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316 lines
9.8 KiB
Nix
316 lines
9.8 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.smokeping;
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smokepingHome = "/var/lib/smokeping";
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smokepingPidDir = "/run";
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configFile =
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if cfg.config == null
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then
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''
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*** General ***
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cgiurl = ${cfg.cgiUrl}
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contact = ${cfg.ownerEmail}
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datadir = ${smokepingHome}/data
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imgcache = ${smokepingHome}/cache
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imgurl = ${cfg.imgUrl}
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linkstyle = ${cfg.linkStyle}
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${lib.optionalString (cfg.mailHost != "") "mailhost = ${cfg.mailHost}"}
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owner = ${cfg.owner}
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pagedir = ${smokepingHome}/cache
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piddir = ${smokepingPidDir}
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${lib.optionalString (cfg.sendmail != null) "sendmail = ${cfg.sendmail}"}
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smokemail = ${cfg.smokeMailTemplate}
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*** Presentation ***
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template = ${cfg.presentationTemplate}
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${cfg.presentationConfig}
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*** Alerts ***
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${cfg.alertConfig}
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*** Database ***
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${cfg.databaseConfig}
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*** Probes ***
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${cfg.probeConfig}
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*** Targets ***
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${cfg.targetConfig}
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${cfg.extraConfig}
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''
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else
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cfg.config;
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configPath = pkgs.writeText "smokeping.conf" configFile;
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cgiHome = pkgs.writeScript "smokeping.fcgi" ''
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#!${pkgs.bash}/bin/bash
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${cfg.package}/bin/smokeping_cgi ${configPath}
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'';
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in
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{
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options = {
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services.smokeping = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = "Enable the smokeping service";
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};
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alertConfig = mkOption {
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type = types.string;
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default = ''
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to = root@localhost
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from = smokeping@localhost
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'';
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example = literalExample ''
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to = alertee@address.somewhere
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from = smokealert@company.xy
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+someloss
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type = loss
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# in percent
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pattern = >0%,*12*,>0%,*12*,>0%
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comment = loss 3 times in a row;
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'';
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description = "Configuration for alerts.";
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};
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cgiUrl = mkOption {
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type = types.string;
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default = "http://${cfg.hostName}:${builtins.toString cfg.port}/smokeping.cgi";
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example = "https://somewhere.example.com/smokeping.cgi";
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description = "URL to the smokeping cgi.";
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};
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config = mkOption {
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type = types.nullOr types.string;
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default = null;
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description = "Full smokeping config supplied by the user. Overrides " +
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"and replaces any other configuration supplied.";
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};
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databaseConfig = mkOption {
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type = types.string;
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default = ''
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step = 300
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pings = 20
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# consfn mrhb steps total
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AVERAGE 0.5 1 1008
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AVERAGE 0.5 12 4320
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MIN 0.5 12 4320
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MAX 0.5 12 4320
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AVERAGE 0.5 144 720
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MAX 0.5 144 720
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MIN 0.5 144 720
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'';
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example = literalExample ''
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# near constant pings.
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step = 30
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pings = 20
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# consfn mrhb steps total
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AVERAGE 0.5 1 10080
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AVERAGE 0.5 12 43200
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MIN 0.5 12 43200
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MAX 0.5 12 43200
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AVERAGE 0.5 144 7200
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MAX 0.5 144 7200
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MIN 0.5 144 7200
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'';
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description = ''Configure the ping frequency and retention of the rrd files.
