title: How to configure WordPress redirection
body: <p>When I access <code>domain.com</code>, I can see top page with URL <code>domain.com</code>.
  If I update the page, it will be redirected like the URL will be <code>origin.domain.com</code>.</p>
  <p>I would like to fix it to <code>domain.com</code>.</p>
  <p>Also, I am setting <code>origin.domain.com</code> on <code>HOME_URL</code> and <code>SITE_URL</code> of WordPress by <code>wp-config.php</code>.</p>
  <p>This is my current environment:</p>
  <pre class="lang-none prettyprint-override"><code>User 
   -&gt; domain.com by HTTPS 
     -&gt; Cloud Front 
       -&gt; subdomain.domain.com by HTTPS
         -&gt; ELB 
           -&gt; subdomain.domain.com by HTTP 
             -&gt; EC2 (WordPress with bitnami)
  </code></pre>
  <p>CloudFront and ELB have certificates, but EC2 does not.</p>
  <p>I guess I have to fix <code>HOST</code> or something to get correct response?</p>