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How is Hetzner Cloud able to deploy servers in a few seconds unlike DigitalOcean, Vultr etc?
anbelevebel
Member
When we were starting our business on top of Hetzner Cloud, we tried a few other options as well such as Vultr, DigitalOcean etc and the first thing we noticed was that when you hit "Deploy" in Hetzner Cloud, your server is accessible (through SSH or whatnot) in no more than 30 seconds. Most of the time a lot less like 15 to 20 seconds.
Whereas with Vultr or DigitalOcean it takes a few minutes at best. Although a few minutes is not bad either, once you get used to mere seconds, you get used to it quick.
What might Hetzner be doing to achieve this that Vultr or DigitalOcean can't/not?
Comments
Not sure about DigitalOcean, but Vultr does OS updates (
apt-get upgrade) on first boot.Hetzner does it too fast.
I think they have one or a few running of each configuration, and simply change login details to what you’ve provided and reset some stats for it to look ”new”.
Yes, a conpiracy, but I stand behind it.
Make sense, pre-loading the image / vps. So they can just simply start it sounds plausible.
Part of it could be where the images are stored that installs read from. I was curious so I installed Debian on one of my systems (using Virtfusion, installing from a local cloudinit debian image) and it took 10 seconds to ping.
Yes, this is usually the case and why it takes so long on Vultr. You can check noVNC while the server is installing and it'll show that it's running updates and other stuff.
the deploy guy is faster then the rest ?
We are cloning an official cloud image and running the usual cloud-init first boot procedure. The instance is up and running within a maximum of 20-25 seconds.
The combination of fast NVMe's and the typically quick boot times of cloud images can help a lot
That would allow 3 second turn-around stable, and median ariynd 0.15second delivery time.
KVM itself is very fast.
Deployment time wasn’t an entirely uncommon complaint about DO if I recall. Though 5-10 complaints can feel like a lot to a support guy even after doing 5,000 tickets that mention nothing of the sort 😂
But it’s really hard to know what the bottlenecks are for one and aren’t for the other. Best we can do is speculate.
They might have just heavily optimised their base templates. If they're using COW, cloning the image is basically instant, and all that really needs to be reconfigured between instances are the network config (and they might be set up to use DHCP anyway), hostname, SSH host key and root password and/or root SSH authentication keys.
Hetzner cloud is very powerful, cheap and does not require a contract.
Hetzner uses high grade lubricant oil for there servers which results in less friction and high performance.
Hetzner cloud is
I don't know, I've just posted here to shove you my affiliate links in the footer
Copy on write storage, lean virtio kernel, lean base image, good cloud-init config?
Hetzner cloud is
Me too, I don't know. I've just posted here to shove you my affiliate links https://hetzner.cloud/?ref=fkCeAKqxk9H9 (Free 20 euro credit for Hetzner)
Agreed, because deploying from a custom snapshot takes quite some time.
And here I've been just spitting on it.
Well, snapshots are probably all stored on one, slow, centralized storage server while templates are probably cached on the local disks of their nodes
I'm pretty sure they start provisioning your host about 30s before you realize you wanted it.
Instant coffie just add water
I started playing with Hetzner Cloud for the first time this week, and it really is significantly faster than any other cloud provider as far as provisioning/deprovisioning.
With the big public clouds, everything always seems to take forever. Maybe things are faster if you're using the API. DO, Vultr, etc. are faster, but Hetzner seems to be at a level faster still.
I'm just working through the panel so your API mileage may vary.