nixpkgs/nixos/modules/tasks/filesystems/nfs.nix
2021-10-04 12:47:20 +02:00

136 lines
3.1 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
inInitrd = any (fs: fs == "nfs") config.boot.initrd.supportedFilesystems;
nfsStateDir = "/var/lib/nfs";
rpcMountpoint = "${nfsStateDir}/rpc_pipefs";
format = pkgs.formats.ini {};
idmapdConfFile = format.generate "idmapd.conf" cfg.idmapd.settings;
nfsConfFile = pkgs.writeText "nfs.conf" cfg.extraConfig;
requestKeyConfFile = pkgs.writeText "request-key.conf" ''
create id_resolver * * ${pkgs.nfs-utils}/bin/nfsidmap -t 600 %k %d
'';
cfg = config.services.nfs;
in
{
###### interface
options = {
services.nfs = {
idmapd.settings = mkOption {
type = format.type;
default = {};
description = ''
libnfsidmap configuration. Refer to
<link xlink:href="https://linux.die.net/man/5/idmapd.conf"/>
for details.
'';
example = literalExpression ''
{
Translation = {
GSS-Methods = "static,nsswitch";
};
Static = {
"root/hostname.domain.com@REALM.COM" = "root";
};
}
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = ''
Extra nfs-utils configuration.
'';
};
};
};
###### implementation
config = mkIf (any (fs: fs == "nfs" || fs == "nfs4") config.boot.supportedFilesystems) {
services.rpcbind.enable = true;
services.nfs.idmapd.settings = {
General = mkMerge [
{ Pipefs-Directory = rpcMountpoint; }
(mkIf (config.networking.domain != null) { Domain = config.networking.domain; })
];
Mapping = {
Nobody-User = "nobody";
Nobody-Group = "nogroup";
};
Translation = {
Method = "nsswitch";
};
};
system.fsPackages = [ pkgs.nfs-utils ];
boot.initrd.kernelModules = mkIf inInitrd [ "nfs" ];
systemd.packages = [ pkgs.nfs-utils ];
environment.systemPackages = [ pkgs.keyutils ];
environment.etc = {
"idmapd.conf".source = idmapdConfFile;
"nfs.conf".source = nfsConfFile;
"request-key.conf".source = requestKeyConfFile;
};
systemd.services.nfs-blkmap =
{ restartTriggers = [ nfsConfFile ];
};
systemd.targets.nfs-client =
{ wantedBy = [ "multi-user.target" "remote-fs.target" ];
};
systemd.services.nfs-idmapd =
{ restartTriggers = [ idmapdConfFile ];
};
systemd.services.nfs-mountd =
{ restartTriggers = [ nfsConfFile ];
enable = mkDefault false;
};
systemd.services.nfs-server =
{ restartTriggers = [ nfsConfFile ];
enable = mkDefault false;
};
systemd.services.auth-rpcgss-module =
{
unitConfig.ConditionPathExists = [ "" "/etc/krb5.keytab" ];
};
systemd.services.rpc-gssd =
{ restartTriggers = [ nfsConfFile ];
unitConfig.ConditionPathExists = [ "" "/etc/krb5.keytab" ];
};
systemd.services.rpc-statd =
{ restartTriggers = [ nfsConfFile ];
preStart =
''
mkdir -p /var/lib/nfs/{sm,sm.bak}
'';
};
};
}