Immutable Software Deploys Using ZFS Jails on FreeBSD • Hacker News Board

Re: Immutable Software Deploys Using ZFS Jails on FreeBSD

#51

Post by tiltowait » Sat, Nov 08, 2025, 10:50 PM UTC

MathiasPius wrote: post #48

badgersnake wrote: post #38

Earlier quoted context omitted.

Not Hetzner, sadly.

You can always upload your own, it's pretty simple doing so in a reproducible manner using something like Packer, but even without it you can just boot a VM into a rescue system, write your OS of choice to the VM disk and reboot.

Is it doable on a VPS? The documentation made it sound like it was for dedicated only. I went with OVH for this reason (which was cheaper anyway).

Re: Immutable Software Deploys Using ZFS Jails on FreeBSD

#52

Post by dzogchen » Sun, Nov 09, 2025, 7:26 AM UTC

You’re creating a daemon but it is not restarting when it crashes, is it?

Re: Immutable Software Deploys Using ZFS Jails on FreeBSD

#53

Post by MathiasPius » Sun, Nov 09, 2025, 5:44 PM UTC

tiltowait wrote: post #51

MathiasPius wrote: post #48

Earlier quoted context omitted.

You can always upload your own, it's pretty simple doing so in a reproducible manner using something like Packer, but even without it you can just boot a VM into a rescue system, write your OS of choice to the VM disk and reboot.

Is it doable on a VPS? The documentation made it sound like it was for dedicated only. I went with OVH for this reason (which was cheaper anyway).

It is, yeah, the process is the same: boot into a rescue system running in memory, and do whatever you want with the disk.

Re: Immutable Software Deploys Using ZFS Jails on FreeBSD

#54

Post by delian66 » Wed, Nov 12, 2025, 11:20 AM UTC

randmeerkat wrote: post #15

stingraycharles wrote: post #11

Earlier quoted context omitted.

Yeah I would love to use FreeBSD jails with ZFS and everything, it’s just that the whole cloud and containerization thing happened based on Linux and FreeBSD just never made it into that ecosystem. You’ll be sacrificing a lot and have to hand-roll a lot if you want your organization to switch from Linux+docker to FreeBSD+jails

Hacker News serves +4M requests per day using nothing but two FreeBSD servers…

4M requests/day is ~46 requests/second , for content, that could be cached a lot. Even if you have spikes that are 100x bigger than the average, that would be 4600r/s which does not seem like much in 2025.