Locate the nginx.conf file my nginx is actually using

Running nginx -t through your commandline will issue out a test and append the output with the filepath to the configuration file (with either an error or success message).

Both nginx -t and nginx -V would print out the default nginx config file path.

$ nginx -tnginx: the configuration file /etc/nginx/nginx.conf syntax is oknginx: configuration file /etc/nginx/nginx.conf test is successful$ nginx -Vnginx version: nginx/1.11.1built by gcc 4.9.2 (Debian 4.9.2-10)built with OpenSSL 1.0.1k 8 Jan 2015TLS SNI support enabledconfigure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib/nginx/modules --conf-path=/etc/nginx/nginx.conf ...

If you want, you can get the config file by:

$ nginx -V 2>&1 | grep -o '\-\-conf-path=\(.*conf\)' | cut -d '=' -f2/etc/nginx/nginx.conf

Even if you have loaded some other config file, they would still print out the default value.

ps aux would show you the current loaded nginx config file.

$ ps auxUSER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMANDroot        11  0.0  0.2  31720  2212 ?        Ss   Jul23   0:00 nginx: master process nginx -c /app/nginx.conf

So that you could actually get the config file by for example:

$ ps aux | grep "[c]onf" | awk '{print $(NF)}'/app/nginx.conf

% ps -o args -C nginxCOMMANDbuild/sbin/nginx -c ../test.conf

If nginx was run without the -c option, then you can use the -V option to find out the configure arguments that were set to non-standard values. Among them the most interesting for you are:

--prefix=PATH                      set installation prefix--sbin-path=PATH                   set nginx binary pathname--conf-path=PATH                   set nginx.conf pathname