Ask HN: Which Kubernetes Distribution are you using?

With the recent CoreOS EOL we are looking for another K8s distribution which has immutable OS. Main reason for immutable OS is that you have a golden image and you can make sure nobody can install software after it is up and running. This saves a lot of time as you are sure all the installations work the same and there are no surprises.

Currently there are several options like Fedora CoreOS, FlatCar Linux, Clear Linux OS etc.

Would like to know from HN, what is your experience and which K8s distribution are you using in production?