CfnSubnet
- class aws_cdk.aws_ec2.CfnSubnet(scope, id, *, vpc_id, assign_ipv6_address_on_creation=None, availability_zone=None, availability_zone_id=None, cidr_block=None, enable_dns64=None, ipv6_cidr_block=None, ipv6_native=None, map_public_ip_on_launch=None, outpost_arn=None, private_dns_name_options_on_launch=None, tags=None)
Bases:
CfnResourceA CloudFormation
AWS::EC2::Subnet.Specifies a subnet for the specified VPC.
For an IPv4 only subnet, specify an IPv4 CIDR block. If the VPC has an IPv6 CIDR block, you can create an IPv6 only subnet or a dual stack subnet instead. For an IPv6 only subnet, specify an IPv6 CIDR block. For a dual stack subnet, specify both an IPv4 CIDR block and an IPv6 CIDR block.
For more information, see Subnets for your VPC in the Amazon VPC User Guide .
- CloudformationResource:
AWS::EC2::Subnet
- Link:
http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-subnet.html
- ExampleMetadata:
fixture=_generated
Example:
# The code below shows an example of how to instantiate this type. # The values are placeholders you should change. import aws_cdk.aws_ec2 as ec2 # private_dns_name_options_on_launch: Any cfn_subnet = ec2.CfnSubnet(self, "MyCfnSubnet", vpc_id="vpcId", # the properties below are optional assign_ipv6_address_on_creation=False, availability_zone="availabilityZone", availability_zone_id="availabilityZoneId", cidr_block="cidrBlock", enable_dns64=False, ipv6_cidr_block="ipv6CidrBlock", ipv6_native=False, map_public_ip_on_launch=False, outpost_arn="outpostArn", private_dns_name_options_on_launch=private_dns_name_options_on_launch, tags=[CfnTag( key="key", value="value" )] )
Create a new
AWS::EC2::Subnet.- Parameters:
scope (
Construct) –scope in which this resource is defined.
id (
str) –scoped id of the resource.
vpc_id (
str) – The ID of the VPC the subnet is in. If you update this property, you must also update theCidrBlockproperty.assign_ipv6_address_on_creation (
Union[bool,IResolvable,None]) – Indicates whether a network interface created in this subnet receives an IPv6 address. The default value isfalse. If you specifyAssignIpv6AddressOnCreation, you must also specifyIpv6CidrBlock.availability_zone (
Optional[str]) – The Availability Zone of the subnet. If you update this property, you must also update theCidrBlockproperty.availability_zone_id (
Optional[str]) – The AZ ID of the subnet.cidr_block (
Optional[str]) – The IPv4 CIDR block assigned to the subnet. If you update this property, we create a new subnet, and then delete the existing one.enable_dns64 (
Union[bool,IResolvable,None]) – Indicates whether DNS queries made to the Amazon-provided DNS Resolver in this subnet should return synthetic IPv6 addresses for IPv4-only destinations. For more information, see DNS64 and NAT64 in the Amazon Virtual Private Cloud User Guide .ipv6_cidr_block (
Optional[str]) – The IPv6 CIDR block. If you specifyAssignIpv6AddressOnCreation, you must also specifyIpv6CidrBlock.ipv6_native (
Union[bool,IResolvable,None]) – Indicates whether this is an IPv6 only subnet. For more information, see Subnet basics in the Amazon Virtual Private Cloud User Guide .map_public_ip_on_launch (
Union[bool,IResolvable,None]) – Indicates whether instances launched in this subnet receive a public IPv4 address. The default value isfalse.outpost_arn (
Optional[str]) – The Amazon Resource Name (ARN) of the Outpost.private_dns_name_options_on_launch (
Optional[Any]) – The hostname type for EC2 instances launched into this subnet and how DNS A and AAAA record queries to the instances should be handled. For more information, see Amazon EC2 instance hostname types in the Amazon Elastic Compute Cloud User Guide . Available options: - EnableResourceNameDnsAAAARecord (true | false) - EnableResourceNameDnsARecord (true | false) - HostnameType (ip-name | resource-name)tags (
Optional[Sequence[Union[CfnTag,Dict[str,Any]]]]) – Any tags assigned to the subnet.
Methods
- add_deletion_override(path)
Syntactic sugar for
addOverride(path, undefined).- Parameters:
path (
str) – The path of the value to delete.- Return type:
None
- add_depends_on(target)
Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.
This can be used for resources across stacks (or nested stack) boundaries and the dependency will automatically be transferred to the relevant scope.
- Parameters:
target (
CfnResource)- Return type:
None
- add_metadata(key, value)
Add a value to the CloudFormation Resource Metadata.
- Parameters:
key (
str)value (
Any)
- See:
- Return type:
None
Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.
- add_override(path, value)
Adds an override to the synthesized CloudFormation resource.
To add a property override, either use
addPropertyOverrideor prefixpathwith “Properties.” (i.e.Properties.TopicName).If the override is nested, separate each nested level using a dot (.) in the path parameter. If there is an array as part of the nesting, specify the index in the path.
