how is Nginx finding default root

 

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I just installed nginx using brew and its default config is located at /usr/local/etc/nginx. The server configuration in default conf file is as below (only small portion pasted)

server {
        listen       8080;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

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

The location from which the index.html is being served is /usr/local/var/www/. Now, looking at the above configuration, I don't understand how nginx goes to /usr/local/var/www/ to look for default file? Is there a different configuration that directs nginx to look into that folder?

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edited Apr 17 at 18:27

 

 

asked Apr 17 at 18:08

prabodhprakash

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2 Answers

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1. If a value of the root directive is relative, the full path is composed using the nginx prefix. See that answer for details.
2. In the nginx Homebrew formula the --prefix is set to the Homebrew prefix:

      --prefix=#{prefix}

3. The default Homebrew prefix is /usr/local on Intel.
4. Thus, the root is html → /usr/local/html (the nginx prefix + the relative path).
5. In the nginx Hombebrew formula this location is symlinked to #{HOMEBREW_PREFIX}/var/www, that is, to /usr/local/var/www:

# nginx's docroot is #{prefix}/html, this isn't useful, so we symlink it
# to #{HOMEBREW_PREFIX}/var/www. The reason we symlink instead of patching
# is so the user can redirect it easily to something else if they choose.

这个prefix 可以通过nginx -V命令看到