[chousuke]

But if you run your containers on GKE you are a sysadmin. The system might not be a traditional UNIXy one, but there are still elements you need to take care of that aren't just application development:

Do your containers have security vulnerabilities? How do you keep track of them?

How do they communicate? What's your blast radius if something is compromised?

Who has access to your container management plane?

Have you correctly sized your system?

Is it resilient to failures?

What about your data? Is it backed up? Have you tested the backups? Do you have volumes that can fill up? I/O limits?

All those are sysadmin things that will never go away.