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7d988867ff
This is a useful utility for monitoring network performance over time using a combination of MTR and Prometheus. Also adding a service definition. Signed-off-by: Jakub Sokołowski <jakub@status.im>
88 lines
2.4 KiB
Nix
88 lines
2.4 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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inherit (lib)
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maintainers types mkEnableOption mkOption mkIf
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literalExpression escapeShellArg escapeShellArgs;
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cfg = config.services.mtr-exporter;
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in {
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options = {
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services = {
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mtr-exporter = {
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enable = mkEnableOption "a Prometheus exporter for MTR";
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target = mkOption {
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type = types.str;
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example = "example.org";
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description = "Target to check using MTR.";
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};
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interval = mkOption {
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type = types.int;
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default = 60;
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description = "Interval between MTR checks in seconds.";
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};
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port = mkOption {
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type = types.port;
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default = 8080;
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description = "Listen port for MTR exporter.";
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};
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address = mkOption {
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type = types.str;
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default = "127.0.0.1";
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description = "Listen address for MTR exporter.";
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};
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mtrFlags = mkOption {
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type = with types; listOf str;
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default = [];
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example = ["-G1"];
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description = "Additional flags to pass to MTR.";
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};
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};
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};
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};
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config = mkIf cfg.enable {
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systemd.services.mtr-exporter = {
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script = ''
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exec ${pkgs.mtr-exporter}/bin/mtr-exporter \
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-mtr ${pkgs.mtr}/bin/mtr \
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-schedule '@every ${toString cfg.interval}s' \
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-bind ${escapeShellArg cfg.address}:${toString cfg.port} \
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-- \
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${escapeShellArgs (cfg.mtrFlags ++ [ cfg.target ])}
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'';
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wantedBy = [ "multi-user.target" ];
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requires = [ "network.target" ];
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after = [ "network.target" ];
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serviceConfig = {
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Restart = "on-failure";
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# Hardening
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CapabilityBoundingSet = [ "" ];
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DynamicUser = true;
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LockPersonality = true;
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ProcSubset = "pid";
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PrivateDevices = true;
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PrivateUsers = true;
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PrivateTmp = true;
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ProtectClock = true;
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ProtectControlGroups = true;
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ProtectHome = true;
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ProtectHostname = true;
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ProtectKernelLogs = true;
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ProtectKernelModules = true;
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ProtectKernelTunables = true;
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ProtectProc = "invisible";
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ProtectSystem = "strict";
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RestrictNamespaces = true;
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RestrictRealtime = true;
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};
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};
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};
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meta.maintainers = with maintainers; [ jakubgs ];
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}
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