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