Hey all,
Just wanted to chime in with a temporary workaround until Unraid fixes nginx.
In the nginx conf file (/etc/nginx/nginx.conf) add the following:
nchan_shared_memory_size 512M;
just before the line
include /etc/nginx/conf.d/servers.conf;
and that should increase the nchan memory limit from default of 128M to 512M.
Restart nginx for the parameter to take effect, then you can clean up /var/log/nginx/* and /var/log/syslog.*
Also, if this continues to cause problems, there's also an nchan parameter called 'nchan_message_timeout' which defaults to 1h. You can reduce this value to a shorter interval to clear/expire the messages in the queue faster. Be warned that messing with that setting may result in missed updates and could have other consequences.
Good luck.