How do I assign a custom primary private IP address to my Amazon EC2 instance?

Short description

You can associate a custom private IP address to your Amazon EC2 instance while you configure the instance before you launch it. However, the IP address must meet these conditions:

• Have a valid IPv4 range.
• Be within the CIDR range of the chosen subnet.
• Be available. The private IP address must not be tied to any other resource.

Note: It's not possible to assign a new custom primary private IP address to an existing instance.

Resolution

1. Configure an Amazon EC2 instance. For detailed steps, see Launch an instance using the old launch instance wizard or Launch an instance using the new launch instance wizard.
2. In the Configure Instance Details section, for Network, select a virtual private cloud (VPC), or create a new VPC. For Subnet, select the subnet, or create a new subnet where you want to launch your instance.
3. In the Network interfaces section, for Primary IP (the primary private IPv4 address of the network interface), enter the custom private IPv4 address.
4. Complete the launch instance wizard configurations, and then launch the instance.

Related information

VPCs and subnets