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171 lines
4.3 KiB
Nix
171 lines
4.3 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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cfg = config.services.zabbixAgent;
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inherit (lib) mkDefault mkEnableOption mkIf mkMerge mkOption;
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inherit (lib) attrValues concatMapStringsSep literalExample optionalString types;
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inherit (lib.generators) toKeyValue;
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user = "zabbix-agent";
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group = "zabbix-agent";
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moduleEnv = pkgs.symlinkJoin {
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name = "zabbix-agent-module-env";
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paths = attrValues cfg.modules;
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};
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configFile = pkgs.writeText "zabbix_agent.conf" (toKeyValue { listsAsDuplicateKeys = true; } cfg.settings);
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in
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{
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imports = [
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(lib.mkRemovedOptionModule [ "services" "zabbixAgent" "extraConfig" ] "Use services.zabbixAgent.settings instead.")
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];
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# interface
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options = {
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services.zabbixAgent = {
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enable = mkEnableOption "the Zabbix Agent";
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package = mkOption {
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type = types.package;
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default = pkgs.zabbix.agent;
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defaultText = "pkgs.zabbix.agent";
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description = "The Zabbix package to use.";
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};
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extraPackages = mkOption {
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type = types.listOf types.package;
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default = with pkgs; [ nettools ];
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defaultText = "[ nettools ]";
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example = "[ nettools mysql ]";
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description = ''
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Packages to be added to the Zabbix <envar>PATH</envar>.
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Typically used to add executables for scripts, but can be anything.
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'';
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};
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modules = mkOption {
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type = types.attrsOf types.package;
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description = "A set of modules to load.";
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default = {};
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example = literalExample ''
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{
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"dummy.so" = pkgs.stdenv.mkDerivation {
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name = "zabbix-dummy-module-''${cfg.package.version}";
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src = cfg.package.src;
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buildInputs = [ cfg.package ];
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sourceRoot = "zabbix-''${cfg.package.version}/src/modules/dummy";
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installPhase = '''
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mkdir -p $out/lib
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cp dummy.so $out/lib/
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''';
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};
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}
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'';
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};
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server = mkOption {
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type = types.str;
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description = ''
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The IP address or hostname of the Zabbix server to connect to.
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'';
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};
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listen = {
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ip = mkOption {
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type = types.str;
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default = "0.0.0.0";
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description = ''
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List of comma delimited IP addresses that the agent should listen on.
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'';
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};
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port = mkOption {
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type = types.port;
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default = 10050;
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description = ''
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Agent will listen on this port for connections from the server.
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'';
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};
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};
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openFirewall = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Open ports in the firewall for the Zabbix Agent.
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'';
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};
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settings = mkOption {
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type = with types; attrsOf (oneOf [ int str (listOf str) ]);
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default = {};
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description = ''
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Zabbix Agent configuration. Refer to
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<link xlink:href="https://www.zabbix.com/documentation/current/manual/appendix/config/zabbix_agentd"/>
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for details on supported values.
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'';
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example = {
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Hostname = "example.org";
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DebugLevel = 4;
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};
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};
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};
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};
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# implementation
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config = mkIf cfg.enable {
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services.zabbixAgent.settings = mkMerge [
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{
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LogType = "console";
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Server = cfg.server;
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ListenIP = cfg.listen.ip;
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ListenPort = cfg.listen.port;
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LoadModule = builtins.attrNames cfg.modules;
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}
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(mkIf (cfg.modules != {}) { LoadModulePath = "${moduleEnv}/lib"; })
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];
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networking.firewall = mkIf cfg.openFirewall {
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allowedTCPPorts = [ cfg.listen.port ];
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};
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users.users.${user} = {
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description = "Zabbix Agent daemon user";
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inherit group;
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isSystemUser = true;
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};
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users.groups.${group} = { };
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systemd.services.zabbix-agent = {
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description = "Zabbix Agent";
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wantedBy = [ "multi-user.target" ];
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path = [ "/run/wrappers" ] ++ cfg.extraPackages;
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serviceConfig = {
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ExecStart = "@${cfg.package}/sbin/zabbix_agentd zabbix_agentd -f --config ${configFile}";
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Restart = "always";
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RestartSec = 2;
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User = user;
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Group = group;
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PrivateTmp = true;
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};
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};
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};
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}
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