93 lines
3.2 KiB
Python
93 lines
3.2 KiB
Python
# Copyright 2018 AT&T Intellectual Property. All other rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from airflow.models import DAG
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from airflow.operators import DrydockDestroyNodeOperator
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from airflow.operators import PromenadeCheckEtcdOperator
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from airflow.operators import PromenadeClearLabelsOperator
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from airflow.operators import PromenadeDecommissionNodeOperator
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from airflow.operators import PromenadeDrainNodeOperator
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from airflow.operators import PromenadeShutdownKubeletOperator
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from config_path import config_path
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def destroy_server(parent_dag_name, child_dag_name, args):
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"""DAG to tear down node
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The DAG will make use of the promenade and drydock operators
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to tear down a target node.
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"""
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dag = DAG(
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'{}.{}'.format(parent_dag_name, child_dag_name),
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default_args=args)
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# Drain Node
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promenade_drain_node = PromenadeDrainNodeOperator(
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task_id='promenade_drain_node',
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shipyard_conf=config_path,
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main_dag_name=parent_dag_name,
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sub_dag_name=child_dag_name,
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dag=dag)
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# Clear Labels
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promenade_clear_labels = PromenadeClearLabelsOperator(
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task_id='promenade_clear_labels',
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shipyard_conf=config_path,
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main_dag_name=parent_dag_name,
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sub_dag_name=child_dag_name,
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dag=dag)
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# Shutdown Kubelet
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promenade_shutdown_kubelet = PromenadeShutdownKubeletOperator(
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task_id='promenade_shutdown_kubelet',
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shipyard_conf=config_path,
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main_dag_name=parent_dag_name,
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sub_dag_name=child_dag_name,
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dag=dag)
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# ETCD Sanity Check
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promenade_check_etcd = PromenadeCheckEtcdOperator(
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task_id='promenade_check_etcd',
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shipyard_conf=config_path,
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main_dag_name=parent_dag_name,
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sub_dag_name=child_dag_name,
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dag=dag)
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# Power down and destroy node using DryDock
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drydock_destroy_node = DrydockDestroyNodeOperator(
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task_id='destroy_node',
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shipyard_conf=config_path,
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main_dag_name=parent_dag_name,
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sub_dag_name=child_dag_name,
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dag=dag)
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# Decommission node from Kubernetes cluster using Promenade
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promenade_decommission_node = PromenadeDecommissionNodeOperator(
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task_id='promenade_decommission_node',
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shipyard_conf=config_path,
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main_dag_name=parent_dag_name,
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sub_dag_name=child_dag_name,
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dag=dag)
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# Define dependencies
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promenade_clear_labels.set_upstream(promenade_drain_node)
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promenade_shutdown_kubelet.set_upstream(promenade_clear_labels)
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promenade_check_etcd.set_upstream(promenade_shutdown_kubelet)
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drydock_destroy_node.set_upstream(promenade_check_etcd)
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promenade_decommission_node.set_upstream(drydock_destroy_node)
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return dag
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