This allows the VM to provide a `configuration.nix` file to the VM. The test doesn't work in sandbox because it needs Internet (however it works interactively).
70 lines
2.1 KiB
Nix
70 lines
2.1 KiB
Nix
{ pkgs, lib, ... }:
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with lib;
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{
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imports = [
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../profiles/qemu-guest.nix
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../profiles/headless.nix
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# The Openstack Metadata service exposes data on an EC2 API also.
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./ec2-data.nix
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./amazon-init.nix
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];
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config = {
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fileSystems."/" = {
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device = "/dev/disk/by-label/nixos";
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autoResize = true;
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};
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boot.growPartition = true;
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boot.kernelParams = [ "console=ttyS0" ];
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boot.loader.grub.device = "/dev/vda";
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boot.loader.timeout = 0;
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# Allow root logins
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services.openssh = {
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enable = true;
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permitRootLogin = "prohibit-password";
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passwordAuthentication = mkDefault false;
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};
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systemd.services.nova-init = {
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path = [ pkgs.wget ];
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description = "Fetch Metadata on startup";
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wantedBy = [ "multi-user.target" ];
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before = [ "apply-ec2-data.service" "amazon-init.service"];
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wants = [ "network-online.target" ];
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after = [ "network-online.target" ];
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script =
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''
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metaDir=/etc/ec2-metadata
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mkdir -m 0755 -p "$metaDir"
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echo "getting Openstack instance metadata (via EC2 API)..."
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if ! [ -e "$metaDir/ami-manifest-path" ]; then
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wget --retry-connrefused -O "$metaDir/ami-manifest-path" http://169.254.169.254/1.0/meta-data/ami-manifest-path
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fi
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if ! [ -e "$metaDir/user-data" ]; then
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wget --retry-connrefused -O "$metaDir/user-data" http://169.254.169.254/1.0/user-data && chmod 600 "$metaDir/user-data"
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fi
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if ! [ -e "$metaDir/hostname" ]; then
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wget --retry-connrefused -O "$metaDir/hostname" http://169.254.169.254/1.0/meta-data/hostname
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fi
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if ! [ -e "$metaDir/public-keys-0-openssh-key" ]; then
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wget --retry-connrefused -O "$metaDir/public-keys-0-openssh-key" http://169.254.169.254/1.0/meta-data/public-keys/0/openssh-key
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fi
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'';
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restartIfChanged = false;
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unitConfig.X-StopOnRemoval = false;
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serviceConfig = {
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Type = "oneshot";
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RemainAfterExit = true;
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};
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};
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};
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}
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