Hello how to restart containers/pods on rancher UI ?

There isn’t really a ‘restart’ option in kubernetes. You can ‘redeploy’ a workload from its kebab menu in either ui or you can scale it down to 0 then back up to whatever it was previously.

where ?

that looks like the kebab menu of a pod?

nope. i don't know kebab.

Sorry, kebab menu is the 3 vertical dots