29027fd1e1
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.
105 lines
2.4 KiB
Nix
105 lines
2.4 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.rsyslogd;
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syslogConf = pkgs.writeText "syslog.conf" ''
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$ModLoad imuxsock
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$SystemLogSocketName /run/systemd/journal/syslog
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$WorkDirectory /var/spool/rsyslog
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${cfg.defaultConfig}
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${cfg.extraConfig}
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'';
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defaultConf = ''
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# "local1" is used for dhcpd messages.
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local1.* -/var/log/dhcpd
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mail.* -/var/log/mail
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*.=warning;*.=err -/var/log/warn
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*.crit /var/log/warn
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*.*;mail.none;local1.none -/var/log/messages
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'';
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in
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{
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###### interface
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options = {
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services.rsyslogd = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to enable syslogd. Note that systemd also logs
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syslog messages, so you normally don't need to run syslogd.
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'';
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};
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defaultConfig = mkOption {
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type = types.string;
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default = defaultConf;
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description = ''
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The default <filename>syslog.conf</filename> file configures a
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fairly standard setup of log files, which can be extended by
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means of <varname>extraConfig</varname>.
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'';
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};
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extraConfig = mkOption {
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type = types.string;
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default = "";
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example = "news.* -/var/log/news";
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description = ''
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Additional text appended to <filename>syslog.conf</filename>,
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i.e. the contents of <varname>defaultConfig</varname>.
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'';
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};
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extraParams = mkOption {
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type = types.listOf types.string;
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default = [ ];
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example = [ "-m 0" ];
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description = ''
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Additional parameters passed to <command>rsyslogd</command>.
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'';
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};
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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environment.systemPackages = [ pkgs.rsyslog ];
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systemd.services.syslog =
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{ description = "Syslog Daemon";
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requires = [ "syslog.socket" ];
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wantedBy = [ "multi-user.target" ];
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serviceConfig =
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{ ExecStart = "${pkgs.rsyslog}/sbin/rsyslogd ${toString cfg.extraParams} -f ${syslogConf} -n";
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ExecStartPre = "${pkgs.coreutils}/bin/mkdir -p /var/spool/rsyslog";
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# Prevent syslogd output looping back through journald.
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StandardOutput = "null";
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};
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};
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};
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}
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