Unable to set user password following documentation

[sandrobonazzola]

Describe the bug
Documentation for setting up a password for a user on coreos doesn't work for me.
I'm following: https://docs.fedoraproject.org/en-US/fedora-coreos/authentication/#_using_password_authentication.
It says:

To generate a secure password hash, use the mkpasswd command:

$ mkpasswd --method=yescrypt
Password:
$y$j9T$A0Y3wwVOKP69S.1K/zYGN.$S596l11UGH3XjN...

I'm on CentOS Stream 8 which I used for the bastion of an OKD deployment. I run: dnf provides "*/mkpasswd" getting:

expect-5.45.4-5.el8.x86_64 : A program-script interaction and testing utility
Repo        : baseos
Matched from:
Filename    : /usr/bin/mkpasswd

Then I install it: dnf install expect. But running the suggested command:

mkpasswd --method=yescrypt
passwd: bad argument --method=yescrypt: unknown option

Reproduction steps
Steps to reproduce the behavior:

1. see above description

Expected behavior
documentation should provide exact steps to be able to set the password for coreos users

Actual behavior
can't setup a password for the user given existing documentation

Ignition config
Please attach your FCC or Ignition config used to provision your system. Be sure to sanitize any private data. If not using FCCT to generate your Ignition config, does the Ignition config pass validation using ignition-validate?

Additional information
Add any other information about the problem here.

[bgilbert]

The documentation for Fedora CoreOS does not necessarily apply to CentOS Stream.

[sandrobonazzola]

The documentation for Fedora CoreOS does not necessarily apply to CentOS Stream.

No problem with that but the Fedora CoreOS documentation doesn't tell on which OS the documented command actually works.
And no, mkpasswd is not available within a Fedora CoreOS installation.

[bgilbert]

Oh, I see your point. Yeah, that's a good point; thanks for the report.

[sandrobonazzola]

Looks like the documented commands works on Fedora 34 with the following package:

$ rpm -qf `which mkpasswd`
mkpasswd-5.5.9-1.fc34.x86_64

[travier]

Running that command from a Fedora container might be the easiest workaround.

[bgilbert]

Created a mkpasswd container and documented it in #370.