diff options
Diffstat (limited to 'nixos/modules/services/monitoring/dd-agent/dd-agent.nix')
| -rw-r--r-- | nixos/modules/services/monitoring/dd-agent/dd-agent.nix | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/nixos/modules/services/monitoring/dd-agent/dd-agent.nix b/nixos/modules/services/monitoring/dd-agent/dd-agent.nix new file mode 100644 index 00000000000..a290dae8d4b --- /dev/null +++ b/nixos/modules/services/monitoring/dd-agent/dd-agent.nix @@ -0,0 +1,236 @@ +{ config, lib, pkgs, ... }: + +with lib; + +let + cfg = config.services.dd-agent; + + ddConf = pkgs.writeText "datadog.conf" '' + [Main] + dd_url: https://app.datadoghq.com + skip_ssl_validation: no + api_key: ${cfg.api_key} + ${optionalString (cfg.hostname != null) "hostname: ${cfg.hostname}"} + + collector_log_file: /var/log/datadog/collector.log + forwarder_log_file: /var/log/datadog/forwarder.log + dogstatsd_log_file: /var/log/datadog/dogstatsd.log + pup_log_file: /var/log/datadog/pup.log + + # proxy_host: my-proxy.com + # proxy_port: 3128 + # proxy_user: user + # proxy_password: password + + # tags: mytag0, mytag1 + ${optionalString (cfg.tags != null ) "tags: ${concatStringsSep ", " cfg.tags }"} + + # collect_ec2_tags: no + # recent_point_threshold: 30 + # use_mount: no + # listen_port: 17123 + # graphite_listen_port: 17124 + # non_local_traffic: no + # use_curl_http_client: False + # bind_host: localhost + + # use_pup: no + # pup_port: 17125 + # pup_interface: localhost + # pup_url: http://localhost:17125 + + # dogstatsd_port : 8125 + # dogstatsd_interval : 10 + # dogstatsd_normalize : yes + # statsd_forward_host: address_of_own_statsd_server + # statsd_forward_port: 8125 + + # device_blacklist_re: .*\/dev\/mapper\/lxc-box.* + + # ganglia_host: localhost + # ganglia_port: 8651 + ''; + + diskConfig = pkgs.writeText "disk.yaml" '' + init_config: + + instances: + - use_mount: no + ''; + + networkConfig = pkgs.writeText "network.yaml" '' + init_config: + + instances: + # Network check only supports one configured instance + - collect_connection_state: false + excluded_interfaces: + - lo + - lo0 + ''; + + postgresqlConfig = pkgs.writeText "postgres.yaml" cfg.postgresqlConfig; + nginxConfig = pkgs.writeText "nginx.yaml" cfg.nginxConfig; + mongoConfig = pkgs.writeText "mongo.yaml" cfg.mongoConfig; + jmxConfig = pkgs.writeText "jmx.yaml" cfg.jmxConfig; + processConfig = pkgs.writeText "process.yaml" cfg.processConfig; + + etcfiles = + let + defaultConfd = import ./dd-agent-defaults.nix; + in + listToAttrs (map (f: { + name = "dd-agent/conf.d/${f}"; + value.source = "${pkgs.dd-agent}/agent/conf.d-system/${f}"; + }) defaultConfd) // + { + "dd-agent/datadog.conf".source = ddConf; + "dd-agent/conf.d/disk.yaml".source = diskConfig; + "dd-agent/conf.d/network.yaml".source = networkConfig; + } // + (optionalAttrs (cfg.postgresqlConfig != null) + { + "dd-agent/conf.d/postgres.yaml".source = postgresqlConfig; + }) // + (optionalAttrs (cfg.nginxConfig != null) + { + "dd-agent/conf.d/nginx.yaml".source = nginxConfig; + }) // + (optionalAttrs (cfg.mongoConfig != null) + { + "dd-agent/conf.d/mongo.yaml".source = mongoConfig; + }) // + (optionalAttrs (cfg.processConfig != null) + { + "dd-agent/conf.d/process.yaml".source = processConfig; + }) // + (optionalAttrs (cfg.jmxConfig != null) + { + "dd-agent/conf.d/jmx.yaml".source = jmxConfig; + }); + +in { + options.services.dd-agent = { + enable = mkOption { + description = '' + Whether to enable the dd-agent v5 monitoring service. + For datadog-agent v6, see <option>services.datadog-agent.enable</option>. + ''; + default = false; + type = types.bool; + }; + + api_key = mkOption { + description = '' + The Datadog API key to associate the agent with your account. + + Warning: this key is stored in cleartext within the world-readable + Nix store! Consider using the new v6 + <option>services.datadog-agent</option> module instead. + ''; + example = "ae0aa6a8f08efa988ba0a17578f009ab"; + type = types.str; + }; + + tags = mkOption { + description = "The tags to mark this Datadog agent"; + example = [ "test" "service" ]; + default = null; + type = types.nullOr (types.listOf types.str); + }; + + hostname = mkOption { + description = "The hostname to show in the Datadog dashboard (optional)"; + default = null; + example = "mymachine.mydomain"; + type = types.nullOr types.str; + }; + + postgresqlConfig = mkOption { + description = "Datadog PostgreSQL integration configuration"; + default = null; + type = types.nullOr types.lines; + }; + + nginxConfig = mkOption { + description = "Datadog nginx integration configuration"; + default = null; + type = types.nullOr types.lines; + }; + + mongoConfig = mkOption { + description = "MongoDB integration configuration"; + default = null; + type = types.nullOr types.lines; + }; + + jmxConfig = mkOption { + description = "JMX integration configuration"; + default = null; + type = types.nullOr types.lines; + }; + + processConfig = mkOption { + description = '' + Process integration configuration + See <link xlink:href="https://docs.datadoghq.com/integrations/process/"/> + ''; + default = null; + type = types.nullOr types.lines; + }; + + }; + + config = mkIf cfg.enable { + environment.systemPackages = [ pkgs.dd-agent pkgs.sysstat pkgs.procps ]; + + users.users.datadog = { + description = "Datadog Agent User"; + uid = config.ids.uids.datadog; + group = "datadog"; + home = "/var/log/datadog/"; + createHome = true; + }; + + users.groups.datadog.gid = config.ids.gids.datadog; + + systemd.services = let + makeService = attrs: recursiveUpdate { + path = [ pkgs.dd-agent pkgs.python pkgs.sysstat pkgs.procps pkgs.gohai ]; + wantedBy = [ "multi-user.target" ]; + serviceConfig = { + User = "datadog"; + Group = "datadog"; + Restart = "always"; + RestartSec = 2; + PrivateTmp = true; + }; + restartTriggers = [ pkgs.dd-agent ddConf diskConfig networkConfig postgresqlConfig nginxConfig mongoConfig jmxConfig processConfig ]; + } attrs; + in { + dd-agent = makeService { + description = "Datadog agent monitor"; + serviceConfig.ExecStart = "${pkgs.dd-agent}/bin/dd-agent foreground"; + }; + + dogstatsd = makeService { + description = "Datadog statsd"; + environment.TMPDIR = "/run/dogstatsd"; + serviceConfig = { + ExecStart = "${pkgs.dd-agent}/bin/dogstatsd start"; + Type = "forking"; + PIDFile = "/run/dogstatsd/dogstatsd.pid"; + RuntimeDirectory = "dogstatsd"; + }; + }; + + dd-jmxfetch = lib.mkIf (cfg.jmxConfig != null) { + description = "Datadog JMX Fetcher"; + path = [ pkgs.dd-agent pkgs.python pkgs.sysstat pkgs.procps pkgs.jdk ]; + serviceConfig.ExecStart = "${pkgs.dd-agent}/bin/dd-jmxfetch"; + }; + }; + + environment.etc = etcfiles; + }; +} |