Found Nginx 1.19.0 stopped but no idea what happened

[Evald80]

hi,

it happened again and i see that nginx is eating all the memory of the
server.
Somebody could help me how to troubleshoot? Mos probably there is a memory
leak but don't know if on nginx or ModSec.

There are 10websites on this server and they are not popular at all. Some
clicks a day, so no superbusy website.

thank you

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,288511,288522#msg-288522