[ aws . ec2 ]

create-nat-gateway

Description

Creates a NAT gateway in the specified subnet. This action creates a network interface in the specified subnet with a private IP address from the IP address range of the subnet. You can create either a public NAT gateway or a private NAT gateway.

With a public NAT gateway, internet-bound traffic from a private subnet can be routed to the NAT gateway, so that instances in a private subnet can connect to the internet.

With a private NAT gateway, private communication is routed across VPCs and on-premises networks through a transit gateway or virtual private gateway. Common use cases include running large workloads behind a small pool of allowlisted IPv4 addresses, preserving private IPv4 addresses, and communicating between overlapping networks.

For more information, see NAT gateways in the Amazon Virtual Private Cloud User Guide .

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.

Synopsis

  create-nat-gateway
[--allocation-id <value>]
[--client-token <value>]
[--dry-run | --no-dry-run]
--subnet-id <value>
[--tag-specifications <value>]
[--connectivity-type <value>]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]

Options

--allocation-id (string)

[Public NAT gateways only] The allocation ID of an Elastic IP address to associate with the NAT gateway. You cannot specify an Elastic IP address with a private NAT gateway. If the Elastic IP address is associated with another resource, you must first disassociate it.

--client-token (string)

Unique, case-sensitive identifier that you provide to ensure the idempotency of the request. For more information, see How to ensure idempotency .

Constraint: Maximum 64 ASCII characters.

--dry-run | --no-dry-run (boolean)

Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is DryRunOperation . Otherwise, it is UnauthorizedOperation .

--subnet-id (string)

The subnet in which to create the NAT gateway.

--tag-specifications (list)

The tags to assign to the NAT gateway.

(structure)

The tags to apply to a resource when the resource is being created.

ResourceType -> (string)

The type of resource to tag on creation.

Tags -> (list)

The tags to apply to the resource.

(structure)

Describes a tag.

Key -> (string)

The key of the tag.

Constraints: Tag keys are case-sensitive and accept a maximum of 127 Unicode characters. May not begin with aws: .

Value -> (string)

The value of the tag.

Constraints: Tag values are case-sensitive and accept a maximum of 256 Unicode characters.

Shorthand Syntax:

ResourceType=string,Tags=[{Key=string,Value=string},{Key=string,Value=string}] ...

JSON Syntax:

[
  {
    "ResourceType": "capacity-reservation"|"client-vpn-endpoint"|"customer-gateway"|"carrier-gateway"|"dedicated-host"|"dhcp-options"|"egress-only-internet-gateway"|"elastic-ip"|"elastic-gpu"|"export-image-task"|"export-instance-task"|"fleet"|"fpga-image"|"host-reservation"|"image"|"import-image-task"|"import-snapshot-task"|"instance"|"instance-event-window"|"internet-gateway"|"ipam"|"ipam-pool"|"ipam-scope"|"ipv4pool-ec2"|"ipv6pool-ec2"|"key-pair"|"launch-template"|"local-gateway"|"local-gateway-route-table"|"local-gateway-virtual-interface"|"local-gateway-virtual-interface-group"|"local-gateway-route-table-vpc-association"|"local-gateway-route-table-virtual-interface-group-association"|"natgateway"|"network-acl"|"network-interface"|"network-insights-analysis"|"network-insights-path"|"network-insights-access-scope"|"network-insights-access-scope-analysis"|"placement-group"|"prefix-list"|"replace-root-volume-task"|"reserved-instances"|"route-table"|"security-group"|"security-group-rule"|"snapshot"|"spot-fleet-request"|"spot-instances-request"|"subnet"|"traffic-mirror-filter"|"traffic-mirror-session"|"traffic-mirror-target"|"transit-gateway"|"transit-gateway-attachment"|"transit-gateway-connect-peer"|"transit-gateway-multicast-domain"|"transit-gateway-route-table"|"volume"|"vpc"|"vpc-endpoint"|"vpc-endpoint-service"|"vpc-peering-connection"|"vpn-connection"|"vpn-gateway"|"vpc-flow-log",
    "Tags": [
      {
        "Key": "string",
        "Value": "string"
      }
      ...
    ]
  }
  ...
]

--connectivity-type (string)

Indicates whether the NAT gateway supports public or private connectivity. The default is public connectivity.

Possible values:

• private

• public

--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.

See ‘aws help’ for descriptions of global parameters.

Examples

Example 1: To create a public NAT gateway

The following create-nat-gateway example creates a public NAT gateway in the specified subnet and associates the Elastic IP address with the specified allocation ID. When you create a public NAT gateway, you must associate an Elastic IP address.

aws ec2 create-nat-gateway \
    --subnet-id subnet-0250c25a1fEXAMPLE \
    --allocation-id eipalloc-09ad461b0dEXAMPLE

Output:

{
    "NatGateway": {
        "CreateTime": "2021-12-01T22:22:38.000Z",
        "NatGatewayAddresses": [
            {
                "AllocationId": "eipalloc-09ad461b0dEXAMPLE"
            }
        ],
        "NatGatewayId": "nat-0c61bf8a12EXAMPLE",
        "State": "pending",
        "SubnetId": "subnet-0250c25a1fEXAMPLE",
        "VpcId": "vpc-0a60eb65b4EXAMPLE",
        "ConnectivityType": "public"
    }
}

For more information, see NAT gateways in the Amazon VPC User Guide.

