2025-07-10 09:42:22 -07:00
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# nixos-systems
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These are the system definitions for various systems being run by Gleipnir Technology.
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## From Zero
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Hat tip to [the negation](https://thenegation.com/posts/nixos-do-colmena/) for some ideas here.
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Build a custom image for Digital Ocean:
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```
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2025-07-10 21:22:29 +00:00
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> nix-build digitalocean/custom-image.nix
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...
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/nix/store/rm84j1a5bskhg2z8gz633m4apjyg848c-digital-ocean-image
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> ls -lh result/
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nixos-image-digital-ocean-25.05pre-git-x86_64-linux.qcow2.gz nix-support/
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2025-07-10 09:42:22 -07:00
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```
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2025-07-10 21:22:29 +00:00
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In order to "upload" the image to Digital Ocean you'll need to make the image available via URL. We can use Gleipnir static storage as an example:
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```
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rsync result/nixos-image-digital-ocean-25.05pre-git-x86_64-linux.qcow2.gz static.gleipnir.technology:/tmp
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```
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Make sure the image is accessible via a public URL.
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Then upload either through the web interface, or using [doctl](https://docs.digitalocean.com/reference/doctl/)
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```
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> doctl compute image create "Gleipnir NixOS 25.05" -v --image-description "NixOS 25.05 with ssh keys for eliribble baked in" --image-distribution nixos-25.05 --image-url "https://static.gleipnir.technology/nixos-image-digital-ocean-25.05pre-git-x86_64-linux.qcow2.gz" --region sfo3 --tag-names nixos
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ID Name Type Distribution Slug Public Min Disk Created
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192948683 Gleipnir NixOS 25.05 custom Unknown OS false 0 2025-07-10T20:22:43Z1G
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```
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Then start a droplet using that image:
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```
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> doctl compute droplet create "test2.nidus.cloud" --enable-ipv6 --image 192948683 --project-id ce2159e8-02f5-4169-8943-f34ccf812d23 --region sfo3 --size s-1vcpu-1gb --ssh-keys 48777034 --tag-name nixos --wait
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Error: POST https://api.digitalocean.com/v2/droplets: 422 (request "116c778d-8e72-4099-a7c6-c3ad37557c4c") image is not compatible with ipv6
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```
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Oh. [Well that sucks](https://docs.digitalocean.com/products/custom-images/details/limits/). Digital Ocean can't do IPv6 on custom images.
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## With cloud-init
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Cloud init data:
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curl http://169.254.169.254/metadata/v1.json
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