Total indexed is zero with 302 status I'm using Google Webmaster Tools to manage my site SEO; even with 600 articles my total indexed pages is zero.  

When I use "Fetch as Google" I get the following.  

&lt;!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"&gt;
&lt;html&gt;
  &lt;head&gt;
    &lt;title&gt;302 Found&lt;/title&gt;
  &lt;/head&gt;
  &lt;body&gt;
    &lt;h1&gt;Found&lt;/h1&gt;
    &lt;p&gt;The document has moved &lt;a href="http://example.com"&gt;here&lt;/a&gt;.&lt;/p&gt; &lt;hr /&gt;
  &lt;/body&gt;
&lt;/html&gt;


My site is made with Drupal 7, and the Boost module. 

Is that caused by a wrong configuration? If so, how can I fix it?
It looks like you have a different domain either registered or for testing with Google Webmaster Tools.

e.g example.com vs www.example.com

When the bot requests example.com, it is redirected to www.example.com with an HTTP 302 Found reponse.

The solution would be to register the same preferred domain with Google Webmaster Tools that is used for regular site visitors.

As for 0 pages of a new site being indexed in Google, give it time. If you've registered the sitemap, and signed up for Google Analytics, the googlebot will arrive soon. It can take a couple of weeks.