Found Nginx 1.19.0 stopped but no idea what happened

[Evald80]

Hi,

The issue appeared again. I checked the memory and it is the same as
previously. Something(within the nginx process) is eating the whole memory
on the server or the nginx itself(who knows).

In order to troubleshoot. The strategy will be to remove all the  modules
and leave only ModSec and wait for at least one week. I saw that in less
than a week, usually it appears...ModSec module is built by me and it is the
latest version on git.

#load_module modules/ngx_http_brotli_filter_module.so;
#load_module modules/ngx_http_brotli_static_module.so;
load_module modules/ngx_http_modsecurity_module.so;
#load_module modules/ngx_http_geoip2_module.so;


[root at web ~]# nginx -V
nginx version: nginx/1.19.1
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC)
built with OpenSSL 1.0.2k-fips  26 Jan 2017
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx
--modules-path=/usr/lib64/nginx/modules --conf-path=/etc/nginx/nginx.conf
--error-log-path=/var/log/nginx/error.log
--http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid
--lock-path=/var/run/nginx.lock
--http-client-body-temp-path=/var/cache/nginx/client_temp
--http-proxy-temp-path=/var/cache/nginx/proxy_temp
--http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp
--http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp
--http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx
--with-compat --with-file-aio --with-threads --with-http_addition_module
--with-http_auth_request_module --with-http_dav_module
--with-http_flv_module --with-http_gunzip_module
--with-http_gzip_static_module --with-http_mp4_module
--with-http_random_index_module --with-http_realip_module
--with-http_secure_link_module --with-http_slice_module
--with-http_ssl_module --with-http_stub_status_module --with-http_sub_module
--with-http_v2_module --with-mail --with-mail_ssl_module --with-stream
--with-stream_realip_module --with-stream_ssl_module
--with-stream_ssl_preread_module --with-cc-opt='-O2 -g -pipe -Wall
-Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong
--param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -fPIC'
--with-ld-opt='-Wl,-z,relro -Wl,-z,now -pie'
[root at web ~]#

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,288511,288672#msg-288672