Commit 406a6dfa authored by zimbatm's avatar zimbatm
Browse files

cloud-init module: adopt the settings format 

This makes it easier to for example set `datasource_list = [ "Vultr" ];`
so that cloud-init doesn't scan trough all of the datasources when you
know on which target the system is going to be deployed.

Previously, one had to copy-paste the default config and adapt it.
parent 4a1fd4af

nixos/modules/services/system/cloud-init.nix

+77 −50
Original line number Diff line number Diff line
@@ -16,6 +16,8 @@ let 
  ++ optional cfg.btrfs.enable btrfs-progs

  ++ optional cfg.ext4.enable e2fsprogs

  ;

  settingsFormat = pkgs.formats.yaml { };

  cfgfile = settingsFormat.generate "cloud.cfg" cfg.settings;

in

{

  options = {
@@ -64,65 +66,90 @@ in 
        '';

      };



      settings = mkOption {

        description = mdDoc ''

          Structured cloud-init configuration.

        '';

        type = types.submodule {

          freeformType = settingsFormat.type;

        };

        default = { };

      };



      config = mkOption {

        type = types.str;

        default = ''

          system_info:

            distro: nixos

            network:

              renderers: [ 'networkd' ]

          users:

             - root



          disable_root: false

          preserve_hostname: false



          cloud_init_modules:

           - migrator

           - seed_random

           - bootcmd

           - write-files

           - growpart

           - resizefs

           - update_hostname

           - resolv_conf

           - ca-certs

           - rsyslog

           - users-groups



          cloud_config_modules:

           - disk_setup

           - mounts

           - ssh-import-id

           - set-passwords

           - timezone

           - disable-ec2-metadata

           - runcmd

           - ssh



          cloud_final_modules:

           - rightscale_userdata

           - scripts-vendor

           - scripts-per-once

           - scripts-per-boot

           - scripts-per-instance

           - scripts-user

           - ssh-authkey-fingerprints

           - keys-to-console

           - phone-home

           - final-message

           - power-state-change

        default = "";

        description = mdDoc ''

          raw cloud-init configuration.



          Takes precedence over the `settings` option if set.

        '';

        description = mdDoc "cloud-init configuration.";

      };



    };



  };



  config = mkIf cfg.enable {

  config = {

    services.cloud-init.settings = {

      system_info = mkDefault {

        distro = "nixos";

        network = {

          renderers = [ "networkd" ];

        };

      };



    environment.etc."cloud/cloud.cfg".text = cfg.config;

      users = mkDefault [ "root" ];

      disable_root = mkDefault false;

      preserve_hostname = mkDefault false;



      cloud_init_modules = mkDefault [

        "migrator"

        "seed_random"

        "bootcmd"

        "write-files"

        "growpart"

        "resizefs"

        "update_hostname"

        "resolv_conf"

        "ca-certs"

        "rsyslog"

        "users-groups"

      ];



      cloud_config_modules = mkDefault [

        "disk_setup"

        "mounts"

        "ssh-import-id"

        "set-passwords"

        "timezone"

        "disable-ec2-metadata"

        "runcmd"

        "ssh"

      ];



      cloud_final_modules = mkDefault [

        "rightscale_userdata"

        "scripts-vendor"

        "scripts-per-once"

        "scripts-per-boot"

        "scripts-per-instance"

        "scripts-user"

        "ssh-authkey-fingerprints"

        "keys-to-console"

        "phone-home"

        "final-message"

        "power-state-change"

      ];

    };

  } // (mkIf cfg.enable {



    environment.etc."cloud/cloud.cfg" =

      if cfg.config == "" then

        { source = cfgfile; }

      else

        { text = cfg.config; }

    ;



    systemd.network.enable = cfg.network.enable;
@@ -198,5 +225,5 @@ in 
      description = "Cloud-config availability";

      requires = [ "cloud-init-local.service" "cloud-init.service" ];

    };

  };

  });

}