I've previously mentioned that you shouldn't have the version of your software as either a target label, or exposed via a label on all metrics of your server as it'll make using the metrics more challenging. What should you do instead?
How you choose to name metrics is important. If everyone choose different schemes it'd lead to confusion, irritation and prevent us from sharing and reusing each others' work. I'd like to share some guidelines to help keep things sane for everyone.