[v14] Fixes crash when writing kubeconfig with tctl auth sign --tar
#34874
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Backports #34612 Prior this patch, using the `--format=kubernetes` option with `tctl auth sign --tar` would crash due to the filesystem abstraction used to capture the `tctl` output files did not support removing or `stat`ing files. In addition, the kubeconfig file writer did not use the filesystem abstraction given to the identity file writer, but would only write files out to the host filesystem. This means that any kubeconfig file oututs would not be included in the output tarfile stream. This patch: * Updates the tarfile filesystem abstraction to buffer files created by `tctl` until the write is complete, and then stream the archive out at the end. This gives sensible semabtics to the remove and stat operations. * Updates the kubeconfig writer to take a filesystem abstraction compatible with the one used by the identity file writer, so that the kubeconfg file output is correctly caught by the tarfile writer. Fixes: #34371 Changelog: Fixes crash when writing kubeconfig with `tctl auth sign --tar` * Fix backport test detritus
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Backports #34612
Prior this patch, using the
--format=kubernetesoption withtctl auth sign --tarwould crash due to the filesystem abstractionused to capture the
tctloutput files did not support removing orstating files.In addition, the kubeconfig file writer did not use the filesystem
abstraction given to the identity file writer, but would only write
files out to the host filesystem. This means that any kubeconfig
file oututs would not be included in the output tarfile stream.
This patch:
by
tctluntil the write is complete, and then stream the archiveout at the end. This gives sensible semabtics to the remove and
stat operations.
compatible with the one used by the identity file writer, so that
the kubeconfg file output is correctly caught by the tarfile writer.
Fixes: #34371
Changelog: Fixes crash when writing kubeconfig with
tctl auth sign --tar