I want to build something to monitor the [[WP:DYK]] system on enwiki. I want to look at the length of various queues: nominations, approved nominations, number of hook sets ready for publication, perhaps a few more. Update times will be perhaps as low as once per day, certainly no faster than once per hour. Initially all I want to do is graph these. Eventually I might want to do some alerting.

In the old days, I would just have a simple script that threw some numbers as statsd. Looking at https://wikitech.wikimedia.org/wiki/Prometheus, it looks like that translates into using the pushgateway, but it's far from clear what I need to do to set this up. The docs talk about puppet, and certificates. Can somebody walk me through the setup?