centOS::
$ sudo usermod -a -G nginx rlemon
$ groups
rlemon

    location / {
        root   /usr/share/nginx/html;
        index  index.html index.htm;
    }

server {
        listen 80 default_server;

        #root /usr/share/nginx/html;
        root /var/www;
        index index.html index.htm;

        # Make site accessible from localhost
        server_name localhost;

        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                try_files $uri $uri/ =404;
                # Uncomment to enable naxsi on this location
                # include /etc/nginx/naxsi.rules

    location / {
        root   /var/www/html;
        index  index.html index.htm;
    }

    error_page  404              /404.html;
    location = /404.html {
        root   /usr/share/nginx/html;
    }

    # redirect server error pages to the static page /50x.html
    #
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }

        # Only for nginx-naxsi used with nginx-naxsi-ui : process denied request
s
        #location /RequestDenied {
        #       proxy_pass 127.0.0.1:8080;
        #}

        #error_page 404 /404.html;

        # redirect server error pages to the static page /50x.html
        #
        #error_page 500 502 503 504 /50x.html;
        #location = /50x.html {
        #       root /usr/share/nginx/html;
        #}