To include a literal
.in the property name, prefix with a\. In most programming languages you will need to write this as"\\."because the\itself will need to be escaped.For example:
cfn_resource.add_override("Properties.GlobalSecondaryIndexes.0.Projection.NonKeyAttributes", ["myattribute"]) cfn_resource.add_override("Properties.GlobalSecondaryIndexes.1.ProjectionType", "INCLUDE")
would add the overrides Example:
"Properties": { "GlobalSecondaryIndexes": [ { "Projection": { "NonKeyAttributes": [ "myattribute" ] ... } ... }, { "ProjectionType": "INCLUDE" ... }, ] ... }
The
valueargument toaddOverridewill not be processed or translated in any way. Pass raw JSON values in here with the correct capitalization for CloudFormation. If you pass CDK classes or structs, they will be rendered with lowercased key names, and CloudFormation will reject the template.- Parameters:
path (
str) –The path of the property, you can use dot notation to override values in complex types. Any intermdediate keys will be created as needed.
value (
Any) –The value. Could be primitive or complex.
- Return type:
None
- add_property_deletion_override(property_path)
Adds an override that deletes the value of a property from the resource definition.
- Parameters:
property_path (
str) – The path to the property.- Return type:
None
- add_property_override(property_path, value)
Adds an override to a resource property.
Syntactic sugar for
addOverride("Properties.<...>", value).- Parameters:
property_path (
str) – The path of the property.value (
Any) – The value.
- Return type:
None
- apply_removal_policy(policy=None, *, apply_to_update_replace_policy=None, default=None)
Sets the deletion policy of the resource based on the removal policy specified.
The Removal Policy controls what happens to this resource when it stops being managed by CloudFormation, either because you’ve removed it from the CDK application or because you’ve made a change that requires the resource to be replaced.
The resource can be deleted (
RemovalPolicy.DESTROY), or left in your AWS account for data recovery and cleanup later (RemovalPolicy.RETAIN).- Parameters:
policy (
Optional[RemovalPolicy])apply_to_update_replace_policy (
Optional[bool]) – Apply the same deletion policy to the resource’s “UpdateReplacePolicy”. Default: truedefault (
Optional[RemovalPolicy]) – The default policy to apply in case the removal policy is not defined. Default: - Default value is resource specific. To determine the default value for a resoure, please consult that specific resource’s documentation.
- Return type:
None
- get_att(attribute_name)
Returns a token for an runtime attribute of this resource.
Ideally, use generated attribute accessors (e.g.
resource.arn), but this can be used for future compatibility in case there is no generated attribute.- Parameters:
attribute_name (
str) – The name of the attribute.- Return type:
- get_metadata(key)
Retrieve a value value from the CloudFormation Resource Metadata.
- Parameters:
key (
str)- See:
- Return type:
Any
Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.
- inspect(inspector)
Examines the CloudFormation resource and discloses attributes.
- Parameters:
inspector (
TreeInspector) –tree inspector to collect and process attributes.
- Return type:
None
- override_logical_id(new_logical_id)
Overrides the auto-generated logical ID with a specific ID.
- Parameters:
new_logical_id (
str) – The new logical ID to use for this stack element.- Return type:
None
- to_string()
Returns a string representation of this construct.
- Return type:
str- Returns:
a string representation of this resource
Attributes
- CFN_RESOURCE_TYPE_NAME = 'AWS::EC2::Subnet'
- assign_ipv6_address_on_creation
Indicates whether a network interface created in this subnet receives an IPv6 address. The default value is
false.If you specify
AssignIpv6AddressOnCreation, you must also specifyIpv6CidrBlock.
- attr_availability_zone
.
{ "Fn::GetAtt" : [ "mySubnet", "AvailabilityZone" ] }- CloudformationAttribute:
AvailabilityZone
- Type:
The Availability Zone of this subnet. For example
- attr_ipv6_cidr_blocks
The IPv6 CIDR blocks that are associated with the subnet, such as
[ 2001:db8:1234:1a00::/64 ].- CloudformationAttribute:
Ipv6CidrBlocks
- attr_network_acl_association_id
The ID of the network ACL that is associated with the subnet’s VPC, such as
acl-5fb85d36.- CloudformationAttribute:
NetworkAclAssociationId
- attr_outpost_arn
The Amazon Resource Name (ARN) of the Outpost.
- CloudformationAttribute:
OutpostArn
- attr_subnet_id
The ID of the subnet.
- CloudformationAttribute:
SubnetId
- attr_vpc_id
The ID of the subnet’s VPC, such as
vpc-11ad4878.- CloudformationAttribute:
VpcId
- availability_zone
The Availability Zone of the subnet.
If you update this property, you must also update the
CidrBlockproperty.
- availability_zone_id
The AZ ID of the subnet.
- cfn_options
Options for this resource, such as condition, update policy etc.
- cfn_resource_type
AWS resource type.
