So, what do you do when one of your pods suddenly cannot connect to another, even though both nodes seem to be passing healthchecks and stuff? Spinning up a K8

So, what do you do when one of your pods suddenly cannot connect to another, even though both nodes seem to be passing healthchecks and stuff? Spinning up a K8s cluster "in the cloud" is easy and everyone jumps on that happy "look how simple it all is" bandwagon, forgetting than it's just the beginning of a very long journey. There are millions of blog articles of varying quality that explain how easy it is, because it's very simple to spam search engines retelling a story how to click a couple buttons or do some basic Terraform/CloudFormation/whatever. And here's what they don't tell you - maintaining this machinery is still your business, because all you get is a bunch of provisioned node machines and a cookiecutter to spin it up. Plus a bunch of scripts to handle most common scenarios (scaling, upgrading, some basic troubleshooting, etc). The rest is either on your or tech support (if you pay extra for it). And if you have a sysadmin-for-hire contract anyway, then its them who should have an opinion what's easy and what's hard. Contracting other people is always relatively easy - compared to what they do.