Testing plugin installation locally

After you have written your plugin manifest and archived your plugin into a .zip or .tar.gz file, you can verify that your plugin installs correctly with Krew by running:

$ kubectl krew install --manifest=foo.yaml --archive=foo.tar.gz
  • The --manifest flag specifies a custom manifest rather than using the default krew index
  • --archive overrides the download uri: specified in the plugin manifest and uses a local .zip or .tar.gz file instead.

If the installation fails, run the command again with -v=4 flag to see the verbose logs and examine what went wrong.

If the installation succeeds, you should now be able to run your plugin.

If you made your archive file available for download on the Internet, run the same command without the --archive option and actually test downloading the file from the specified uri and validate its sha256 sum is correct.

After you have tested your plugin installation, uninstall it with kubectl krew uninstall foo.

Testing other platforms

If you need to test other platforms definitions that don’t match your current machine, you can use the KREW_OS and KREW_ARCH environment variables to override the OS and architecture that Krew thinks it’s running on.

For example, if you’re on a Linux machine, you can test Windows installation with:

$ KREW_OS=windows KREW_ARCH=amd64 krew install --manifest=[...]
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