| clay | hey Im trying to use cloud init to setup a physical server, and am trying to use the dmi variable sub to specify metadata. I realized the cloud init thats running is v22.2, how can I make cloud init update before accessing the seedfrom url to have dmi variable substitution work? | 00:24 |
|---|---|---|
| === clay is now known as claycovariant | ||
| claycovariant | hey im trying to use cloudinit to setup a physical server, how can i choose which cloud init version im running? Im trying to install jammy LTS | 00:27 |
| minimal | "how do I choose which cloud-init version"? What are you booting on the physical machine? Are you trying to add a cloud-init package AFTER booting the machine? | 00:31 |
| minimal | cloud-init is designed to run on 1st boot to do initial configuration | 00:33 |
| claycovariant | im using pxe boot to boot the physical machine passing in a command line with `vmlinuz autoinstall ip=dhcp auto=true cloud-config-url=/dev/null url=http://{PXE_SERVER}/isos/ubuntu22base.iso ds="nocloud-net;s=http://{PXE_SERVER}/cloudinit/__dmi.chassis-serial-number__/"` | 00:33 |
| claycovariant | yeah thats what im trying to do, use cloud-init to setup the machine, but I want to use cloud-init 23.1 to use dmi variable substitution to pass different metadata based on the machine | 00:34 |
| minimal | is this Subquity/Curtin installer? | 00:34 |
| claycovariant | right now its running 22.2 | 00:35 |
| claycovariant | i believe so | 00:35 |
| dbungert | the version of cloud-init that will run will be the version built into the the install iso | 00:35 |
| minimal | I use cloud-init to setup physical machines but I use a disk image prepared with cloud-init installed | 00:35 |
| minimal | so from your command example above you're trying to pass "ds=" and "cloud-config-url" to the Ubuntu installer, not to cloud-init it seems | 00:36 |
| claycovariant | yeah, which from my understanding then calls cloud init at one point in the install | 00:37 |
| claycovariant | so i need to package cloud init into my iso? | 00:37 |
| minimal | that's Subquity/Curtin, a Ubuntu-specific way of installing that uses cloud-init, it's not cloud-init "proper" | 00:37 |
| dbungert | if you're using official Ubuntu ISOs cloud-init will already be present in there | 00:37 |
| minimal | dbungert: but that's via Subiquity/Curtin, right? | 00:38 |
| claycovariant | that ubuntu22base.iso is just an official ubuntu iso renamed | 00:38 |
| claycovariant | I was unclear on the differences of subiquity and cloud init, they seemed very similar looking at the repos | 00:39 |
| dbungert | subiquity is the installer, subquity interacts with cloud-init in two ways | 00:39 |
| dbungert | cloud-init is present in the install environment, which means you can send any cloud-config it knows how to process, to customize the installation environment | 00:40 |
| minimal | AFAIK there is a slight difference in the YAML used, subiquity has at least one additional "layer" | 00:40 |
| dbungert | cloud-init can be used to pass autoinstall to subiquity | 00:40 |
| dbungert | then finally, cloud-init runs in the target system on first boot | 00:40 |
| minimal | I don't think you can get the installer to update the cloud-init version so that it understands/uses the DMI-related url stuff you are passing the installer before the installer uses the url stuff you are passing in order for it to install the OS ;-) | 00:43 |
| dbungert | claycovariant: https://github.com/mwhudson/livefs-editor should let you put the newer cloud-init version into a modified version of the iso | 00:46 |
| claycovariant | thanks! ill give that a shot | 00:47 |
| blackboxsw | thx dbungert. claycovariant: I use something like the following locally to inject/upgrade cloud-init in isos for manual testing (leveraging livefs-editor) https://paste.ubuntu.com/p/9PVvsH69HM/ note it's pulling the version of cloud-init in from our daily build PPA so use at your own risk, but it's a good template on which to build different livefs-editor "actions" if you are rolling your own custom isos. | 01:00 |
| minimal | there seem to be quite a few Ubuntu Curtin/Subiquity related questions cropping up here recently, is there another Ubuntu channel that people should be referred to? | 01:11 |
| dbungert | there is significant overlap. Some Subiquity questions could be redirected to an Ubuntu channel, but others will ultimately be cloud-init. Or both. | 01:25 |
| === meeena is now known as meena | ||
| holmanb | meeena: interesting, that is a bit surprising | 15:26 |
| * holmanb will read netbsd docs to be sure | 15:27 | |
| meena | holmanb: i dunno. these systems diverged 30 years ago. and while there's a lot of cross pollination, something as low level as how do they boot their kernel will be fairly set in their own ways. c.f.: OpenBSD not having any loadable kernel modules | 16:41 |
| holmanb | meena: sysctl maybe? I see you can set / get kernel env vars, much like kenv on freebsd | 20:09 |
| meena | holmanb: i don't see anything relevant or useful https://man.netbsd.org/sysctl.7 | 20:18 |
| holmanb | meena: there is an examlpe in https://man.netbsd.org/NetBSD-8.0/sysctl.8 | 20:25 |
| meena | holmanb: which one?? | 20:29 |
| holmanb | this part | 20:31 |
| holmanb | https://dpaste.org/QWuFY | 20:31 |
| meena | that's still something you'd have to write into the image tho, not an external mechanism | 20:33 |
| === clay is now known as claycovariant | ||
| holmanb | meena: true - isn't that how kenv works too? if not, then I misunderstood that | 21:06 |
| meena | kenv reads kernel_options. you can set them on the bootloader | 21:09 |
| meena | what I'm unclear about is how to chain that | 21:09 |
| meena | like, how do i tell virtio to pass those options to the FreeBSD bootloader | 21:10 |
| * meena asks in #qemu on OFTC | 21:11 | |
| holmanb | I think you can use -append, but for that I think you need to also specify the kernel. | 21:12 |
| holmanb | meena: I will drop the netbsd changes from the PR, since I don't see a documented way to do this. | 21:19 |
| meena | 👍 | 21:21 |
Generated by irclog2html.py 2.7 by Marius Gedminas - find it at mg.pov.lt!