Nginx 1.17.6 ignores kill -HUP

[Luciano Mannucci]

I have an istallation of nginx in a FreeBSD PPC64 server (running
11.3 RELEASE) which seems to ignore kill -HUP: it doesn't reload
configuration and doesn't log the fact that kill has reached it, even
if I set the debug level in error_log to "debug".

nginx -V says:

nginx version: nginx/1.17.6
built by gcc 9.2.0 (FreeBSD Ports Collection) 
built with OpenSSL 1.0.2t  10 Sep 2019
TLS SNI support enabled
configure arguments: --prefix=/usr/local --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_pool/nginx.pid --user=httpd --group=nagcmd
--with-cc=/usr/local/bin/gcc9 --with-cpp=/usr/local/bin/cpp9
--with-cpu-opt=ppc64 --with-http_dav_module --with-http_ssl_module
--with-http_realip_module --with-http_addition_module --with-http_xslt_module
--with-http_image_filter_module --with-http_geoip_module --with-http_sub_module
--with-http_flv_module --with-http_mp4_module --with-http_gunzip_module
--with-http_gzip_static_module --with-http_auth_request_module
--with-http_random_index_module --with-http_secure_link_module
--with-http_degradation_module --with-http_stub_status_module
--with-http_perl_module --with-http_v2_module --with-google_perftools_module
--with-mail --with-mail_ssl_module

Have I missed something?
where should I look to see what happens?

Thanks in advance,

Luciano.
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