vitrage-specs/specs/ocata/aodh-message-bus-notifications.rst

Get Aodh Alarms From Message Bus Notifications

Get Aodh alarms immediately via notification from the message bus.

Problem description

Currently Aodh datasource queries Aodh alarms periodically. It is not in time and it is also not efficient, since most query will get no change when the interval of alarm evaluation in Aodh is larger than the interval of pulling Aodh alarm in Vitrage.

Proposed change

Aodh update_method in vitrage config file will be configured with:

/etc/vitrage/vitrage.conf :

[aodh]
update_method = push

Add a new notification topic in Aodh config file:

/etc/aodh/aodh.conf :

[oslo_messaging_notifications]
topics = vitrage_notifications

Vitrage listener will get the alarm events from the message bus. Aodh driver will filter the needed event types, enrich the events and then send them to the queue for the Aodh transformer to create, update or delete the entity vertex.

Alternatives

None

Data model impact

None

REST API impact

None

Security impact

None

Pipeline impact

None

Other end user impact

None

Performance/Scalability Impacts

performance improvement of getting Aodh alarms

Other deployer impact

• Config update_method as 'push' in Aodh section in vitrage config file.
• Add the vitrage_notifications topic in oslo_messaging_notifications section in Aodh config file.

Developer impact

None

Implementation

Assignee(s)

Primary assignee:

dongwenjuan <dong.wenjuan@zte.com.cn>

Work Items

None

Future lifecycle

None

Dependencies

None

Testing

Unit tests and tempest tests.

Documentation Impact

Documentation will be modified to describe how to configure the notification topics in Aodh when using devstack to deploy OpenStack env.

References

None