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from datetime import datetime
from os import environ
from airflow.models.dag import DAG
from airflow.providers.amazon.aws.hooks.eks import ClusterStates, NodegroupStates
from airflow.providers.amazon.aws.operators.eks import (
EKSCreateClusterOperator,
EKSDeleteClusterOperator,
EKSPodOperator,
)
from airflow.providers.amazon.aws.sensors.eks import EKSClusterStateSensor, EKSNodegroupStateSensor
CLUSTER_NAME = environ.get('EKS_CLUSTER_NAME', 'eks-demo')
NODEGROUP_NAME = f'{CLUSTER_NAME}-nodegroup'
ROLE_ARN = environ.get('EKS_DEMO_ROLE_ARN', 'arn:aws:iam::123456789012:role/role_name')
SUBNETS = environ.get('EKS_DEMO_SUBNETS', 'subnet-12345ab subnet-67890cd').split(' ')
VPC_CONFIG = {
'subnetIds': SUBNETS,
'endpointPublicAccess': True,
'endpointPrivateAccess': False,
}
with DAG(
dag_id='example_eks_using_defaults_dag',
default_args={'cluster_name': CLUSTER_NAME},
schedule_interval=None,
start_date=datetime(2021, 1, 1),
max_active_runs=1,
tags=['example'],
) as dag:
# [START howto_operator_eks_create_cluster_with_nodegroup]
# Create an Amazon EKS cluster control plane and an EKS nodegroup compute platform in one step.
create_cluster_and_nodegroup = EKSCreateClusterOperator(
task_id='create_eks_cluster_and_nodegroup',
nodegroup_name=NODEGROUP_NAME,
cluster_role_arn=ROLE_ARN,
nodegroup_role_arn=ROLE_ARN,
# Opting to use the same ARN for the cluster and the nodegroup here,
# but a different ARN could be configured and passed if desired.
resources_vpc_config=VPC_CONFIG,
# Compute defaults to 'nodegroup' but is called out here for the purposed of the example.
compute='nodegroup',
)
# [END howto_operator_eks_create_cluster_with_nodegroup]
await_create_nodegroup = EKSNodegroupStateSensor(
task_id='wait_for_create_nodegroup',
nodegroup_name=NODEGROUP_NAME,
target_state=NodegroupStates.ACTIVE,
)
start_pod = EKSPodOperator(
task_id="run_pod",
pod_name="run_pod",
image="amazon/aws-cli:latest",
cmds=["sh", "-c", "echo Test Airflow; date"],
labels={"demo": "hello_world"},
get_logs=True,
# Delete the pod when it reaches its final state, or the execution is interrupted.
is_delete_operator_pod=True,
)
# [START howto_operator_eks_force_delete_cluster]
# An Amazon EKS cluster can not be deleted with attached resources such as nodegroups or Fargate profiles.
# Setting the `force` to `True` will delete any attached resources before deleting the cluster.
delete_all = EKSDeleteClusterOperator(task_id='delete_nodegroup_and_cluster', force_delete_compute=True)
# [END howto_operator_eks_force_delete_cluster]
await_delete_cluster = EKSClusterStateSensor(
task_id='wait_for_delete_cluster',
target_state=ClusterStates.NONEXISTENT,
)
create_cluster_and_nodegroup >> await_create_nodegroup >> start_pod >> delete_all >> await_delete_cluster