I have installed php7 and nginx on amazon ec2 instance and getting following error in yii2.

```
2016/11/11 07:00:33 [error] 11220#0: *14 upstream timed out (110: Connection timed out) 
while reading response header from upstream, client: XXX.XX.XXX.111, server: 
example.com, request: "POST /backend/web/index.php?r=site%2Flogin HTTP/1.1",
upstream: "fastcgi://127.0.0.1:9000", host: "example.com",
referrer: "http://example.com/backend/web/index.php?r=site%2Flogin"

```

Below are my nginx config file. (/etc/nginx/conf.d/virtual.conf)

```
server {
    charset utf-8;
    client_max_body_size 128M;
    listen       80;
    server_name example.com;

    location / {
        root   /path/to/root;
        index index.php  index.html index.htm;
        # Redirect everything that isn't a real file to index.php
        try_files $uri $uri/ /index.php?$args;
    }

    error_page  404              /errors/404.html;
    location = /errors/404.html {
        root   /path/to/root;
    }

    error_page   500 502 503 504  /errors/50x.html;
    location = /errors/50x.html {
        root   /path/to/root;
    }

    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
    #
    location ~ \.php$ {
        root           /path/to/root;
        fastcgi_pass   127.0.0.1:9000;
        #fastcgi_pass   /var/run/php-fpm.sock;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME   $document_root$fastcgi_script_name;
        include        fastcgi_params;
        try_files $uri =404;
    }
    location ~ /\.(ht|svn|git) {
        deny all;
    }
}

```

I already try to to do following but no luck :(

```
location / {
        ...
        proxy_read_timeout 300;
        ...
    }

```