Hi, first time post here. I’m still getting the hang of linux and nixos so I really appreciate any help. Feel like I’m driving myself mad with this issue that feels like it should be fairly simple.
I’m attempting to set up an nfs share on a locally hosted nixos machine running 25.11, and I am unable to mount the share. All of the following were run on the server itself, but the same issues persist on the client machine I plan to use to access it. The crux of the issue is:
phoenix@phoenixmedia:~/ > sudo mount localhost:/ /mnt/test
mount.nfs: Connection refused for localhost:/ on /mnt/test
relevant configuration:
fileSystems.“/export/phoenixmedia” = {
device = “/mnt/hdd/data/phoenixmedia”;
options = [“bind”];
};
services.nfs = {
server = {
enable = true;
createMountPoints = true;
hostName = “phoenixmedia”;
exports = ‘’
/export *(rw,fsid=0,no_subtree_check)
/export/phoenixmedia *(rw,nohide,fsid=0,insecure,no_subtree_check)
‘’;
lockdPort = 4001;
mountdPort = 4002;
statdPort = 4000;
extraNfsdConfig = ‘’‘’;
};
I have the firewall turned off for testing purposes. But opened all the relevant ports anyway.
networking.firewall.enable = false;
networking.firewall.allowedTCPPorts = [ 111 2049 4000 4001 4002 20048 ];
networking.firewall.allowedUDPPorts = [ 111 2049 4000 4001 4002 20048 ];
exportfs output
phoenix@phoenixmedia:~/ > sudo exportfs
[sudo] password for phoenix:
/export <world>
/export/phoenixmedia
<world>
According to the logs, nfs appears to startup without issue:
Jan 23 15:45:56 phoenixmedia systemd[1]: Starting NFSv4 ID-name mapping service...
Jan 23 15:45:56 phoenixmedia systemd[1]: Starting NFS Mount Daemon...
Jan 23 15:45:56 phoenixmedia systemd[1]: Starting NFS status monitor for NFSv2/3 locking....
Jan 23 15:45:56 phoenixmedia rpc.idmapd[1043]: Setting log level to 0
Jan 23 15:45:56 phoenixmedia rpc.idmapd[1043]: libnfsidmap: Unable to determine the NFSv4 domain; Using 'localdomain' as the NFSv4 domain which means UIDs will be mapped to the 'Nobody-User' user defined in /etc/idmapd.conf
Jan 23 15:45:56 phoenixmedia rpc.statd[1044]: Version 2.7.1 starting
Jan 23 15:45:56 phoenixmedia rpc.statd[1044]: Flags: TI-RPC
Jan 23 15:45:56 phoenixmedia systemd[1]: Started NFSv4 ID-name mapping service.
Jan 23 15:45:56 phoenixmedia rpc.mountd[1049]: Version 2.7.1 starting
Jan 23 15:45:56 phoenixmedia rpc.statd[1044]: Running as root. chown /var/lib/nfs to choose different user
Jan 23 15:45:56 phoenixmedia systemd[1]: Started NFS status monitor for NFSv2/3 locking..
Jan 23 15:45:56 phoenixmedia systemd[1]: Started NFS Mount Daemon.
Jan 23 15:45:56 phoenixmedia systemd[1]: Starting NFS server and services...
Jan 23 15:45:57 phoenixmedia kernel: NFSD: Using nfsdcld client tracking operations.
Jan 23 15:45:57 phoenixmedia kernel: NFSD: no clients to reclaim, skipping NFSv4 grace period (net f0000000)
Jan 23 15:45:57 phoenixmedia systemd[1]: Finished NFS server and services.
Jan 23 15:45:57 phoenixmedia systemd[1]: Starting Notify NFS peers of a restart...
Jan 23 15:45:57 phoenixmedia sm-notify[1072]: Version 2.7.1 starting
Jan 23 15:45:57 phoenixmedia systemd[1]: Started Notify NFS peers of a restart.
There is this this series of rpc logs that could be relevant?
Jan 23 15:45:47 phoenixmedia systemd[1]: Mounted RPC Pipe File System.
Jan 23 15:45:47 phoenixmedia systemd[1]: Reached target rpc_pipefs.target.
Jan 23 15:45:47 phoenixmedia systemd[1]: Starting NFSv4 Client Tracking Daemon...
Jan 23 15:45:47 phoenixmedia systemd[1]: RPC security service for NFS client and server was skipped because of an unmet condition check (ConditionPathExists=/etc/krb5.keytab).
Jan 23 15:45:47 phoenixmedia systemd[1]: Reached target NFS client services.
Jan 23 15:45:47 phoenixmedia systemd[1]: Reached target Preparation for Remote File Systems.
Jan 23 15:45:47 phoenixmedia systemd[1]: Reached target Remote File Systems.
Jan 23 15:45:47 phoenixmedia (rpcbind)[616]: rpcbind.service: Referenced but unset environment variable evaluates to an empty string: RPCBIND_OPTIONS
Jan 23 15:45:48 phoenixmedia systemd[1]: Started NFSv4 Client Tracking Daemon.
Jan 23 15:45:48 phoenixmedia systemd[1]: Finished Record System Boot/Shutdown in UTMP.
Jan 23 15:45:48 phoenixmedia systemd[1]: Started RPC Bind.
File permissions:
phoenix@phoenixmedia:/export/phoenixmedia/ > ls -la /export/
total 16
drwxr-xr-x 3 nobody nogroup 4096 Jan 1 16:00 .
drwxr-xr-x 20 root root 4096 Jan 1 16:00 ..
drwxrws---+ 5 nobody nogroup 4096 Jun 28 2025 phoenixmedia
I stumbled across this pr but havent been able to say for certain if this has anything to do with the problem. Despite all my investigation I still havent even been able to narrow it down to a client or a server problem, but my hunch tells me its the latter.
tyia