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Allocate a floating IP address to an instance
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This paragraph details the reservation of a floating IP address from an existing pool of addresses (allocation) and the association of that address with a specific instance. Since the association of the floating IP must be done with the instance, the association phase This procedure should be performed after the image has been instantiated. |
When an instance is created in OpenStack, it is automatically assigned a fixed IP address in the network to which the instance is assigned. This IP address is permanently associated with the instance until the instance is terminated. However, in addition to the fixed IP address, a floating IP address can also be attached to an instance. Unlike fixed IP addresses, floating IP addresses can have their associations modified at any time, regardless of the state of the instances involved. This procedure details the reservation of a floating IP address from an existing pool of addresses and the association of that address with a specific 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 Network tab.
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 IPs 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.
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