95 lines
2.3 KiB
Nix
95 lines
2.3 KiB
Nix
{
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nodes,
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lib,
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config,
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...
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}:
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with lib; let
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name = "prometheus";
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cfg = config.services.skynet."${name}";
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# dont have to worry about any external addresses for this
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# create a list of either "ip@port" or ""
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# the ""s then get filtered out by filter_empty
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exporters = {
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dns = (
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lib.attrsets.mapAttrsToList (
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key: value:
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if value.config.services.skynet.dns.server.enable
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then "${value.config.deployment.targetHost}:${toString value.config.services.prometheus.exporters.bind.port}"
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else ""
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)
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nodes
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);
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node = lib.attrsets.mapAttrsToList (key: value: "${value.config.deployment.targetHost}:${toString value.config.services.prometheus.exporters.node.port}") nodes;
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};
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# clears any invalid entries
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filter_empty = inputs: (builtins.filter (value: value != "") inputs);
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in {
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imports = [];
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options.services.skynet."${name}" = {
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server = {
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enable = mkEnableOption "Prometheus Server";
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port = mkOption {
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type = types.port;
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default = 9001;
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};
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};
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external = {
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node = mkOption {
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type = types.listOf types.str;
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default = [];
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description = ''
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To add other nodes outside of nix, specify ip and port that server should listen to here
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'';
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};
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};
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ports = {
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node = mkOption {
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type = types.port;
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default = 9100;
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};
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};
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};
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config = mkMerge [
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{
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services.prometheus.exporters.node = {
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enable = true;
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port = cfg.ports.node;
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openFirewall = true;
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# most collectors are on by default see https://github.com/prometheus/node_exporter for more options
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enabledCollectors = ["systemd" "processes"];
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};
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}
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(mkIf cfg.server.enable {
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services.prometheus = {
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enable = true;
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port = cfg.server.port;
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scrapeConfigs = [
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{
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job_name = "node_exporter";
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static_configs = [
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{
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targets = filter_empty (exporters.node ++ cfg.external.node);
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}
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];
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}
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{
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job_name = "bind";
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static_configs = [
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{
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targets = filter_empty exporters.dns;
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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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];
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}
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