As resources are being managed within the OpenStack cluster, there are certain types of things that are being measured by Ceilometer. These types of things are called meters in Ceilometer. Each of these types of measurements gathers samples. Samples are single measurements or data points of a certain meter. The definition of how often to sample a meter is called a pipeline. Once enough samples are collected, they can be aggregated into statistics. Ceilometer statistics show a collection of samples over time for a particular meter. Ceilometer also has the ability to set alarms that will monitor statistics and is able to respond to matching criteria.
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You're reading from OpenStack Essentials. - Second Edition
Dan Radez joined the OpenStack community in 2012 in an operator role. His experience is focused on installing, maintaining, and integrating OpenStack clusters. He has been given the opportunity to internationally present OpenStack content to a range of audiences of varying expertise. In January 2015, Dan joined the OPNFV community and has been working to integrate RDO Manager with SDN controllers and the networking features necessary for NFV. Dan's experience includes web application programming, systems release engineering, and virtualization product development. Most of these roles have had an open source community focus to them. In his spare time, Dan enjoys spending time with his wife and three boys, training for and racing triathlons, and tinkering with electronics projects.
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Dan Radez joined the OpenStack community in 2012 in an operator role. His experience is focused on installing, maintaining, and integrating OpenStack clusters. He has been given the opportunity to internationally present OpenStack content to a range of audiences of varying expertise. In January 2015, Dan joined the OPNFV community and has been working to integrate RDO Manager with SDN controllers and the networking features necessary for NFV. Dan's experience includes web application programming, systems release engineering, and virtualization product development. Most of these roles have had an open source community focus to them. In his spare time, Dan enjoys spending time with his wife and three boys, training for and racing triathlons, and tinkering with electronics projects.
Read more about Dan Radez