I am having an odd problem with my secondary bare metal NAS. I am running TrueNAS Core TrueNAS-13.0-U6.7 on a Cisco UCS 240SX-M5 (Intel(R) Xeon(R) Gold 6244 CPU @ 3.60GHz). I only use this one when I am patching the primary or backing things up. When I booted it today, the rsync service would not start. I got this message:
Jul 8 10:48:49 freenas 1 2025-07-08T10:48:49.174164-04:00 freenas.oau.org rsyncd 2449 - - unable to bind any inbound sockets on port 873
Jul 8 10:48:49 freenas 1 2025-07-08T10:48:49.174188-04:00 freenas.oau.org rsyncd 2449 - - rsync error: error in socket IO (code 10) at socket.c(545) [Receiver=3.2.7]
After doing some digging, I found that mountd was listening on port 873. I was able to stop the NFS service, and then rsync started and is working. I was also able to start the NFS service, but I did see this message in the log:
Jul 8 10:56:08 freenas nfsd: can’t register svc name
I know I have not changed the port bindings for NFS/mountd, so I have no idea why this changed. I haven’t run this in a while, so I unfortunately have no idea when it started failing. I looked on the primary node which is that same kind of chassis and same version of TrueNAS Core, and mountd is not listening on 873. What the heck?