Hi @owan!
Yes, it is possible.
In your http frontend configuration, you simply add a rule like this: http-request redirect scheme https if ACLXXX
where ACLXXX represents the acl rule that identifies your server.
And then, obviously, you have to configure the https frontend and backend.
Notice however that I’m using haproxy v2.9.d6 (development version) so something may be different.