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117 lines
3 KiB
Nix
117 lines
3 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.ntopng;
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redisCfg = config.services.redis;
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configFile = if cfg.configText != "" then
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pkgs.writeText "ntopng.conf" ''
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${cfg.configText}
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''
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else
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pkgs.writeText "ntopng.conf" ''
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${concatStringsSep " " (map (e: "--interface=" + e) cfg.interfaces)}
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--http-port=${toString cfg.http-port}
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--redis=localhost:${toString redisCfg.port}
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${cfg.extraConfig}
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'';
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in
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{
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options = {
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services.ntopng = {
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enable = mkOption {
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default = false;
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type = types.bool;
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description = ''
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Enable ntopng, a high-speed web-based traffic analysis and flow
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collection tool.
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With the default configuration, ntopng monitors all network
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interfaces and displays its findings at http://localhost:${toString
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cfg.http-port}. Default username and password is admin/admin.
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See the ntopng(8) manual page and http://www.ntop.org/products/ntop/
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for more info.
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Note that enabling ntopng will also enable redis (key-value
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database server) for persistent data storage.
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'';
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};
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interfaces = mkOption {
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default = [ "any" ];
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example = [ "eth0" "wlan0" ];
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type = types.listOf types.str;
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description = ''
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List of interfaces to monitor. Use "any" to monitor all interfaces.
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'';
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};
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http-port = mkOption {
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default = 3000;
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type = types.int;
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description = ''
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Sets the HTTP port of the embedded web server.
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'';
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};
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configText = mkOption {
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default = "";
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example = ''
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--interface=any
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--http-port=3000
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--disable-login
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'';
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type = types.lines;
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description = ''
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Overridable configuration file contents to use for ntopng. By
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default, use the contents automatically generated by NixOS.
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'';
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};
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extraConfig = mkOption {
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default = "";
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type = types.lines;
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description = ''
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Configuration lines that will be appended to the generated ntopng
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configuration file. Note that this mechanism does not work when the
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manual <option>configText</option> option is used.
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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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# ntopng uses redis for data storage
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services.redis.enable = true;
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# nice to have manual page and ntopng command in PATH
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environment.systemPackages = [ pkgs.ntopng ];
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systemd.services.ntopng = {
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description = "Ntopng Network Monitor";
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requires = [ "redis.service" ];
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after = [ "network.target" "redis.service" ];
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wantedBy = [ "multi-user.target" ];
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preStart = "mkdir -p /var/lib/ntopng/";
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serviceConfig.ExecStart = "${pkgs.ntopng}/bin/ntopng ${configFile}";
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unitConfig.Documentation = "man:ntopng(8)";
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};
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# ntopng drops priveleges to user "nobody" and that user is already defined
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# in users-groups.nix.
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};
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}
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