And with hetzner you can rent bare metal servers as well. It is somewhat equivalent to renting rack space, but they bring the servers, not you. The advantage is that if a server fails, they can provision a new one in less than 1 hour. The disadvantage is that you are probably running on somewhat refurbished hardware that has a higher prob of failing (at least these were the rumors in the past). 5-6 years ago, this was (by far) the most cost effective solution for Hadoop/HDFS deployments. IDK what the status quo is now.
As others have pointed out it is relatively easy to deploy small k3s clusters on Hetzner Cloud.
> The advantage is that if a server fails, they can provision a new one in less than 1 hour.
I can confirm that. I've been running a few servers with them and my experience is that the older ones had a failure every 2-3 years. Usually it was a disk, sometimes the power supply. Once 2 of 3 disks failed but I managed to rebuild the array (it was the HDD era so it took several hours), no data needed to be restored from backup.
But since 2018 I had no failures at all. And I'm happy to see their ecosystem grow.
As others have pointed out it is relatively easy to deploy small k3s clusters on Hetzner Cloud.