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> I wonder if google has database nodes in containers?

I've been wondering this for a while. I'm sure some of the big players do it, but I'd really like to see a case study from one of them.

Google runs MySQL on Borg internally.

Same for Bigtable and Spanner.

I assume these guys have their own network controller and kickass optic fiber links. Network attached storage in poor cloud environments leads to issues.

YouTube runs MySQL on Borg too, and they open sourced their management solution. - http://vitess.io

Yes stateful sets became beta in k8s 1.5 - it's very much a win to run your test suite against a recent (within seconds) production database container that was spun up by CI. Yes you can do this with VMs but that would take 30 seconds :-)

> I wonder if google has database nodes in containers?

Yes

Kubernetes

Google doesn't use Kubernetes internally (except for their google cloud hosted Kubernetes offering - GKE)

Amazon has fully managed database containers: https://aws.amazon.com/rds/

They aren't containers, these are VMs.