limes

Limes

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.

Documentation

For users

• Index
• CLI
• API specification
• API usage example
• Audit trail

For operators

• Overview and installation instructions
• Configuration options
• List of metrics

For developers

• Developer's guide

Support, Feedback, Contributing

This project is open to feature requests/suggestions, bug reports etc. via GitHub issues. Contribution and feedback are encouraged and always welcome. For more information about how to contribute, the project structure, as well as additional contribution information, see our Contribution Guidelines.

Security / Disclosure

If you find any bug that may be a security problem, please follow our instructions in our security policy on how to report it. Please do not create GitHub issues for security-related doubts or problems.

Code of Conduct

We as members, contributors, and leaders pledge to make participation in our community a harassment-free experience for everyone. By participating in this project, you agree to abide by its Code of Conduct at all times.

Licensing

Copyright 2019-2025 SAP SE or an SAP affiliate company and limes contributors. Please see our LICENSE for copyright and license information. Detailed information including third-party components and their licensing/copyright information is available via the REUSE tool.