I'm configurating ISCSI gateway in Ceph Mimic (13.2.6) using ceph manual:

But i stopped in this problem: In manual says:
"Set the client’s CHAP username to myiscsiusername and password to myiscsipassword:
> /iscsi-target...at:rh7-client>  auth chap=myiscsiusername/myiscsipassword"

But I receive this response:
/iscsi-target...at:rh7-client> auth chap=myiscsitest/myiscsitestpasswd
Unexpected keyword parameter 'chap'.

The options disponibles are:

/iscsi-target...at:rh7-client> auth ?
To set authentication, specify username=<user> password=<password> [mutual_username]=<user> [mutual_password]=<password>

But if configure as asks:
auth username=myiscsitest password=myiscsitestpasswd
Failed to update the client's auth: Invalid password

I tried with high password complexibility, but the problem persists.

My questions:
- How is the correct mode for configure authentication?
- How contribute for update of documentation? A bug report has opened* for broken information of instalation of ceph-iscsi-gw, but was closed without update of documentation:https://github.com/ceph/ceph-ansible/issues/2707

Regards
Gesiel Bernardeds