You also can have a look on slides of my talk about at PGConf.US 2017: https://www.slideshare.net/AlexanderKukushkin1/patroni-ha-po...

Talk was also recorded but video is not yet published.

And one more thing, you can try to run a Live-Demo the same way as I did it during presentation: https://cyberdemn.blogspot.de/2017/04/patroni-ha-postgresql-...