nginx.conf with passenger and php fastcgi

nginx.conf

http {
    passenger_root /home/apps/.rvm/gems/ruby-2.3.7/gems/passenger-5.3.7;
    passenger_ruby /home/apps/.rvm/gems/ruby-2.3.7/wrappers/ruby;

    include       mime.types;
    default_type  application/octet-stream;

    sendfile        on;
    keepalive_timeout  65;

    # nginx 預設的 server，留著可以在 server 啟動後，用瀏覽器去確定有成功
    server {
        listen       80;
        server_name  localhost;

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

        #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   html;
        }
    }


    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    # Upstream to abstract backend connection(s) for php
    # 宣告 php 的 fastcgi 的接口，這樣讓 nginx 知道怎麼處理 *.php 檔案
    upstream php {
        server unix:/var/run/php/php7.2-fpm.sock;
    }

    # 設定一個 Wordpress server
    server {
        listen       80;
        listen       443 ssl;
        root /path/to/website/folder; # 可以是 /var/www/tw.yahoo.com 之類的，把資料夾設成網址名
        server_name  some.url.for.wordpress;
        ssl_certificate /some_path/certificate.crt;
        ssl_certificate_key /some_path/private.key;
        index index.php;

        location = /favicon.ico {
                log_not_found off;
                access_log off;
        }

        location = /robots.txt {
                allow all;
                log_not_found off;
                access_log off;
        }
        location / {
                # This is cool because no php is touched for static content.
                # include the "?$args" part so non-default permalinks doesn't break when using query string
                try_files $uri $uri/ /index.php?$args;
        }

        
        location ~ \.php$ {
                #NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
                include fastcgi.conf;
                fastcgi_intercept_errors on;
                fastcgi_pass php;  # 這裡是關鍵，把 php 的檔案丟到上面設定 php upstream
        }

        location ~* \.(js|css|png|jpg|jpeg|gif|ico)$ {
                expires max;
                log_not_found off;
        }
    }

    server {
      listen 80;
      listen 443 ssl;
      server_name some.rails.site;
      root /home/apps/some_rails_site/public;
      passenger_enabled on;
      client_max_body_size 1G;
      ssl_certificate /rails_ssl/certificate.crt;
      ssl_certificate_key /rails_ssl/private.key;
    }
}