Kubernetes can be a sign that are you making things more complicated than they should be, too early. But if you actually have made things complicated enough (whether through essential or accidental complexity) that you have problems that k8s is good at solving, I really hope you have it instead of some hand rolled solution.

I feel the same way about commercial APM tools. Obviously in a perfect world, you would have software so simple and fast that they’re unnecessary. Maybe every month or two someone has to grep some logs that are already in place. Once you’ve gotten yourself in situation where this is obviously not true, having Datadog, New Relic or similar set up (or using k8s instead of 100 unversioned shell scripts by someone who doesn’t work there anymore) will make your inevitable distributed microservice snafu get resolved in hours rather than a longer business-risking period.