You can create an iRODS server in the Research Cloud portal using the catalog item "iRODS server".
This catalog item will install irods version 4.2.11 on a centos 7 vm.
You need to provide a CO secret for this catalog item:
- rods_password: the value of this secret is going to be used as irods admin user "rods" password.
The linux user for irods is "irods". You can check irods config if you become the irods user by running "sudo su - irods".