server {
    listen 80;
    listen [::]:80;
    server_name www.example.com example.com;
    rewrite ^ https://example.com$request_uri? permanent;
}
server {
    listen 80;
    server_name sub.example.com;
    location / {
        proxy_pass http://private_ip_address:8890;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
     }
}
server {
    listen 443;
    listen [::]:443 ssl http2;
    include /usr/local/nginx/conf/openssl.conf;
    server_name www.example.com;
    rewrite ^ https://example.com$request_uri? permanent;
}
server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name example.com;
    include /usr/local/nginx/conf/openssl.conf;
    root /home/site/public_html;
    set $no_cache 0;
    index index.php;
    location / {
        try_files $uri $uri/ /index.php?$query_string;
        expires 7d;
    }
    include /usr/local/nginx/conf/wordpress.conf;
    include /usr/local/nginx/apps/pagespeed/optimize.conf;
    include /usr/local/nginx/conf/cache.conf;
    location ~ .php$ {
        include /usr/local/nginx/conf/php.conf;
        include /usr/local/nginx/conf/fastcgi_params;
    }
}