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Comment by williamdclt | Hacker News Reader

Many companies run k8s for compute and use rds/sqs/redis outside of it. For example RDS is not just hosted PG, it has a whole bunch of features that don’t come out of the box (you do pay for it, I’m not giving an opinion as to whether it’s worth the price)

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Yup. We do that.

Anything stateful is not allowed inside the cluster. PVs are annoying enough without having to manage a DB bolted onto what was originally designed for stateless web services.

My db is my cluster. It's been stable for years but I'm afraid to touch it. There's a long outstanding issue in k8s that makes PVs harder to resize than it should be. And they're just more complicated. Trying to move to managed MySQL now. It'll cost me a bunch more but at least I get a fail over node which I don't know how to set up myself... Still no master-master though, apparently that's not an option.

Actually resizing PVC depends on the CSI drive. Some support easy resizing, some require the volume to be detached. You can double check your CSI driver and might just need to patch your storage class.

Agreed running databases without operators that can handle replication, master promotion backups and PIT restore is super scary. Most of the modern operators support all of these operations.

Yea RDS makes your life easy, notifications and easy application of security patches both OS and DB level (minor version upgrades). Easy upgrade of major versions, easy upgrade of storage, RAM and compute (but not so easy to downgrade), easy options for replication, Blue/Green deployments etc to name a few.

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