Please help,  I have Unraid version 6.8.3 and I noticed that it is crashing after 3-4 hours that is running. I have attached diagnostics file, any assistance is highly appreciated. 

nas-diagnostics-20200308-2132.zip

Make sure that you are not doing any overclocking.

 

See here for getting the syslog at the time of the crash:

 

         https://forums.unraid.net/topic/46802-faq-for-unraid-v6/page/2/?tab=comments#comment-781601

 

Since the crash occurs within a few hours, I would suggest logging to the Flash Drive.  Attach the syslog to your next post.

The system crashed and I have attached the syslog and the screenshot from remote syslog server.

 

syslog

I have attached the flash drive log after the system is running for 2 hours and crashed. 

syslog

15 minutes ago, wheelbase said:

I have attached the flash drive log after the system is running for 2 hours and crashed. 

The syslog you attached to this post ended 10 minutes after the server restarted.  But there are a lot of the following entries in the syslog.  @bonienl, could you have a look at this:

 

[v8.1908.0 try https://www.rsyslog.com/e/2007 ]
Mar  9 22:08:07 Nas rsyslogd: action 'action-3-builtin:omfwd' resumed (module 'builtin:omfwd') [v8.1908.0 try https://www.rsyslog.com/e/2359 ]
Mar  9 22:08:07 Nas rsyslogd: omfwd/udp: socket 2: sendto() error: Network is unreachable [v8.1908.0 try https://www.rsyslog.com/e/2354 ]
Mar  9 22:08:07 Nas rsyslogd: omfwd: socket 2: error 101 sending via udp: Network is unreachable [v8.1908.0 try https://www.rsyslog.com/e/2354 ]
Mar  9 22:08:07 Nas rsyslogd: action 'action-3-builtin:omfwd' suspended (module 'builtin:omfwd'), retry 0. There should be messages before this one giving the reason for suspension.

@wheelbase, it may be that you have a networking issue.  Have you added any new plugins or Dockers that require network access lately? 

I have installed "Fix common problems" plugin and then I connected to a syslog server.

 

I have installed Windows 10 in a USB stick and executed the application I'm using in Unraid VM and it's running smoothly for more than 1 day with no crash. Having said that, this is clearly an Unraid issue.