Hello Didi.

Thank you for the information.

> There is an option to configure hosted-engine when adding a host from
> the web ui.
> In 4.1 this is the only way to add a hosted-engine host:
> 
> https://bugzilla.redhat.com/1366183

Does web ui include Cockpit UI? 

I tried to install additional Hosted Engine from Cockpit UI but I received a same error which I received on cli.

> [ ERROR ] The selected device already contains a storage domain.

I tried from "Start" link, but must I use "Deploy with Gluster *" like following link?

* In my case, it's "Hosted Engine with Gluster"

I also tried "Hosted Engine with Gluster", but when I ran "deploy" after option selection, 

"Deployment failed" was displayed in a moment and I could not find a log, so I gave up. 

Also, when running "Hosted Engine with Gluster", many things are done automatically 

(create LV and create GlusterFS volume etc.), so I believe there is just another way to simply add hosted engine.

If you know, could you please tell me which link should be executed to add hosted-engine?

Thanks,

Tatsuya