nixpkgs/nixos/modules/services/logging/syslogd.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

125 lines
3.0 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.syslogd;
syslogConf = pkgs.writeText "syslog.conf" ''
${if (cfg.tty != "") then "kern.warning;*.err;authpriv.none /dev/${cfg.tty}" else ""}
${cfg.defaultConfig}
${cfg.extraConfig}
'';
defaultConf = ''
# Send emergency messages to all users.
*.emerg *
# "local1" is used for dhcpd messages.
local1.* -/var/log/dhcpd
mail.* -/var/log/mail
*.=warning;*.=err -/var/log/warn
*.crit /var/log/warn
*.*;mail.none;local1.none -/var/log/messages
'';
in
{
###### interface
options = {
services.syslogd = {
enable = mkOption {
type = types.bool;
default = false;
description = ''
Whether to enable syslogd. Note that systemd also logs
syslog messages, so you normally don't need to run syslogd.
'';
};
tty = mkOption {
type = types.str;
default = "tty10";
description = ''
The tty device on which syslogd will print important log
messages. Leave this option blank to disable tty logging.
'';
};
defaultConfig = mkOption {
type = types.lines;
default = defaultConf;
description = ''
The default <filename>syslog.conf</filename> file configures a
fairly standard setup of log files, which can be extended by
means of <varname>extraConfig</varname>.
'';
};
enableNetworkInput = mkOption {
type = types.bool;
default = false;
description = ''
Accept logging through UDP. Option -r of syslogd(8).
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
example = "news.* -/var/log/news";
description = ''
Additional text appended to <filename>syslog.conf</filename>,
i.e. the contents of <varname>defaultConfig</varname>.
'';
};
extraParams = mkOption {
type = types.listOf types.string;
default = [ ];
example = [ "-m 0" ];
description = ''
Additional parameters passed to <command>syslogd</command>.
'';
};
};
};
###### implementation
config = mkIf cfg.enable {
environment.systemPackages = [ pkgs.sysklogd ];
services.syslogd.extraParams = optional cfg.enableNetworkInput "-r";
# FIXME: restarting syslog seems to break journal logging.
systemd.services.syslog =
{ description = "Syslog Daemon";
requires = [ "syslog.socket" ];
wantedBy = [ "multi-user.target" ];
serviceConfig =
{ ExecStart = "${pkgs.sysklogd}/sbin/syslogd ${toString cfg.extraParams} -f ${syslogConf} -n";
# Prevent syslogd output looping back through journald.
StandardOutput = "null";
};
};
};
}