cannot migrate manual models

[Heather Lanigan]

There is no way to migrate from a manual cloud model to another controller.

With controllers A and B, deployed with manual clouds A and B, created a model on controller A, ran juju add-machine ssh:... and deployed a unit to machine 0 in the model. Errors when moving the new model from controller A to controller B:

machine-0: 21:40:32 ERROR juju.worker.migrationmaster.cf9039 model data transfer failed, failed to import model into target controller: updating cloud credentials: cloud "manual" not found (not found)

Attempting to add manual cloud A to controller B fails too:

$ juju add-cloud --controller three-three manual
Adding a cloud of type "manual" might not function correctly on this controller.
If you really want to do this, use --force.
$ juju add-cloud --controller three-three manual --force
Could not upload cloud to a controller: invalid cloud: empty auth-types not valid (not valid)

Manual clouds have empty auth-types: https://github.com/juju/juju/blob/8a619331a7d4cb4baa2819e50fe7f76f5797f49b/provider/manual/credentials.go#L15

[Heather Lanigan (hmlanigan)]

See https://bugs.launchpad.net/juju/+bug/1994522 for the setup required to bootstrap a manual cloud with juju 3.x