Example 2: To create a private NAT gateway

The following create-nat-gateway example creates a private NAT gateway in the specified subnet. A private NAT gateway does not have an associated Elastic IP address.

aws ec2 create-nat-gateway \
    --subnet-id subnet-0250c25a1fEXAMPLE \
    --connectivity-type private

Output:

{
    "NatGateway": {
        "CreateTime": "2021-12-01T22:26:00.000Z",
        "NatGatewayAddresses": [
            {}
        ],
        "NatGatewayId": "nat-011b568379EXAMPLE",
        "State": "pending",
        "SubnetId": "subnet-0250c25a1fEXAMPLE",
        "VpcId": "vpc-0a60eb65b4EXAMPLE",
        "ConnectivityType": "private"
    }
}

For more information, see NAT gateways in the Amazon VPC User Guide.

Output

ClientToken -> (string)

Unique, case-sensitive identifier to ensure the idempotency of the request. Only returned if a client token was provided in the request.

NatGateway -> (structure)

Information about the NAT gateway.

CreateTime -> (timestamp)

The date and time the NAT gateway was created.

DeleteTime -> (timestamp)

The date and time the NAT gateway was deleted, if applicable.

FailureCode -> (string)

If the NAT gateway could not be created, specifies the error code for the failure. (InsufficientFreeAddressesInSubnet | Gateway.NotAttached | InvalidAllocationID.NotFound | Resource.AlreadyAssociated | InternalError | InvalidSubnetID.NotFound )

FailureMessage -> (string)

If the NAT gateway could not be created, specifies the error message for the failure, that corresponds to the error code.

• For InsufficientFreeAddressesInSubnet: “Subnet has insufficient free addresses to create this NAT gateway”

• For Gateway.NotAttached: “Network vpc-xxxxxxxx has no Internet gateway attached”

• For InvalidAllocationID.NotFound: “Elastic IP address eipalloc-xxxxxxxx could not be associated with this NAT gateway”

• For Resource.AlreadyAssociated: “Elastic IP address eipalloc-xxxxxxxx is already associated”

• For InternalError: “Network interface eni-xxxxxxxx, created and used internally by this NAT gateway is in an invalid state. Please try again.”

• For InvalidSubnetID.NotFound: “The specified subnet subnet-xxxxxxxx does not exist or could not be found.”

NatGatewayAddresses -> (list)

Information about the IP addresses and network interface associated with the NAT gateway.

(structure)

Describes the IP addresses and network interface associated with a NAT gateway.

AllocationId -> (string)

[Public NAT gateway only] The allocation ID of the Elastic IP address that’s associated with the NAT gateway.

NetworkInterfaceId -> (string)

The ID of the network interface associated with the NAT gateway.

PrivateIp -> (string)

The private IP address associated with the NAT gateway.

PublicIp -> (string)

[Public NAT gateway only] The Elastic IP address associated with the NAT gateway.

NatGatewayId -> (string)

The ID of the NAT gateway.

ProvisionedBandwidth -> (structure)

Reserved. If you need to sustain traffic greater than the documented limits , contact us through the Support Center .

ProvisionTime -> (timestamp)

Reserved. If you need to sustain traffic greater than the documented limits , contact us through the Support Center .

Provisioned -> (string)

Reserved. If you need to sustain traffic greater than the documented limits , contact us through the Support Center .

RequestTime -> (timestamp)

Reserved. If you need to sustain traffic greater than the documented limits , contact us through the Support Center .

Requested -> (string)

Reserved. If you need to sustain traffic greater than the documented limits , contact us through the Support Center .

Status -> (string)

Reserved. If you need to sustain traffic greater than the documented limits , contact us through the Support Center .

State -> (string)

The state of the NAT gateway.

• pending : The NAT gateway is being created and is not ready to process traffic.

• failed : The NAT gateway could not be created. Check the failureCode and failureMessage fields for the reason.

• available : The NAT gateway is able to process traffic. This status remains until you delete the NAT gateway, and does not indicate the health of the NAT gateway.

• deleting : The NAT gateway is in the process of being terminated and may still be processing traffic.

• deleted : The NAT gateway has been terminated and is no longer processing traffic.

SubnetId -> (string)

The ID of the subnet in which the NAT gateway is located.

VpcId -> (string)

The ID of the VPC in which the NAT gateway is located.

Tags -> (list)

The tags for the NAT gateway.

(structure)

Describes a tag.

Key -> (string)

The key of the tag.

Constraints: Tag keys are case-sensitive and accept a maximum of 127 Unicode characters. May not begin with aws: .

Value -> (string)

The value of the tag.

Constraints: Tag values are case-sensitive and accept a maximum of 256 Unicode characters.

ConnectivityType -> (string)

Indicates whether the NAT gateway supports public or private connectivity.