example.com nginx config

server {
    listen 80;

    server_name example.com www.example.com;

    location / {
        rewrite ^/sub1/?(.*)$ https://sub1.example.com/$1 permanent;
        rewrite ^/sub2/?(.*)$ https://sub2.example.com/$1 permanent;
        rewrite ^/sub3/?(.*)$ https://sub3.example.com/$1 permanent;
        rewrite ^/sub4/?(.*)$ https://sub4.example.com/$1 permanent;
        return 301 https://$host$request_uri;
    }
}


server {
    listen 443 ssl;

    root /var/www/example.com;
    index index.php index.html index.htm;

    server_name example.com www.example.com;

    access_log /var/log/nginx/example.com.access.log;
    error_log  /var/log/nginx/example.com.error.log;

    include snippets/ssl-example.conf;
    include snippets/ssl-params.conf;

    set $cache_uri $request_uri;

    # POST requests and URLs with a query string should always go to PHP
    if ($request_method = POST) {
        set $cache_uri 'null cache';
    }
    if ($query_string != "") {
        set $cache_uri 'null cache';
    }

    # Don't cache URIs containing the following segments
    if ($request_uri ~* "(/wp-admin/|/xmlrpc.php|/wp-(app|cron|login|register|mail).php
                          |wp-.*.php|/feed/|index.php|wp-comments-popup.php
                          |wp-links-opml.php|wp-locations.php |sitemap(_index)?.xml
                          |[a-z0-9_-]+-sitemap([0-9]+)?.xml)") {

        set $cache_uri 'null cache';
    }

    # Don't use the cache for logged-in users or recent commenters
    if ($http_cookie ~* "comment_author|wordpress_[a-f0-9]+
                         |wp-postpass|wordpress_logged_in") {
        set $cache_uri 'null cache';
    }

    # Use cached or actual file if it exists, otherwise pass request to WordPress
    location / {
        rewrite ^/sub1/?(.*)$ https://sub1.example.com/$1 permanent;
        rewrite ^/sub2/?(.*)$ https://sub2.example.com/$1 permanent;
        rewrite ^/sub3/?(.*)$ https://sub3.example.com/$1 permanent;
        rewrite ^/sub4/?(.*)$ https://sub4.example.com/$1 permanent;
        try_files /wp-content/cache/supercache/$http_host/$cache_uri/index.html
        $uri $uri/ /index.php;
    }

    location ~ .php$ {
        try_files $uri /index.php;
        include fastcgi_params;
        fastcgi_pass unix:/var/run/php5-fpm.sock;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    }

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

    location = /robots.txt {
        log_not_found off;
        access_log off;
    }

    # Cache static files for as long as possible
    location ~* \.(ogg|ogv|svg|svgz|eot|otf|woff|mp4|ttf|css|rss|atom|js|jpg|jpeg|gif|png|ico|zip|tgz|gz|rar|bz2|doc|xls|exe|ppt|tar|mid|midi|wav|bmp|rtf)$ {
        expires max;
        log_not_found off;
        access_log off;
   }

}