74 lines
1.8 KiB
Nix
74 lines
1.8 KiB
Nix
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{ config, lib, pkgs, ...}:
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let
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cfg = config.services.hadoop;
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hadoopConf = import ./conf.nix { hadoop = cfg; pkgs = pkgs; };
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in
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with lib;
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{
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options.services.hadoop.hdfs = {
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namenode.enabled = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to run the Hadoop YARN NameNode
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'';
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};
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datanode.enabled = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to run the Hadoop YARN DataNode
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'';
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};
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};
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config = mkMerge [
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(mkIf cfg.hdfs.namenode.enabled {
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systemd.services."hdfs-namenode" = {
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description = "Hadoop HDFS NameNode";
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wantedBy = [ "multi-user.target" ];
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environment = {
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HADOOP_HOME = "${cfg.package}";
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};
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preStart = ''
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${cfg.package}/bin/hdfs --config ${hadoopConf} namenode -format -nonInteractive || true
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'';
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serviceConfig = {
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User = "hdfs";
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SyslogIdentifier = "hdfs-namenode";
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ExecStart = "${cfg.package}/bin/hdfs --config ${hadoopConf} namenode";
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};
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};
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})
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(mkIf cfg.hdfs.datanode.enabled {
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systemd.services."hdfs-datanode" = {
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description = "Hadoop HDFS DataNode";
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wantedBy = [ "multi-user.target" ];
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environment = {
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HADOOP_HOME = "${cfg.package}";
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};
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serviceConfig = {
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User = "hdfs";
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SyslogIdentifier = "hdfs-datanode";
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ExecStart = "${cfg.package}/bin/hdfs --config ${hadoopConf} datanode";
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};
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};
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})
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(mkIf (
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cfg.hdfs.namenode.enabled || cfg.hdfs.datanode.enabled
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) {
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users.extraUsers.hdfs = {
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description = "Hadoop HDFS user";
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group = "hadoop";
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uid = config.ids.uids.hdfs;
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};
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})
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];
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}
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