ec2-metadata 2.10.0

account_id: str

The current AWS account ID, e.g. '123456789012'.

ami_id: str

The ID of the AMI used to launch the instance, e.g. 'ami-123456'.

autoscaling_target_lifecycle_state: str | None

Uncached. The target Auto Scaling lifecycle state that the instance is transitionioning to, or None if the instance is not in an autoscaling group. See AWS docs page Retrieve the target lifecycle state through instance metadata.

availability_zone: str

The name of the current AZ e.g. 'eu-west-1a'.

availability_zone_id: str | None

The unique, cross-account ID of the current AZ e.g. 'use1-az6'. See AWS docs page AZ IDs for your AWS resources.

ami_launch_index: int

The index of the instance in the launch request, zero-based, e.g. 0.

ami_manifest_path: str

The path to the AMI manifest file in Amazon S3, or '(unknown)' on EBS-backed AMI’s.

clear_all() -> None

Clear all the cached attributes on the class, meaning their next access will re-fetch the data from the metadata API. This includes clearing the token used to authenticate with the service.

domain: str

The domain for AWS resources for the region. E.g. 'amazonaws.com' for the standard AWS regions and GovCloud (US), or 'amazonaws.com.cn' for China.

iam_info: dict | None

A dictionary of data for the IAM role attached to the instance, or None if no role is attached.

iam_security_credentials: dict | None

A dictionary of data for the security credentials associated with the IAM role attached to the instance, or None if no role is attached.

See the AWS docs section “Retrieve security credentials from instance metadata“ for more details.

instance_action: str

Uncached. A state that notifies if the instance will reboot in preparation for bundling. See the AWS docs section “Instance Metadata Categories” for the valid values.

instance_id: str

The current instance’s ID, e.g. 'i-123456'

instance_identity_document: dict

A dictionary of dynamic data - see AWS docs page “Instance Identity Documents”.

instance_profile_arn: str | None

The ARN of the IAM role/instance profile attached to the instance, taken from iam_info, or None if no role is attached.

instance_profile_id: str | None

The ID of the IAM role/instance profile attached to the instance, taken from iam_info, or None if no role is attached.

instance_profile_name: str | None

The instance profile name, extracted from instance_profile_arn, or None if no role is attached.

instance_type: str

The current instance’s type, e.g. 't2.nano'

kernel_id: str | None

The current instance’s kernel ID, or None if it doesn’t have one, e.g. 'aki-dc9ed9af'.

mac : str

The instance’s MAC address, e.g. '0a:d2:ae:4d:f3:12'

network_interfaces: dict[str, NetworkInterface]

A dictionary of mac address to NetworkInterface, which represents the data available on a network interface - see below. E.g. {'01:23:45:67:89:ab': NetworkInterface('01:23:45:67:89:ab')}

partition: str

The AWS partition where the instance is running. E.g. 'aws' for the standard AWS regions, 'aws-us-gov' for GovCloud (US), or 'aws-cn' for China.

private_hostname : str

The private IPv4 DNS hostname of the instance, e.g. 'ip-172-30-0-0.eu-west-1.compute.internal' .

private_ipv4: str

The private IPv4 of the instance, e.g. '172.30.0.0'.

public_hostname : str | None

The public DNS hostname of the instance, or None if the instance is not public, e.g. 'ec2-1-2-3-4.compute-1.amazonaws.com'.

public_ipv4: str | None

The public IPv4 address of the instance, or None if the instance is not public, e.g. '1.2.3.4'.

region: str

The region the instance is running in, e.g. 'eu-west-1'.

reservation_id: str

The ID of the reservation used to launch the instance, e.g. 'r-12345678901234567'.

security_groups : list[str]

List of security groups by name, e.g. ['ssh-access', 'custom-sg-1'].

spot_instance_action: SpotInstanceAction | None

Uncached. An object describing an action about to happen to this spot instance. Returns None if the instance is not spot, or not marked for termination.

The SpotInstanceAction object has two attributes:

• action: str - the action about to happen, one of "hibernate", "stop", or "terminate".

• time: datetime - the approximate UTC datetime when the action will occur.

See AWS docs section for a little more information.

tags: InstanceTags

A dict-like mapping of the tags for the instance (documented below). This requires you to explicitly enable the feature for the instance. If the feature is not enabled, accessing this attribute raises an error.

(It also seems that there is a bug where if the feature is enabled and then disabled, the metadata service returns an empty response. This is indistinguishable from “no tags”, so beware that in that case, InstanceTags will just look like an empty mapping.)

user_data: bytes | None

The raw user data assigned to the instance (not base64 encoded), or None if there is none.

device_number: int

The unique device number associated with that interface, e.g. 0.

interface_id: str

The unique id used to identify the Elastic Network Interface, e.g. 'eni-12345'.

ipv4_associations: dict[str, list[str]]

A dictionary mapping public IP addresses on the interface to the list of private IP addresses associated with that public IP, for each public IP that is associated with the interface, e.g. {'54.0.0.1': ['172.30.0.0']}.

ipv6s: list[str]

The IPv6 addresses associated with the interface, e.g. ['2001:db8:abcd:ef00::1234'].

mac: str

The MAC address of the interface, e.g. '01:23:45:67:89:ab'.

owner_id: str

The AWS Account ID of the owner of the network interface, e.g. '123456789012'.

private_hostname: str

The interface’s local/private hostname, e.g. 'ip-172-30-0-0.eu-west-1.compute.internal'.

private_ipv4s: list[str]

The private IPv4 addresses associated with the interface, e.g. ['172.30.0.0'].

public_hostname: str | None

The interface’s public DNS (IPv4), e.g. 'ec2-54-0-0-0.compute-1.amazonaws.com'.

public_ipv4s: list[str]

The Elastic IP addresses associated with the interface, e.g. ['54.0.0.0'].

security_groups: list[str]

The names of the security groups to which the network interface belongs, e.g. ['ssh-access', 'custom-sg-1'].

security_group_ids: list[str]

The names of the security groups to which the network interface belongs, e.g. ['sg-12345678', 'sg-12345679'].

subnet_id: str

The ID of the subnet in which the interface resides, e.g. 'subnet-12345678'.

subnet_ipv4_cidr_block: str | None

The IPv4 CIDR block of the subnet in which the interface resides, or None if there is none, e.g. '172.30.0.0/24'.

subnet_ipv6_cidr_blocks: list[str]

The list of IPv6 CIDR blocks of the subnet in which the interface resides, e.g. ['2001:db8:abcd:ef00::/64']. If the subnet does not have any IPv6 CIDR blocks or the instance isn’t in a VPC, the list will be empty, e.g. [].

vpc_id: str

The ID of the VPC in which the interface resides, e.g. 'vpc-12345678'.

vpc_ipv4_cidr_block: str | None

The IPv4 CIDR block of the VPC, or None if the instance isn’t in a VPC, e.g. '172.30.0.0/16'.

vpc_ipv4_cidr_blocks: list[str]

The list of IPv4 CIDR blocks e.g. ['172.30.0.0/16']. If the interface doesn’t have any such CIDR blocks, the list will be empty.

vpc_ipv6_cidr_blocks: list[str]

The list of IPv6 CIDR blocks of the VPC in which the interface resides, e.g. ['2001:db8:abcd:ef00::/56']. If the VPC does not have any IPv6 CIDR blocks or the instance isn’t in a VPC, the list will be empty, e.g. [].