Debug - Nginx

Using response

server {
    # ...

    default_type text/plain;

    # return <status> "<response>";
    return 200 "$uri";
}

Using header

note

add_header is inherited from the parent level only if there are no add_header on the current level

server {
    # add_header <name> "<value>" [always];
    add_header X-Debug "$uri" always;
}

Using log

server {
    # log_format <name> "<format>";
    log_format debug "$uri";
    access_log /var/log/nginx/debug.log debug;
}