Perl module logs located in wrong file

[Flinou]

Hello !

Here is the output of nginx -V : 


nginx version: nginx/1.19.2
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-11) (GCC)
built with OpenSSL 1.1.1g  21 Apr 2020
TLS SNI support enabled
configure arguments: --prefix=/opt/nginx/1.19.2 --with-cc-opt='-I
/logiciels/openssl/1.1.1/include/ -fstack-protector-strong' --with-cc='gcc
-L/logiciels/openssl/1.1.1/lib64 -Wl,-rpath,/logiciels/openssl/1.1.1/lib64'
--with-compat --with-file-aio --with-http_flv_module
--with-http_stub_status_module --with-stream_realip_module
--with-stream_ssl_module --with-stream_ssl_preread_module
--with-http_ssl_module --with-pcre --with-debug --with-http_realip_module
--with-http_addition_module --with-http_mp4_module --with-http_dav_module
--with-http_random_index_module --with-http_degradation_module
--with-http_perl_module
--with-perl_modules_path=/opt/nginx/1.19.2/modules/perl/ --with-mail
--with-mail_ssl_module --with-stream_ssl_module
--with-http_secure_link_module --with-http_sub_module
--with-http_auth_request_module --with-ipv6 --with-http_v2_module
--with-stream --with-threads --with-http_gunzip_module
--with-http_gzip_static_module --with-http_stub_status_module
--with-http_slice_module --add-dynamic-module=./ngx_devel_kit-0.3.1
--add-dynamic-module=./lua-nginx-module-0.10.15
--add-dynamic-module=./headers-more-nginx-module-0.33
--add-module=./ngx_http_auth_ldap_module
--with-ld-opt=-Wl,-rpath,/opt/luajit/lib

Here is my nginx.conf : 


user w3user webgrp;
worker_processes  1;

load_module ./modules/ngx_http_headers_more_filter_module.so;
error_log   /var/projects/instance/nginx_1.19/logs/error.log debug;

pid        /var/projects/instance/nginx_1.19/run/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;
    perl_modules /appli/projects/instance/nginx_1.19/conf/perl/modules/;
    perl_modules ./modules/perl/;
    perl_require test.pm;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request"
'
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/projects/instance/nginx_1.19/logs/access.log;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;
proxy_cache_path   //var/projects/instance/nginx_1.19/cache/ levels=1:2
keys_zone=instance_cache:10m max_size=10g inactive=60m use_temp_path=off;
include /appli/projects/instance/nginx_1.19/conf//instance.conf;

}


I am witnessing a weird behaviour. 
All logs are well written down in 
/var/projects/instance/nginx_1.19/logs/error.log (as provided in nginx.conf)
excepting logs from perl_module which are written in
/opt/nginx/1.19.2/logs/error.log.

For example (when nginx failed to locate perl module)

$ cat /opt/nginx/1.19.2/logs/error.log
2021/01/12 10:28:27 [emerg] 48992#48992: require_pv("test.pm") failed:
"Can't locate test.pm in @INC (@INC contains:
/appli/projects/instance/nginx_1.19/perl/modules/
/opt/nginx/1.19.2/./modules/perl/ /usr/local/lib64/perl5
/usr/local/share/perl5 /usr/lib64/perl5/vendor_perl
/usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at (eval
1) line 1."

or when start up went fine :

$ cat /opt/nginx/1.19.2/logs/error.log
2021/01/12 11:40:55 [notice] 53486#53486: signal process started

In other hand, remaining logs can be found in 
/var/projects/instance/nginx_1.19/logs/error.log.
This behaviour does not reproduce when I start nginx without perl module
directives.

Any ideas of what is going on here ?

Thank you !

Antoine

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,290458,290458#msg-290458