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Once set, changing the interval will require deletion or migration of all
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the collected data.'';
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};
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extraConfig = mkOption {
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type = types.lines;
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default = "";
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description = "Any additional customization not already included.";
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};
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hostName = mkOption {
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type = types.string;
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default = config.networking.hostName;
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example = "somewhere.example.com";
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description = "DNS name for the urls generated in the cgi.";
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};
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imgUrl = mkOption {
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type = types.string;
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default = "http://${cfg.hostName}:${builtins.toString cfg.port}/cache";
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example = "https://somewhere.example.com/cache";
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description = "Base url for images generated in the cgi.";
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};
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linkStyle = mkOption {
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type = types.enum ["original" "absolute" "relative"];
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default = "relative";
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example = "absolute";
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description = "DNS name for the urls generated in the cgi.";
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};
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mailHost = mkOption {
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type = types.string;
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default = "";
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example = "localhost";
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description = "Use this SMTP server to send alerts";
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};
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owner = mkOption {
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type = types.string;
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default = "nobody";
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example = "Joe Admin";
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description = "Real name of the owner of the instance";
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};
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ownerEmail = mkOption {
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type = types.string;
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default = "no-reply@${cfg.hostName}";
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example = "no-reply@yourdomain.com";
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description = "Email contact for owner";
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};
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package = mkOption {
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type = types.package;
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default = pkgs.smokeping;
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defaultText = "pkgs.smokeping";
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description = "Specify a custom smokeping package";
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};
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port = mkOption {
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type = types.int;
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default = 8081;
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example = 8081;
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description = "TCP port to use for the web server.";
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};
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presentationConfig = mkOption {
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type = types.string;
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default = ''
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+ charts
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menu = Charts
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title = The most interesting destinations
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++ stddev
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sorter = StdDev(entries=>4)
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title = Top Standard Deviation
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menu = Std Deviation
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format = Standard Deviation %f
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++ max
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sorter = Max(entries=>5)
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title = Top Max Roundtrip Time
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menu = by Max
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format = Max Roundtrip Time %f seconds
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++ loss
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sorter = Loss(entries=>5)
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title = Top Packet Loss
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menu = Loss
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format = Packets Lost %f
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++ median
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sorter = Median(entries=>5)
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title = Top Median Roundtrip Time
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menu = by Median
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format = Median RTT %f seconds
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+ overview
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width = 600
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height = 50
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range = 10h
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+ detail
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width = 600
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height = 200
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unison_tolerance = 2
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"Last 3 Hours" 3h
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"Last 30 Hours" 30h
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"Last 10 Days" 10d
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"Last 360 Days" 360d
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'';
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description = "presentation graph style";
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};
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presentationTemplate = mkOption {
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type = types.string;
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default = "${pkgs.smokeping}/etc/basepage.html.dist";
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description = "Default page layout for the web UI.";
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};
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probeConfig = mkOption {
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type = types.string;
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default = ''
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+ FPing
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binary = ${config.security.wrapperDir}/fping
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'';
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description = "Probe configuration";
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};
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sendmail = mkOption {
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type = types.nullOr types.path;
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default = null;
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example = "/run/wrappers/bin/sendmail";
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description = "Use this sendmail compatible script to deliver alerts";
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};
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smokeMailTemplate = mkOption {
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type = types.string;
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default = "${cfg.package}/etc/smokemail.dist";
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description = "Specify the smokemail template for alerts.";
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};
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targetConfig = mkOption {
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type = types.string;
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default = ''
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probe = FPing
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menu = Top
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title = Network Latency Grapher
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remark = Welcome to the SmokePing website of xxx Company. \
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Here you will learn all about the latency of our network.
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+ Local
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menu = Local
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title = Local Network
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++ LocalMachine
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menu = Local Machine
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title = This host
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host = localhost
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'';
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description = "Target configuration";
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};
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user = mkOption {
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type = types.string;
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default = "smokeping";
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description = "User that runs smokeping and (optionally) thttpd";
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};
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webService = mkOption {
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type = types.bool;
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default = true;
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description = "Enable a smokeping web interface";
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};
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};
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};
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config = mkIf cfg.enable {
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assertions = [
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{
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assertion = !(cfg.sendmail != null && cfg.mailHost != "");
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message = "services.smokeping: sendmail and Mailhost cannot both be enabled.";
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}
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];
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security.wrappers = {
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fping.source = "${pkgs.fping}/bin/fping";
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"fping6".source = "${pkgs.fping}/bin/fping6";
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};
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environment.systemPackages = [ pkgs.fping ];
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users.users = singleton {
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name = cfg.user;
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isNormalUser = false;
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isSystemUser = true;
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uid = config.ids.uids.smokeping;
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description = "smokeping daemon user";
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home = smokepingHome;
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createHome = true;
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};
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systemd.services.smokeping = {
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wantedBy = [ "multi-user.target"];
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serviceConfig = {
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User = cfg.user;
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Restart = "on-failure";
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};
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preStart = ''
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mkdir -m 0755 -p ${smokepingHome}/cache ${smokepingHome}/data
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rm -f ${smokepingHome}/cropper
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ln -s ${cfg.package}/htdocs/cropper ${smokepingHome}/cropper
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cp ${cgiHome} ${smokepingHome}/smokeping.fcgi
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${cfg.package}/bin/smokeping --check --config=${configPath}
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${cfg.package}/bin/smokeping --static --config=${configPath}
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'';
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script = ''${cfg.package}/bin/smokeping --config=${configPath} --nodaemon'';
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};
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systemd.services.thttpd = mkIf cfg.webService {
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wantedBy = [ "multi-user.target"];
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requires = [ "smokeping.service"];
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partOf = [ "smokeping.service"];
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path = with pkgs; [ bash rrdtool smokeping thttpd ];
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script = ''thttpd -u ${cfg.user} -c "**.fcgi" -d ${smokepingHome} -p ${builtins.toString cfg.port} -D -nos'';
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serviceConfig.Restart = "always";
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};
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};
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}
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