This is the new v6 version of datadog-agent. The old v5 module is kept as dd-agent.wip/yesman
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{ config, lib, pkgs, ... }: |
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with lib; |
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let |
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cfg = config.services.datadog-agent; |
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ddConf = { |
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dd_url = "https://app.datadoghq.com"; |
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skip_ssl_validation = "no"; |
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api_key = ""; |
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confd_path = "/etc/datadog-agent/conf.d"; |
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additional_checksd = "/etc/datadog-agent/checks.d"; |
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use_dogstatsd = "yes"; |
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} |
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// optionalAttrs (cfg.logLevel != null) { log_level = cfg.logLevel; } |
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// optionalAttrs (cfg.hostname != null) { inherit (cfg) hostname; } |
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// optionalAttrs (cfg.tags != null ) { tags = concatStringsSep ", " cfg.tags; } |
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// cfg.extraConfig; |
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makeConfigDir = entries: mapAttrsToList (name: conf: { |
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source = pkgs.writeText (baseNameOf name) (builtins.toJSON conf); |
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target = "datadog-agent/" + name; |
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}) (filterAttrs (name: conf: conf != null) entries); |
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etcfiles = makeConfigDir |
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{ "datadog.yaml" = ddConf; |
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"conf.d/disk.yaml" = cfg.diskConfig; |
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"conf.d/network.yaml" = cfg.networkConfig; |
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"conf.d/postgres.d/conf.yaml" = cfg.postgresqlConfig; |
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"conf.d/nginx.d/conf.yaml" = cfg.nginxConfig; |
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"conf.d/mongo.d/conf.yaml" = cfg.mongoConfig; |
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"conf.d/process.yaml" = cfg.processConfig; |
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"conf.d/jmx.yaml" = cfg.jmxConfig; |
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}; |
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in { |
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options.services.datadog-agent = { |
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enable = mkOption { |
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description = '' |
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Whether to enable the datadog-agent v6 monitoring service |
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''; |
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default = false; |
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type = types.bool; |
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}; |
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package = mkOption { |
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default = pkgs.datadog-agent; |
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defaultText = "pkgs.datadog-agent"; |
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description = '' |
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Which DataDog v6 agent package to use. |
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Override the <literal>pythonPackages</literal> argument |
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of this derivation to include more checks. |
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''; |
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type = types.package; |
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}; |
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apiKeyFile = mkOption { |
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description = '' |
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Path to a file containing the Datadog API key to associate the |
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agent with your account. |
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''; |
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example = "/run/keys/datadog_api_key"; |
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type = types.path; |
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}; |
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tags = mkOption { |
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description = "The tags to mark this Datadog agent"; |
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example = [ "test" "service" ]; |
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default = null; |
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type = types.nullOr (types.listOf types.str); |
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}; |
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hostname = mkOption { |
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description = "The hostname to show in the Datadog dashboard (optional)"; |
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default = null; |
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example = "mymachine.mydomain"; |
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type = types.uniq (types.nullOr types.string); |
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}; |
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logLevel = mkOption { |
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description = "Logging verbosity."; |
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default = null; |
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type = types.nullOr (types.enum ["DEBUG" "INFO" "WARN" "ERROR"]); |
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}; |
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extraConfig = mkOption { |
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default = {}; |
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type = types.attrs; |
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description = '' |
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Extra configuration options that will be merged into the |
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main config file <filename>datadog.yaml</filename>. |
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''; |
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}; |
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diskConfig = mkOption { |
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description = "Disk check config"; |
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type = types.attrs; |
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default = { |
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init_config = {}; |
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instances = [ { use-mount = "no"; } ]; |
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}; |
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}; |
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networkConfig = mkOption { |
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description = "Network check config"; |
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type = types.attrs; |
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default = { |
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init_config = {}; |
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# Network check only supports one configured instance |
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instances = [ { collect_connection_state = false; |
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excluded_interfaces = [ "lo" "lo0" ]; } ]; |
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}; |
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}; |
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postgresqlConfig = mkOption { |
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description = "Datadog PostgreSQL integration configuration"; |
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default = null; |
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type = types.nullOr types.attrs; |
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}; |
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nginxConfig = mkOption { |
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description = "Datadog nginx integration configuration"; |
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default = null; |
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type = types.nullOr types.attrs; |
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}; |
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mongoConfig = mkOption { |
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description = "MongoDB integration configuration"; |
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default = null; |
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type = types.nullOr types.attrs; |
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}; |
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jmxConfig = mkOption { |
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description = "JMX integration configuration"; |
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default = null; |
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type = types.nullOr types.attrs; |
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}; |
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processConfig = mkOption { |
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description = '' |
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Process integration configuration |
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See http://docs.datadoghq.com/integrations/process/ |
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''; |
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default = null; |
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type = types.nullOr types.attrs; |
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}; |
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}; |
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config = mkIf cfg.enable { |
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environment.systemPackages = [ cfg.package pkgs.sysstat pkgs.procps ]; |
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users.extraUsers.datadog = { |
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description = "Datadog Agent User"; |
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uid = config.ids.uids.datadog; |
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group = "datadog"; |
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home = "/var/log/datadog/"; |
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createHome = true; |
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}; |
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users.extraGroups.datadog.gid = config.ids.gids.datadog; |
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systemd.services = let |
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makeService = attrs: recursiveUpdate { |
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path = [ cfg.package pkgs.python pkgs.sysstat pkgs.procps ]; |
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wantedBy = [ "multi-user.target" ]; |
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serviceConfig = { |
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User = "datadog"; |
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Group = "datadog"; |
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Restart = "always"; |
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RestartSec = 2; |
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PrivateTmp = true; |
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}; |
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restartTriggers = [ cfg.package ] ++ map (etc: etc.source) etcfiles; |
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} attrs; |
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in { |
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datadog-agent = makeService { |
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description = "Datadog agent monitor"; |
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preStart = '' |
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chown -R datadog: /etc/datadog-agent |
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rm -f /etc/datadog-agent/auth_token |
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''; |
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script = '' |
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export DD_API_KEY=$(head -n1 ${cfg.apiKeyFile}) |
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exec ${cfg.package}/bin/agent start -c /etc/datadog-agent/datadog.yaml |
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''; |
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serviceConfig.PermissionsStartOnly = true; |
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}; |
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dd-jmxfetch = lib.mkIf (cfg.jmxConfig != null) (makeService { |
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description = "Datadog JMX Fetcher"; |
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path = [ cfg.package pkgs.python pkgs.sysstat pkgs.procps pkgs.jdk ]; |
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serviceConfig.ExecStart = "${cfg.package}/bin/dd-jmxfetch"; |
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}); |
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}; |
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environment.etc = etcfiles; |
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}; |
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} |
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