anchor.diff:  
   ## <a id="api_access"></a>Can you access the OpenStack APIs for your instance of OpenStack? ##
   
  -You should verify that you have your OpenStack API credentials and can make API calls. Credentials are a combination of your user name, password, and the tenant or project your cloud is running under. Some providers also require you to set the region.
  +You should verify that you have your OpenStack API credentials and can make API calls, and make sure you know wich endpoint must use(v2/v3). Credentials are a combination of your user name, password, and the tenant or project your cloud is running under. Some providers also require you to set the region.
  +
  +If your endpoint is v2:
   
   Create a `~/.fog` file and copy the below content:
   
  
positive.code: </pre>
  
  <p class="note"><strong>Note</strong>: You need to include <code>/v2.0/tokens</code> in the auth URL above.</p>
  
  Install the `fog` application in your terminal, then run it in interactive mode:
  
  
negative.code: 1. For **Code**, enter **-1**.
  1. For **Remote**, select **Security Group**.
  1. For **Security Group**, select **ping-test (Current)**.
  1. Click **Add** type.
  
  <p class="note"><strong>Note</strong>: If your interface contains the <strong>Direction</strong> field, use the default <strong>Direction</strong> entry to create an <strong>Ingress</strong> rule. You must create an <strong>Egress</strong> rule that matches the <strong>Ingress</strong> rule settings.</p>
  
  