When a public IP can be assigned

You can use a public IP in the following scenarios:

• Elastic IP assigned after launch
  If the instance uses an Elastic IP, you can associate the public IP after the instance is launched.
  
  

• Public IP assigned at launch
  You can assign a public IP before launching an instance, or configure the subnet to automatically assign public IPv4 addresses for new instances.

Assign a public IP when private IP persistence is enabled

If the node uses private IP persistence, follow these steps to ensure a public IP is assigned correctly.

1. Enable automatic public IP assignment in AWS

   In the AWS console, enable auto‑assign IPv4 address for the subnet used by the node.
   
   

2. Pause the stateful node

   In the Flexera console, pause the stateful node.
   
   

3. Update the public IP assignment setting

   Edit the stateful node and go to Advanced > Public IP assignment.

   Select one of the following options:

   • According to subnet default

   • Associate public IP

   Save the configuration.
   
   

4. Delete the existing ENI

   In the AWS console, delete the elastic network interface [ENI] associated with the node.
   
   

5. Resume the stateful node

   In the Flexera console, resume the stateful node.

   Flexera creates a new ENI, assigns a private IP from the IP pool, and attaches a public IP based on the subnet settings.