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|
{ config, lib, pkgs, ...}:
let
cfg = config.services.hadoop;
hadoopConf = import ./conf.nix { hadoop = cfg; pkgs = pkgs; };
in
with lib;
{
options.services.hadoop.yarn = {
resourcemanager.enabled = mkOption {
type = types.bool;
default = false;
description = ''
Whether to run the Hadoop YARN ResourceManager
'';
};
nodemanager.enabled = mkOption {
type = types.bool;
default = false;
description = ''
Whether to run the Hadoop YARN NodeManager
'';
};
};
config = mkMerge [
(mkIf (
cfg.yarn.resourcemanager.enabled || cfg.yarn.nodemanager.enabled
) {
users.users.yarn = {
description = "Hadoop YARN user";
group = "hadoop";
uid = config.ids.uids.yarn;
};
})
(mkIf cfg.yarn.resourcemanager.enabled {
systemd.services."yarn-resourcemanager" = {
description = "Hadoop YARN ResourceManager";
wantedBy = [ "multi-user.target" ];
environment = {
HADOOP_HOME = "${cfg.package}";
};
serviceConfig = {
User = "yarn";
SyslogIdentifier = "yarn-resourcemanager";
ExecStart = "${cfg.package}/bin/yarn --config ${hadoopConf} " +
" resourcemanager";
};
};
})
(mkIf cfg.yarn.nodemanager.enabled {
systemd.services."yarn-nodemanager" = {
description = "Hadoop YARN NodeManager";
wantedBy = [ "multi-user.target" ];
environment = {
HADOOP_HOME = "${cfg.package}";
};
serviceConfig = {
User = "yarn";
SyslogIdentifier = "yarn-nodemanager";
ExecStart = "${cfg.package}/bin/yarn --config ${hadoopConf} " +
" nodemanager";
};
};
})
];
}
|