a155e9cf11
Neutron uses an AZ-unaware scheduler (LeastRoutersScheduler) by default in its configuration and the neutron-api charm does not override it. AZLeastRoutersScheduler inherits from LeastRoutersScheduler and does the same, plus respects AZ hints when scheduling HA routers. For --distributed --ha routers using AZLeastRoutersScheduler means that snat namespaces will be scheduled with respect to the AZ hints specified during router creation by an operator. For --ha but not distributed routers using AZLeastRoutersScheduler means that qrouter namespaces will be scheduled with respect to the AZ hints. snat namespaces (--ha & --distributed) and qrouter namespaces (--ha only) are placed by the scheduler to l3 agents that run in the dvr_snat mode only so the scheduler change will affect both the deployments with neutron-gateway units and the ones with neutron-openvswitch running with use-dvr-snat=True. Change-Id: I98cd67ff0cf5418a9699acc7aff96c3edb9b2341 Closes-Bug: #1886195 |
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