nixpkgs/nixos/modules/services/logging/rsyslogd.nix
Eelco Dolstra 29027fd1e1 Rewrite ‘with pkgs.lib’ -> ‘with lib’
Using pkgs.lib on the spine of module evaluation is problematic
because the pkgs argument depends on the result of module
evaluation. To prevent an infinite recursion, pkgs and some of the
modules are evaluated twice, which is inefficient. Using ‘with lib’
prevents this problem.
2014-04-14 16:26:48 +02:00

106 lines
2.4 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.rsyslogd;
syslogConf = pkgs.writeText "syslog.conf" ''
$ModLoad imuxsock
$SystemLogSocketName /run/systemd/journal/syslog
$WorkDirectory /var/spool/rsyslog
${cfg.defaultConfig}
${cfg.extraConfig}
'';
defaultConf = ''
# "local1" is used for dhcpd messages.
local1.* -/var/log/dhcpd
mail.* -/var/log/mail
*.=warning;*.=err -/var/log/warn
*.crit /var/log/warn
*.*;mail.none;local1.none -/var/log/messages
'';
in
{
###### interface
options = {
services.rsyslogd = {
enable = mkOption {
type = types.bool;
default = false;
description = ''
Whether to enable syslogd. Note that systemd also logs
syslog messages, so you normally don't need to run syslogd.
'';
};
defaultConfig = mkOption {
type = types.string;
default = defaultConf;
description = ''
The default <filename>syslog.conf</filename> file configures a
fairly standard setup of log files, which can be extended by
means of <varname>extraConfig</varname>.
'';
};
extraConfig = mkOption {
type = types.string;
default = "";
example = "news.* -/var/log/news";
description = ''
Additional text appended to <filename>syslog.conf</filename>,
i.e. the contents of <varname>defaultConfig</varname>.
'';
};
extraParams = mkOption {
type = types.listOf types.string;
default = [ ];
example = [ "-m 0" ];
description = ''
Additional parameters passed to <command>rsyslogd</command>.
'';
};
};
};
###### implementation
config = mkIf cfg.enable {
environment.systemPackages = [ pkgs.rsyslog ];
systemd.services.syslog =
{ description = "Syslog Daemon";
requires = [ "syslog.socket" ];
wantedBy = [ "multi-user.target" ];
serviceConfig =
{ ExecStart = "${pkgs.rsyslog}/sbin/rsyslogd ${toString cfg.extraParams} -f ${syslogConf} -n";
ExecStartPre = "${pkgs.coreutils}/bin/mkdir -p /var/spool/rsyslog";
# Prevent syslogd output looping back through journald.
StandardOutput = "null";
};
};
};
}