April 2017
Intermediate to advanced
470 pages
11h 12m
English
Content preview from Mastering OpenStack - Second Edition
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Alarms
Apart from the various agents for data collection, Ceilometer also contains alarm notification and evaluation agents. The alarm evaluation agent checks for resource utilization parameters crossing a threshold value and uses the notification agent to emit the corresponding notification. The alarm system can be used to build auto-scaling infrastructure or take other corrective actions. The Aodh sub-project has been designed to decouple the alarming from Ceilometer and can be enabled when deploying a fresh installation of OpenStack.
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