Comment 2 for bug 1688337

In general, the OpenStack provider checks the credentials at bootstrap, if they fail it says:
ERROR authentication failed.

Please ensure the credentials are correct. A common mistake is
to specify the wrong tenant. Use the OpenStack "project" name
for tenant-name in your model configuration.

Though apparently there are other places a notice like this is needed. juju autoload-credentials also works well with the OpenStack clouds.

So far, I've been unable to reproduce this error with different incorrect credentials at bootstrap. Can you please supply more information about when this error was encountered? And what, if anything, was incorrect about the credentials.

This type of error could be an expired token problem.