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:
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? http://www.ovirt.org/images/wiki/Deploy-With-Gluster.png?1475063791 * 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