58 lines
1.5 KiB
Nix
58 lines
1.5 KiB
Nix
{pkgs, config, lib, ...}:
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with lib;
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let
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cfg = config.services.hologram-agent;
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cfgFile = pkgs.writeText "hologram-agent.json" (builtins.toJSON {
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host = cfg.dialAddress;
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});
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in {
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options = {
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services.hologram-agent = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = lib.mdDoc "Whether to enable the Hologram agent for AWS instance credentials";
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};
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dialAddress = mkOption {
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type = types.str;
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default = "localhost:3100";
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description = lib.mdDoc "Hologram server and port.";
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};
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httpPort = mkOption {
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type = types.str;
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default = "80";
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description = lib.mdDoc "Port for metadata service to listen on.";
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};
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};
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};
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config = mkIf cfg.enable {
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boot.kernelModules = [ "dummy" ];
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networking.interfaces.dummy0.ipv4.addresses = [
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{ address = "169.254.169.254"; prefixLength = 32; }
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];
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systemd.services.hologram-agent = {
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description = "Provide EC2 instance credentials to machines outside of EC2";
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after = [ "network.target" ];
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wantedBy = [ "multi-user.target" ];
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requires = [ "network-link-dummy0.service" "network-addresses-dummy0.service" ];
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preStart = ''
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/run/current-system/sw/bin/rm -fv /run/hologram.sock
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'';
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serviceConfig = {
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ExecStart = "${pkgs.hologram}/bin/hologram-agent -debug -conf ${cfgFile} -port ${cfg.httpPort}";
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};
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};
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};
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meta.maintainers = with lib.maintainers; [ ];
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}
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