93 lines
		
	
	
		
			2.1 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			93 lines
		
	
	
		
			2.1 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
{ config, lib, pkgs, ... }:
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with lib;
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let
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  cfg = config.services.mesos.slave;
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in {
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  options.services.mesos = {
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    slave = {
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      enable = mkOption {
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        description = "Whether to enable the Mesos Slave.";
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        default = false;
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        type = types.uniq types.bool;
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      };
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      port = mkOption {
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        description = "Mesos Slave port";
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        default = 5051;
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        type = types.int;
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      };
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      master = mkOption {
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        description = ''
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          May be one of:
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            zk://host1:port1,host2:port2,.../path
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            zk://username:password@host1:port1,host2:port2,.../path
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        '';
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        type = types.str;
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      };
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      withHadoop = mkOption {
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	description = "Add the HADOOP_HOME to the slave.";
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	default = false;
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	type = types.bool;
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      };
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      workDir = mkOption {
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        description = "The Mesos work directory.";
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        default = "/var/lib/mesos/slave";
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        type = types.str;
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      };
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      extraCmdLineOptions = mkOption {
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        description = ''
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	  Extra command line options for Mesos Slave.
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	  See https://mesos.apache.org/documentation/latest/configuration/
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	'';
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        default = [ "" ];
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        type = types.listOf types.string;
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        example = [ "--gc_delay=3days" ];
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      };
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      logLevel = mkOption {
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        description = ''
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          The logging level used. Possible values:
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            'INFO', 'WARNING', 'ERROR'
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        '';
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        default = "INFO";
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        type = types.str;
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      };
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    };
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  };
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  config = mkIf cfg.enable {
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    systemd.services.mesos-slave = {
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      description = "Mesos Slave";
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      wantedBy = [ "multi-user.target" ];
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      after = [ "network-interfaces.target" ];
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      serviceConfig = {
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	ExecStart = ''
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	  ${pkgs.mesos}/bin/mesos-slave \
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	    --port=${toString cfg.port} \
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	    --master=${cfg.master} \
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	    ${optionalString cfg.withHadoop "--hadoop-home=${pkgs.hadoop}"} \
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	    --work_dir=${cfg.workDir} \
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	    --logging_level=${cfg.logLevel} \
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	    ${toString cfg.extraCmdLineOptions}
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	'';
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	PermissionsStartOnly = true;
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      };
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      preStart = ''
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	mkdir -m 0700 -p ${cfg.workDir}
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      '';
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    };
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  };
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} |