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{ config, pkgs, lib, ... }:
with lib;
let
cfg = config.services.netdata;
configFile = pkgs.writeText "netdata.conf" cfg.configText;
defaultUser = "netdata";
in {
options = {
services.netdata = {
enable = mkOption {
default = false;
type = types.bool;
description = "Whether to enable netdata monitoring.";
};
user = mkOption {
type = types.str;
default = "netdata";
description = "User account under which netdata runs.";
};
group = mkOption {
type = types.str;
default = "netdata";
description = "Group under which netdata runs.";
};
configText = mkOption {
type = types.lines;
default = "";
description = "netdata.conf configuration.";
example = ''
[global]
debug log = syslog
access log = syslog
error log = syslog
'';
};
};
};
config = mkIf cfg.enable {
systemd.services.netdata = {
description = "Real time performance monitoring";
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
preStart = concatStringsSep "\n" (map (dir: ''
mkdir -vp ${dir}
chmod 750 ${dir}
chown -R ${cfg.user}:${cfg.group} ${dir}
'') [ "/var/cache/netdata"
"/var/log/netdata"
"/var/lib/netdata" ]);
serviceConfig = {
User = cfg.user;
Group = cfg.group;
PermissionsStartOnly = true;
ExecStart = "${pkgs.netdata}/bin/netdata -D -c ${configFile}";
TimeoutStopSec = 60;
};
};
users.extraUsers = optional (cfg.user == defaultUser) {
name = defaultUser;
};
users.extraGroups = optional (cfg.group == defaultUser) {
name = defaultUser;
};
};
}
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