Kubernetes on Hetzner: cutting my infra bill by 75%
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Re: Kubernetes on Hetzner: cutting my infra bill by 75%
#2[deleted]
Re: Kubernetes on Hetzner: cutting my infra bill by 75%
#3> Hetzner volumes are, in my experience, too slow for a production database. While you may in the past have had a good experience running customer-facing databases on AWS EBS, with Hetzner's volumes we were seeing >50ms of IOWAIT with very low IOPS.
There is a surprisingly easy way to address this issue: use (ridiculously cheap) Hetzner metal machines as nodes. The ones with nvme storage offer excellent performance for dbs and often have generous amounts of RAM. I'd go as far as to say you'd be better off to invest in two or more beefy bare metal machines for a master-replica(s) setup rather than run the db on k8s.
If you don't want to be bothered with the setup, you can use one of many modern packages such as Pigsty: https://pigsty.cc/ (not affiliated but a huge fan).
Re: Kubernetes on Hetzner: cutting my infra bill by 75%
#4> Hetzner volumes are, in my experience, too slow for a production database. While you may in the past have had a good experience running customer-facing databases on AWS EBS, with Hetzner's volumes we were seeing >50ms of IOWAIT with very low IOPS. There is a surprisingly easy way to address this issue: use (ridiculously cheap) Hetzner metal machines as nodes. The ones with nvme storage offer excellent performance f…
Thanks, hadn’t heard of pigsty. As you say, I had to use nvme ssds for the dbs, the performance is pretty good so I didn’t look to get metal nodes.
Re: Kubernetes on Hetzner: cutting my infra bill by 75%
#5What about cluster autoscaling?
Re: Kubernetes on Hetzner: cutting my infra bill by 75%
#6What about cluster autoscaling?
I didn’t touch on that in the article, but essentially it’s a one line change to add a worker node (or nodes) to the cluster, then it’s automatically enrolled.
We don’t have such bursty requirements fortunately so I have not needed to automate this.
Re: Kubernetes on Hetzner: cutting my infra bill by 75%
#7Lovely website.
Re: Kubernetes on Hetzner: cutting my infra bill by 75%
#8Great write up Bill!
Re: Kubernetes on Hetzner: cutting my infra bill by 75%
#9I’m planning on doing something similar but want to use Talos with bare metal machines. I suspect to see similar price reductions from our current EKS bill.
Re: Kubernetes on Hetzner: cutting my infra bill by 75%
#10I haven't used it personally, but https://github.com/kube-hetzner/terraform-hcloud-kube-hetzne... looks amazing as a way to setup and manage kubernetes on Hetzner. At the moment I'm on Oracle free tier, but I keep thinking about switching to it to get off... Well Oracle.