Fix OIDC token refresh failing on Windows in the asyncio client - #2668
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kubernetes-prow[bot] merged 1 commit intoAug 5, 2026
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_refresh_oidc passed the name of an open NamedTemporaryFile to OpenIDRequestor. On Windows the file cannot be reopened by path while the original handle is alive, so any consumer reading the CA cert fails. Add the module-level _create_temp_file_with_content helper, mirroring kubernetes/base/config/kube_config.py, and use it for the CA cert. The FileOrData method now delegates to it, which also closes the descriptor that mkstemp returned. Follow-up to kubernetes-client#2644.
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/kind bug |
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/assign @yliaog |
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thanks for the PR /lgtm |
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: ealeonraz, yliaog The full list of commands accepted by this bot can be found here. The pull request process is described here DetailsNeeds approval from an approver in each of these files:
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The asyncio client has the same Windows failure as #2644, in a different
form.
_refresh_oidcwrites through the openNamedTemporaryFilehandle,so it avoids the traceback in that PR, but it then passes
certfile.nameto
OpenIDRequestorwhile the handle is still open. On Windows a secondopen of that path fails, so any consumer reading the CA cert by path hits
a PermissionError.
This applies the same fix. The aio module had no module-level
_create_temp_file_with_content, only aFileOrDatamethod, so this addsthe module-level helper mirroring
kubernetes/base/config/kube_config.pyand points the existing method at it, which also closes a descriptor that
mkstempleaked.Note the CA cert temp file now lives until process exit and is cleaned by
the existing
_cleanup_temp_filesatexit hook, matching the sync client,rather than being removed when the
withblock ended.Verified on Windows 11 / Python 3.14:
kubernetes/aio/config/kube_config_test.py: 61 passed.Follow-up to #2644, requested by @yliaog.