Enable AWS NAT Gateway for High Availability (HA)
Use NAT gateways so that instances in a private subnet can connect to services outside your Virtual Private Cloud (VPC). External services cannot initiate a connection with these instances.
See this AWS Documentation for more information on NAT Gateways.
In the DuploCloud Portal, navigate to Administrator -> Infrastructure. The Infrastructure page displays.
Select the Infrastructure for which you want to enable NAT Gateway from the Name column.
Click the Settings tab.
Click Add. The Infra - Set Custom Data pane displays.
In the Setting Name field, select Enable HA NAT Gateway from the list box.
Select Enable.
Click Set.