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Limes

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Limes is an OpenStack-compatible quota/usage tracking service, originally designed for SAP's internal cloud.

Pronounce the name like the Ancient Roman border wall, not like the fruit. (Mnemonic: The original Limes was installed when the Romans wanted to put a quota on Germanic land use.)

The idea: Automatic quota distribution

Limes can discover capacity and usage for various types of OpenStack resources. It can then be set up to distribute quota automatically among all projects in a dynamic and automated fashion. Both cloud admins and project admins have several knobs to control their quota assignments in a controlled fashion.

Unique features

  • Limes records quota changes in the Open Standards CADF Format, and is compatible with other cloud based audit APIs (e.g. Hermes).
  • Quota and usage data can be exposed as Prometheus metrics for monitoring and alerting.

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