GlossaryΒΆ

alarm
An action triggered whenever a meter reaches a certain threshold.
API server
HTTP REST API service for Aodh.
ceilometer

From Wikipedia [1]:

A ceilometer is a device that uses a laser or other light source to determine the height of a cloud base.
http callback
HTTP callback is used for calling a predefined URL, whenever an alarm has been set off. The payload of the request contains all the details of why the alarm was triggered.
log
Logging is one of the alarm actions that is useful mostly for debugging, it stores the alarms in a log file.
zaqar

According to Zaqar Developer Documentation:

Zaqar is a multi-tenant cloud messaging and notification service for web and mobile developers.
project
The OpenStack tenant or project.
resource
The OpenStack entity being metered (e.g. instance, volume, image, etc).
user
An OpenStack user.
[1]http://en.wikipedia.org/wiki/Ceilometer