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Extending OpenStack by Omar Khedher

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Defining host aggregate

So far, there might be a slight confusion between AZ and host aggregate terminologies. Using host aggregate, it is possible to group compute nodes based on granular specifications and hardware profile categories. The latter criteria is defined on metadata, which describes each compute node, including information regarding the following:

  • Disk and data storage type
  • Network speed
  • CPU speed and frequency
  • Hypervisor capabilities

To avoid any confusion between AZ and host aggregate, keep in mind that end users will not explicitly use any aggregate, but it can be defined by cloud operators. A newly created host aggregate will be exposed to the public as a flavor from Nova's perspective, from which users can spawn virtual ...

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