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MetalLB is a load-balancer implementation for bare metal Kubernetes clusters, using standard routing protocols.

Project maturity: beta license CI Containers Go report card CII Best Practices

Check out MetalLB's website for more information.


Although the main branch has been relatively stable in the past, please be aware that it is the development branch.

Consuming manifests from main may result in unstable / non backward compatible deployments. We strongly suggest consuming a stable branch, as described in the official docs.


We welcome contributions in all forms. Please check out the hacking and contributing guide for more information.

Participation in this project is subject to a code of conduct.

One lightweight way you can contribute is to tell us that you're using MetalLB, which will give us warm fuzzy feelings :).

Reporting security issues

You can report security issues in the github issue tracker. If you prefer private disclosure, please email to all of the maintainers:

We aim for initial response to vulnerability reports within 48 hours. The timeline for fixes depends on the complexity of the issue.