aodh/releasenotes/notes/ussuri-support-query-all-projects-alarms-by-admin-3ecccf2217d711ea.yaml
Lingxian Kong 1349706e2e Support aodh-evaluator built-in active/active deployment mode
Support to deploy aodh-evaluator in active/active mode by leveraging
database non-locking mechanism. With this feature, there could be
multiple aodh-evaluator processes running without dependency of etcd or
zookeeper.

The main change is in aodh/evaluator/__init__.py, in order to use
non-locking db update, a new column named 'evaluate_timestamp' is
introduced to 'alarm' table. all other code is changed
because of 'storage_conn.get_alarms()' implementation changed.

Change-Id: I666817cdcf9083f2ad5871d157900cb6dc5a86e0
2019-12-06 16:23:32 +13:00

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---
features:
- Support to deploy aodh-evaluator in active/active mode by leveraging
database non-locking mechanism. With this feature, there could be multiple
aodh-evaluator processes running without dependency of etcd or zookeeper.