Allocate a Floating (Public) IP to instance
Log in to the dashboard. Select the appropriate project from the drop down menu at the top left. On the Project tab, open the Compute tab and click Access & Security category. Click the Floating IPs tab, which shows the floating IP addresses allocated to instances. Click Allocate IP To Project. Choose the pool from which to pick the IP address. Click Allocate IP. In the Floating IP s list, click Associate. In the Manage Floating IP Associations dialog box, choose the following options: The IP Address field is filled automatically, but you can add a new IP address by clicking the + button. In the Port to be associated field, select a port from the list. The list shows all the instances with their fixed IP addresses. Click Associate.