assign-private-ip-addresses¶

Description¶

Assigns one or more secondary private IP addresses to the specified network interface.

You can specify one or more specific secondary IP addresses, or you can specify the number of secondary IP addresses to be automatically assigned within the subnet’s CIDR block range. The number of secondary IP addresses that you can assign to an instance varies by instance type. For information about instance types, see Instance Types in the Amazon Elastic Compute Cloud User Guide . For more information about Elastic IP addresses, see Elastic IP Addresses in the Amazon Elastic Compute Cloud User Guide .

When you move a secondary private IP address to another network interface, any Elastic IP address that is associated with the IP address is also moved.

Remapping an IP address is an asynchronous operation. When you move an IP address from one network interface to another, check network/interfaces/macs/mac/local-ipv4s in the instance metadata to confirm that the remapping is complete.

You must specify either the IP addresses or the IP address count in the request.

You can optionally use Prefix Delegation on the network interface. You must specify either the IPv4 Prefix Delegation prefixes, or the IPv4 Prefix Delegation count. For information, see Assigning prefixes to Amazon EC2 network interfaces in the Amazon Elastic Compute Cloud User Guide .

Synopsis¶

  assign-private-ip-addresses
[--allow-reassignment | --no-allow-reassignment]
--network-interface-id <value>
[--private-ip-addresses <value>]
[--secondary-private-ip-address-count <value>]
[--ipv4-prefixes <value>]
[--ipv4-prefix-count <value>]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]

Options¶

--allow-reassignment | --no-allow-reassignment (boolean)

Indicates whether to allow an IP address that is already assigned to another network interface or instance to be reassigned to the specified network interface.

--network-interface-id (string)

The ID of the network interface.

--private-ip-addresses (list)

One or more IP addresses to be assigned as a secondary private IP address to the network interface. You can’t specify this parameter when also specifying a number of secondary IP addresses.

If you don’t specify an IP address, Amazon EC2 automatically selects an IP address within the subnet range.

(string)

Syntax:

"string" "string" ...

--secondary-private-ip-address-count (integer)

The number of secondary IP addresses to assign to the network interface. You can’t specify this parameter when also specifying private IP addresses.

--ipv4-prefixes (list)

One or more IPv4 prefixes assigned to the network interface. You cannot use this option if you use the Ipv4PrefixCount option.

(string)

Syntax:

"string" "string" ...

--ipv4-prefix-count (integer)

The number of IPv4 prefixes that Amazon Web Services automatically assigns to the network interface. You cannot use this option if you use the Ipv4 Prefixes option.

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated.

See ‘aws help’ for descriptions of global parameters.

Examples¶

Note

To use the following examples, you must have the AWS CLI installed and configured. See the Getting started guide in the AWS CLI User Guide for more information.

Unless otherwise stated, all examples have unix-like quotation rules. These examples will need to be adapted to your terminal’s quoting rules. See Using quotation marks with strings in the AWS CLI User Guide .

To assign a specific secondary private IP address a network interface

This example assigns the specified secondary private IP address to the specified network interface. If the command succeeds, no output is returned.

Command:

aws ec2 assign-private-ip-addresses --network-interface-id eni-e5aa89a3 --private-ip-addresses 10.0.0.82

To assign secondary private IP addresses that Amazon EC2 selects to a network interface

This example assigns two secondary private IP addresses to the specified network interface. Amazon EC2 automatically assigns these IP addresses from the available IP addresses in the CIDR block range of the subnet the network interface is associated with. If the command succeeds, no output is returned.

Command:

aws ec2 assign-private-ip-addresses --network-interface-id eni-e5aa89a3 --secondary-private-ip-address-count 2

Output¶

NetworkInterfaceId -> (string)

The ID of the network interface.

AssignedPrivateIpAddresses -> (list)

The private IP addresses assigned to the network interface.

(structure)

Describes the private IP addresses assigned to a network interface.

PrivateIpAddress -> (string)

The private IP address assigned to the network interface.

AssignedIpv4Prefixes -> (list)

The IPv4 prefixes that are assigned to the network interface.

(structure)

Describes an IPv4 prefix.

Ipv4Prefix -> (string)

The IPv4 prefix. For information, see Assigning prefixes to Amazon EC2 network interfaces in the Amazon Elastic Compute Cloud User Guide .

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