At work, we're running a hybrid container/vm setup. We host the applications from our dev-teams as containers, since there is a lot of them and this allows them

At work, we're running a hybrid container/vm setup. We host the applications from our dev-teams as containers, since there is a lot of them and this allows them to do most of the work to integrate new apps with the stack. However, the actual data stores like postgres, glusterfs and such are simple VMs for a simple reason: It has less failure modes and many of the failure modes on a VM are less subtle and strange to deal with. And very few failure modes on a VM go straight to irrecoverable dataloss. In fact, the company I work at has deployed production like that for many years when our needs were simpler with just 1-2 applications. 1-4 application VMs provisioned by a config management, maybe a loadbalancer, maybe 1-2 DB VMs behind it. Worked like a charm until the new parent company started throwing loads of complexity at it.