails completely reporting DB connection issues, leaving some amphoras in error, some in pending_delete as bellow: It affects also HA deployments. This patch fixes that by wrapping the DB check for health, waiting for the connection to be re-established and sleeping off the full "heartbeat_timeout" interval. Story: 2003575 Task: 24871 Change-Id: I7b30cd31e1ce0cf9dab61484f4404f1c6ccddd5e (cherry picked from commit 92473ce210)		2018-09-13 20:00:42 +00:00
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migration	Extend api to accept qos_policy_id	2017-12-20 09:23:16 +08:00
__init__.py	Initial directory skeleton	2014-09-04 15:28:10 -06:00
api.py	Make health checks resilient to DB outages	2018-09-13 20:00:42 +00:00
base_models.py	Fix fields translation on filtering	2018-07-03 11:47:52 +00:00
models.py	Merge "Improve user error messages for duplicate objects"	2018-01-05 03:15:48 +00:00
prepare.py	Add support for single-create for APIv2	2017-05-05 20:56:22 -07:00
repositories.py	Merge "Improve the error logging for zombie amphora" into stable/queens	2018-07-18 13:39:03 +00:00