Hello,

I'm running a unraid server and keep seeing a intermittent failure where it locks up and i can't access it over the network or through direct connection.
When it's in this state i'm unable to fix it without a hard reboot.

I'm pretty stumped as to the cause of this issue, any feedback or direction would be greatly appreciated.

I attached the remote syslog file and a diagnostic files for reference.

Thanks!

2025-12-26-crash_copy.log razerback-diagnostics-20251226-0754.zip

2025-12-26 07:42:06 - Received from 192.168.50.186: <28>Dec 26 07:41:51 Razerback php-fpm[6066]: [WARNING] [pool www] child 2134032 exited on signal 9 (SIGKILL) after 52.147651 seconds from start

2025-12-26 07:42:54 - Received from 192.168.50.186: <28>Dec 26 07:42:33 Razerback php-fpm[6066]: [WARNING] [pool www] child 2134056 exited on signal 9 (SIGKILL) after 54.979548 seconds from start

2025-12-26 07:43:20 - Received from 192.168.50.186: <28>Dec 26 07:43:04 Razerback php-fpm[6066]: [WARNING] [pool www] child 2134071 exited on signal 9 (SIGKILL) after 55.980329 seconds from start

In my experience, these errors can be the result of the server being close to exhausting the memory, and the syslog also has OOM errors logged, GUI can become extremely slow, like 1 minute to open the dashboard, try limiting the memory for VMs/docker services, or adding a little more RAM.

It could also be one or more containers hogging the CPU, try pinning only some cores to them, and leave cores 0/1 available for Unraid.

Also, recommend trying a couple of other things, go to Settings - Global share settings and set the Number of fuse File Descriptors to the max, and enable this:

https://docs.unraid.net/unraid-os/release-notes/7.0.0/#excessive-flash-drive-activity-slows-the-system-down

thank you i'll give this a try