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nixpkgs/nixos/modules/services/monitoring/snmpd.nix
Silvan Mosberger 4f0dadbf38 treewide: format all inactive Nix files
After final improvements to the official formatter implementation,
this commit now performs the first treewide reformat of Nix files using it.
This is part of the implementation of RFC 166.

Only "inactive" files are reformatted, meaning only files that
aren't being touched by any PR with activity in the past 2 months.
This is to avoid conflicts for PRs that might soon be merged.
Later we can do a full treewide reformat to get the rest,
which should not cause as many conflicts.

A CI check has already been running for some time to ensure that new and
already-formatted files are formatted, so the files being reformatted here
should also stay formatted.

This commit was automatically created and can be verified using

    nix-build a08b3a4d19.tar.gz \
      --argstr baseRev b32a094368
    result/bin/apply-formatting $NIXPKGS_PATH
2024-12-10 20:26:33 +01:00

92 lines
2.2 KiB
Nix

{
pkgs,
config,
lib,
...
}:
let
cfg = config.services.snmpd;
configFile =
if cfg.configText != "" then
pkgs.writeText "snmpd.cfg" ''
${cfg.configText}
''
else
null;
in
{
options.services.snmpd = {
enable = lib.mkEnableOption "snmpd";
package = lib.mkPackageOption pkgs "net-snmp" { };
listenAddress = lib.mkOption {
type = lib.types.str;
default = "0.0.0.0";
description = ''
The address to listen on for SNMP and AgentX messages.
'';
example = "127.0.0.1";
};
port = lib.mkOption {
type = lib.types.port;
default = 161;
description = ''
The port to listen on for SNMP and AgentX messages.
'';
};
openFirewall = lib.mkOption {
type = lib.types.bool;
default = false;
description = ''
Open port in firewall for snmpd.
'';
};
configText = lib.mkOption {
type = lib.types.lines;
default = "";
description = ''
The contents of the snmpd.conf. If the {option}`configFile` option
is set, this value will be ignored.
Note that the contents of this option will be added to the Nix
store as world-readable plain text, {option}`configFile` can be used in
addition to a secret management tool to protect sensitive data.
'';
};
configFile = lib.mkOption {
type = lib.types.path;
default = configFile;
defaultText = lib.literalMD "The value of {option}`configText`.";
description = ''
Path to the snmpd.conf file. By default, if {option}`configText` is set,
a config file will be automatically generated.
'';
};
};
config = lib.mkIf cfg.enable {
systemd.services."snmpd" = {
description = "Simple Network Management Protocol (SNMP) daemon.";
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Type = "simple";
ExecStart = "${lib.getExe' cfg.package "snmpd"} -f -Lo -c ${cfg.configFile} ${cfg.listenAddress}:${toString cfg.port}";
};
};
networking.firewall.allowedUDPPorts = lib.mkIf cfg.openFirewall [
cfg.port
];
};
meta.maintainers = [ lib.maintainers.eliandoran ];
}