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|
{ lib, config, pkgs, utils, ... }:
with lib;
let
cfg = config.services.prometheus.exporters.lvm;
in {
options = {
services.prometheus.exporters.lvm = {
enable = mkEnableOption "Prometheus LVM exporter";
listenAddress = mkOption {
type = types.nullOr types.str;
default = "127.0.0.1";
};
port = mkOption {
type = types.port;
default = 9845;
};
openFirewall = mkOption {
type = types.bool;
default = false;
description = ''
Open port in firewall for incoming connections.
'';
};
firewallFilter = mkOption {
type = types.nullOr types.str;
default = null;
example = literalExpression ''
"-i eth0 -p tcp -m tcp --dport ${toString cfg.port}"
'';
description = ''
Specify a filter for iptables to use when
{option}`services.prometheus.exporters.lvm.openFirewall`
is true. It is used as `ip46tables -I nixos-fw firewallFilter -j nixos-fw-accept`.
'';
};
};
};
config = mkIf cfg.enable {
systemd.services."prometheus-lvm-exporter" = {
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
serviceConfig = {
ExecStart = "${pkgs.prometheus-lvm-exporter}/bin/prometheus-lvm-exporter ${utils.escapeSystemdExecArgs [
"--web.systemd-socket"
]}";
Restart = "always";
Sockets = "prometheus-lvm-exporter.socket";
};
};
systemd.sockets."prometheus-lvm-exporter" = {
socketConfig.ListenStream = "${optionalString (cfg.listenAddress != null) (cfg.listenAddress + ":")}${toString cfg.port}";
};
};
}
|
