Writing Your First Kubernetes Operator: An introduction to Kubernetes operators using the Operators SDK. You can also take a look at Kubebuilder, a framework I used in the past for developing a couple of operators ( 1, 2). I could not say which one is better for developing an operator nowadays, but I guess the Operators SDK must have a bigger community taking into account it is supported by RedHat…

There is also a new framework for developing operators in Python from the guys of Zalando: kopf. Looking at the examples in the repo I think Python could provide a lot of simplicity to your operator logic, removing a lot of boilerplate and going straight to the point…