Anything you can do by hand -- you can do with a shell script. Anything you can do with a simple shell script can be done with ansible, chef, fabric, or whatev

Anything you can do by hand -- you can do with a shell script. Anything you can do with a simple shell script can be done with ansible, chef, fabric, or whatever else you might want to use. I use chef. But years ago when before any of those existed, I used CFEngine. And before that, perl scripts. And before that, shell scripts. They've all worked just fine. Those tutorials are teaching you how PostgreSQL works. And you need to know that before you can effectively automate anything. As my band teacher used to say back in school: "if you can't say it, you can't play it".