ironic/releasenotes/notes/fix-rpc-exceptions-12c70eb6...

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---
fixes:
- Ironic exceptions that contained arbitrary objects in ``kwargs`` and were
sent via RPC were causing ``oslo_messaging`` serializer to fail. This was
leading to 500 errors from ironic API, timing out waiting for response from
the conductor. Starting with this release, all non-serializable objects
contained in an exception's kwargs are dropped. Whether the error is going
to be returned by the service will depend on the configuration option
``[DEFAULT]/fatal_exception_format_errors``.