[ilovecaching]

The Makefile one is important. Make is still the best tool for managing a dependency graph, adding project commands, building artifacts of any kind, whether it be building docker images, binary objects, or spinning up integration environments. You can use make anywhere and everywhere, it's powerful but it's also simple on the surface and battle tested.

For DevOps in general I have learned to KISS, always know how your tools work, and focus on observability and low hanging automation. If you can't observe or understand how your systems works, you're screwed. You need metrics, logs, statistics, in one place that you can easily build queries with. You should be able to see everything at the fleet level down to the innards of each machine with no troubles.