From a8db537be5b157c0afe3a71d632724e1ceef3d4f Mon Sep 17 00:00:00 2001 From: makefu Date: Thu, 13 Dec 2018 01:32:12 +0100 Subject: ma netdata: init --- makefu/2configs/stats/client.nix | 7 ++ makefu/2configs/stats/netdata-server.nix | 17 ++++ makefu/3modules/netdata.nix | 150 +++++++++++++++++++++++++++++++ 3 files changed, 174 insertions(+) create mode 100644 makefu/2configs/stats/client.nix create mode 100644 makefu/2configs/stats/netdata-server.nix create mode 100644 makefu/3modules/netdata.nix (limited to 'makefu') diff --git a/makefu/2configs/stats/client.nix b/makefu/2configs/stats/client.nix new file mode 100644 index 000000000..b88515a35 --- /dev/null +++ b/makefu/2configs/stats/client.nix @@ -0,0 +1,7 @@ +{ + makefu.netdata = { + enable = true; + stream.role = "slave"; + # stream.destination = "netdata.makefu.r"; + }; +} diff --git a/makefu/2configs/stats/netdata-server.nix b/makefu/2configs/stats/netdata-server.nix new file mode 100644 index 000000000..5fec3583c --- /dev/null +++ b/makefu/2configs/stats/netdata-server.nix @@ -0,0 +1,17 @@ +{ + makefu.netdata = { + enable = true; + stream.role = "master"; + }; + + services.nginx = { + virtualHosts."netdata.euer.krebsco.de" = { + addSSL = true; + enableACME = true; + locations."/".proxyPass = "http://localhost:19999"; + }; + virtualHosts."netdata.makefu.r" = { + locations."/".proxyPass = "http://localhost:19999"; + }; + }; +} diff --git a/makefu/3modules/netdata.nix b/makefu/3modules/netdata.nix new file mode 100644 index 000000000..3ed33643c --- /dev/null +++ b/makefu/3modules/netdata.nix @@ -0,0 +1,150 @@ +{ config, lib, pkgs, ... }: + +# fork of https://github.com/Mic92/dotfiles/blob/master/nixos/vms/modules/netdata.nix +with lib; +let + cfg = config.makefu.netdata; +in +{ + options.makefu.netdata = { + enable = mkEnableOption "netdata"; + + # TODO only apikey from file, set remote host manually + stream.file = mkOption { + type = types.str; + default = toString ; + description = "path to stream data file"; + }; + stream.role = mkOption { + type = types.enum [ "master" "slave" ]; + default = "slave"; + description = "Wether to stream data"; + }; + + httpcheck.checks = mkOption { + type = types.attrsOf (types.submodule ({ + options = { + url = mkOption { + type = types.str; + example = "https://thalheim.io"; + description = "Url to check"; + }; + regex = mkOption { + type = types.nullOr types.str; + default = null; + example = "My homepage"; + description = "Regex that is matched against the returned content"; + }; + statusAccepted = mkOption { + type = types.listOf types.int; + default = [ 200 ]; + example = [ 401 ]; + description = "Expected http status code"; + }; + }; + })); + default = {}; + description = '' + httpcheck plugin: https://github.com/netdata/netdata/blob/master/collectors/python.d.plugin/httpcheck/httpcheck.conf + ''; + }; + + portcheck.checks = mkOption { + type = types.attrsOf (types.submodule ({ + options = { + host = mkOption { + type = types.str; + default = "127.0.0.1"; + description = "Dns name/IP to check"; + }; + port = mkOption { + type = types.int; + description = "Tcp port number"; + }; + }; + })); + default = {}; + description = '' + portcheck plugin: https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/portcheck + ''; + }; + }; + config = mkIf cfg.enable { + systemd.services.netdata = { + requires = [ "secret.service" ]; + after = [ "secret.service" ]; + }; + krebs.secret.files.netdata-stream = { + path = "/run/secret/netdata-stream.conf"; + owner.name = "netdata"; + source-path = cfg.stream.file; + }; + environment.etc."netdata/stream.conf".source = "/run/secret/netdata-stream.conf"; + + services.netdata = { + enable = true; + config = { + global = { + "bind to" = "0.0.0.0:19999 [::]:19999"; + "error log" = "stderr"; + "update every" = "5"; + }; + health.enable = if cfg.stream.role == "master" then "yes" else "no"; + }; + }; + services.netdata.python.extraPackages = ps: [ + ps.psycopg2 ps.docker ps.dnspython + ]; + + makefu.netdata.portcheck.checks.openssh.port = (lib.head config.services.openssh.ports); + + networking.firewall.allowedTCPPorts = [ 19999 ]; + + environment.etc."netdata/python.d/httpcheck.conf".text = '' + update_every: 30 + ${lib.concatStringsSep "\n" (mapAttrsToList (site: options: + '' + ${site}: + url: '${options.url}' + ${optionalString (options.regex != null) "regex: '${options.regex}'"} + status_accepted: [ ${lib.concatStringsSep " " (map toString options.statusAccepted) } ] + '') cfg.httpcheck.checks) + } + ''; + + environment.etc."netdata/python.d/portcheck.conf".text = '' + ${lib.concatStringsSep "\n" (mapAttrsToList (service: options: + '' + ${service}: + host: '${options.host}' + port: ${toString options.port} + '') cfg.portcheck.checks) + } + ''; + systemd.services.netdata.restartTriggers = [ + config.environment.etc."netdata/python.d/httpcheck.conf".source + config.environment.etc."netdata/python.d/portcheck.conf".source + config.environment.etc."netdata/stream.conf".source + ]; + + environment.etc."netdata/health.d/httpcheck.conf".text = '' + # taken from the original but warn only if a request is at least 300ms slow + template: web_service_slow + families: * + on: httpcheck.responsetime + lookup: average -3m unaligned of time + units: ms + every: 10s + warn: ($this > ($1h_web_service_response_time * 4) && $this > 1000) + crit: ($this > ($1h_web_service_response_time * 6) && $this > 1000) + info: average response time over the last 3 minutes, compared to the average over the last hour + delay: down 5m multiplier 1.5 max 1h + options: no-clear-notification + to: webmaster + ''; + + }; + # TODO: notification + # environment.etc."netdata/health_alarm_notify.conf".source = "/run/keys/netdata-pushover.conf"; + +} -- cgit v1.2.3