[How to] Run Flatcar Container Linux on Proxmox

[ddt3]

I started using Flatcar Container Linux to run my docker containers on Proxmox sometime ago. At some point I realized that I wanted a more structured approach to creating a flatcar vm (read: more automated). So I started creating some scripts that made that possible.

Next to that I created some Butane (yaml) snippets that I can include in other Butane files (e.g. add my ssh keys to all flatcar vms at ignition, add docker-compose, etc.).

I put those scripts and Butane (yaml) files here:
https://github.com/ddt3/proxmox-flatcar

Excerpt from the README:
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Overview of the process steps​

The following steps need to be performed

1. Create a Butane (yaml) file for a new flatcar vm
2. Run create_vm.sh
   It will automatically:
   1. Convert Butane file(s) to ignition files
   2. Transfer the "start" ignition file to proxmox
   3. Create a VM using a flatcar image
   4. Add the ignition file to the VM
   5. Start the VM

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More detailed information on github.

Hope this is useful to others too.

Cheers,

Dries

 

[ddt3]

I have changed the scripts a bit, to make it more generic (and still working on it).

I am also trying to get rid of the need for a webserver (by merging local ignition files) but at the moment it is not possible to include multiple local files in a butane yaml (raised that as a butane issue for that).

Ideas for change that I have:

• Remove need for webserver
• If still using a webserver: upload of ign files to webserver
  I run my scripts on the webserver, so at this moment I have no need for upload " to the webserver
• Put all config items in a config file

For now, these scrips serve my purpose. I would make it more generic because I think it is fun to do so.