- cidr_block
The IPv4 CIDR block assigned to the subnet.
If you update this property, we create a new subnet, and then delete the existing one.
- creation_stack
return:
the stack trace of the point where this Resource was created from, sourced from the +metadata+ entry typed +aws:cdk:logicalId+, and with the bottom-most node +internal+ entries filtered.
- enable_dns64
Indicates whether DNS queries made to the Amazon-provided DNS Resolver in this subnet should return synthetic IPv6 addresses for IPv4-only destinations.
For more information, see DNS64 and NAT64 in the Amazon Virtual Private Cloud User Guide .
- ipv6_cidr_block
The IPv6 CIDR block.
If you specify
AssignIpv6AddressOnCreation, you must also specifyIpv6CidrBlock.
- ipv6_native
Indicates whether this is an IPv6 only subnet.
For more information, see Subnet basics in the Amazon Virtual Private Cloud User Guide .
- logical_id
The logical ID for this CloudFormation stack element.
The logical ID of the element is calculated from the path of the resource node in the construct tree.
To override this value, use
overrideLogicalId(newLogicalId).- Returns:
the logical ID as a stringified token. This value will only get resolved during synthesis.
- map_public_ip_on_launch
Indicates whether instances launched in this subnet receive a public IPv4 address.
The default value is
false.
- node
The construct tree node associated with this construct.
- outpost_arn
The Amazon Resource Name (ARN) of the Outpost.
- private_dns_name_options_on_launch
The hostname type for EC2 instances launched into this subnet and how DNS A and AAAA record queries to the instances should be handled.
For more information, see Amazon EC2 instance hostname types in the Amazon Elastic Compute Cloud User Guide .
Available options:
EnableResourceNameDnsAAAARecord (true | false)
EnableResourceNameDnsARecord (true | false)
HostnameType (ip-name | resource-name)
- ref
Return a string that will be resolved to a CloudFormation
{ Ref }for this element.If, by any chance, the intrinsic reference of a resource is not a string, you could coerce it to an IResolvable through
Lazy.any({ produce: resource.ref }).
- stack
The stack in which this element is defined.
CfnElements must be defined within a stack scope (directly or indirectly).
- tags
Any tags assigned to the subnet.
- vpc_id
The ID of the VPC the subnet is in.
If you update this property, you must also update the
CidrBlockproperty.
Static Methods
- classmethod is_cfn_element(x)
Returns
trueif a construct is a stack element (i.e. part of the synthesized cloudformation template).Uses duck-typing instead of
instanceofto allow stack elements from different versions of this library to be included in the same stack.- Parameters:
x (
Any)- Return type:
bool- Returns:
The construct as a stack element or undefined if it is not a stack element.
- classmethod is_cfn_resource(construct)
Check whether the given construct is a CfnResource.
- Parameters:
construct (
IConstruct)- Return type:
bool
- classmethod is_construct(x)
Return whether the given object is a Construct.
- Parameters:
x (
Any)- Return type:
bool
PrivateDnsNameOptionsOnLaunchProperty
- class CfnSubnet.PrivateDnsNameOptionsOnLaunchProperty(*, enable_resource_name_dns_aaaa_record=None, enable_resource_name_dns_a_record=None, hostname_type=None)
Bases:
objectDescribes the options for instance hostnames.
- Parameters:
enable_resource_name_dns_aaaa_record (
Union[bool,IResolvable,None]) – Indicates whether to respond to DNS queries for instance hostname with DNS AAAA records.enable_resource_name_dns_a_record (
Union[bool,IResolvable,None]) – Indicates whether to respond to DNS queries for instance hostnames with DNS A records.hostname_type (
Optional[str]) – The type of hostname for EC2 instances. For IPv4 only subnets, an instance DNS name must be based on the instance IPv4 address. For IPv6 only subnets, an instance DNS name must be based on the instance ID. For dual-stack subnets, you can specify whether DNS names use the instance IPv4 address or the instance ID.
- Link:
- ExampleMetadata:
fixture=_generated
Example:
# The code below shows an example of how to instantiate this type. # The values are placeholders you should change. import aws_cdk.aws_ec2 as ec2 private_dns_name_options_on_launch_property = ec2.CfnSubnet.PrivateDnsNameOptionsOnLaunchProperty( enable_resource_name_dns_aaaa_record=False, enable_resource_name_dns_aRecord=False, hostname_type="hostnameType" )
Attributes
- enable_resource_name_dns_a_record
Indicates whether to respond to DNS queries for instance hostnames with DNS A records.
- enable_resource_name_dns_aaaa_record
Indicates whether to respond to DNS queries for instance hostname with DNS AAAA records.
- hostname_type
The type of hostname for EC2 instances.
For IPv4 only subnets, an instance DNS name must be based on the instance IPv4 address. For IPv6 only subnets, an instance DNS name must be based on the instance ID. For dual-stack subnets, you can specify whether DNS names use the instance IPv4 address or the instance ID.