DigitalOcean floating IPs are publicly-accessible static IP addresses that you can assign to Droplets and instantly remap between other Droplets in the same datacenter. Implement a failover mechanism with floating IPs to build a high availability infrastructure.
To create a floating IP from the control panel, click Create in the top right, then click Floating IP.
This takes you to the Floating IPs page. When you have no floating IPs, this page invites you to choose a Droplet and assign one.
To reserve and assign a floating IP to one of your Droplets, locate the Droplet using the Search for a Droplet text box, then click Assign Floating IP.
Once you have at least one address assigned, you can reserve additional floating IP addresses in specific datacenters without assigning them to Droplets by following the click here link in the header text.