98 lines
2.8 KiB
Nix
98 lines
2.8 KiB
Nix
{
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roles.telegraf.perInstance =
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{ settings, ... }:
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{
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nixosModule =
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{
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config,
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pkgs,
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lib,
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...
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}:
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let
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jsonpath = /tmp/telegraf.json;
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in
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{
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networking.firewall.interfaces = lib.mkIf (settings.allowAllInterfaces == false) (
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builtins.listToAttrs (
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map (name: {
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inherit name;
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value.allowedTCPPorts = [ 9273 9990 ];
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}) settings.interfaces
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)
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);
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systemd.services.telegsaf-json.script = "${pkgs.miniserve}/bin/miniserve -p 9990 ${jsonpath}";
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networking.firewall.allowedTCPPorts = lib.mkIf (settings.allowAllInterfaces == true) [ 9273 ];
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clan.core.vars.generators."telegraf-password" = {
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files.telegraf-password.neededFor = "users";
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files.telegraf-password.restartUnits = [ "telegraf.service" ];
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runtimeInputs = [
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pkgs.coreutils
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pkgs.xkcdpass
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pkgs.mkpasswd
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];
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script = ''
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PASSWORD=$(xkcdpass --numwords 4 --delimiter - --count 1 | tr -d "\n")
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echo "BASIC_AUTH_PWD=$PASSWORD" > "$out"/telegraf-password
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'';
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};
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services.telegraf = {
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enable = true;
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environmentFiles = [
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(builtins.toString
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config.clan.core.vars.generators."telegraf-password".files.telegraf-password.path
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)
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];
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extraConfig = {
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agent.interval = "60s";
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inputs = {
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diskio = { };
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kernel_vmstat = { };
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system = { };
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mem = { };
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systemd_units = { };
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swap = { };
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exec =
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let
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currentSystemScript = pkgs.writeShellScript "current-system" ''
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printf "current_system,path=%s present=0\n" $(readlink /run/current-system)
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'';
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in
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[
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{
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# Expose the path to current-system as metric. We use
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# this to check if the machine is up-to-date.
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commands = [ currentSystemScript ];
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data_format = "influx";
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}
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];
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};
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outputs.file = {
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files = [ jsonpath ];
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data_format = "json";
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json_timestamp_units = "1s";
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};
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outputs.prometheus_client = {
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listen = ":9273";
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metric_version = 2;
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basic_username = "prometheus";
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basic_password = "$${BASIC_AUTH_PWD}";
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};
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};
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};
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};
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};
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}
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