# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).

{ config, pkgs, ... }:
let
  vmPort = 8428;
  vs = config.vault-secrets.secrets;
in {
  imports = [ ];

  networking.hostName = "victoriametrics";

  # This value determines the NixOS release from which the default
  # settings for stateful data, like file locations and database versions
  # on your system were taken. It‘s perfectly fine and recommended to leave
  # this value at the release version of the first install of this system.
  # Before changing this value read the documentation for this option
  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
  system.stateVersion = "21.11"; # Did you read the comment?

  # Additional packages
  environment.systemPackages = with pkgs; [ ];

  networking.firewall.allowedTCPPorts = [ vmPort config.services.grafana.port ];
  networking.firewall.allowedUDPPorts = [ vmPort ];

  services.victoriametrics = {
    enable = true;
    listenAddress = ":${toString vmPort}";
    # Data Retention period in months
    retentionPeriod = 12;
  };

  vault-secrets.secrets.grafana = { 
    user = "grafana";
    group = "grafana";
  };

  services.grafana = {
    enable = true;
    addr = "0.0.0.0";
    port = 2342;
    security.adminPasswordFile = "${vs.grafana}/password";
  };
}