system_info can change the distro

[Mina Galić]

In triaging https://bugs.launchpad.net/cloud-init/+bug/1854594 i found that a network provided system_info can actively change which distro class is picked:

system_info:
    default_user:
        lock_passwd: true
        name: root
        shell: /bin/bash
    distro: ubuntu

will use distro/__init__.py's create_user() and hence lock_passwd() methods!

If this is a feature, it should be documented.
If this is a bug, it needs fixing.

[Ryan Harper (raharper)]

Thanks for filing the issue. Can you attach the tarball from running:

sudo cloud-init collect-logs

If not that, then a copy of /var/log/cloud-init.log would also work.

[Ryan Harper (raharper)]

Also, could you expand on what you mean by "network provided system_info" ?

[Mina Galić (minagalic)]

in this case, the change is triggered by vendor-data, which in hetzner's case is coming from network (unless already cached)

[Ryan Harper (raharper)]

Do you have a copy of what hetzner is setting in vendor-data?

Users can always disable vendor-data or override it; Though I generally would say, vendor-data overriding values that users typically provide is bad form.

[Chad Smith (chad.smith)]

the easiest way to get vendor data is
sudo cloud-init query vendordata

[Mina Galić (minagalic)]

vendor data, or at least everything we can get out right now, because of how broken the fbsd code-paths are broken. blame me and @goneri on this one.

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[Launchpad Janitor (janitor)]

[Expired for cloud-init because there has been no activity for 60 days.]

[James Falcon (falcojr)]

Tracked in Github Issues as https://github.com/canonical/cloud-init/issues/3511