25099304ca
This P.S. does the following: 1) Eliminate the usage of 'subprocess', which can be a form of security risk (though unlikely in our case as we are using it in a controlled manner) 2) Make use of Kubernetes Python Client instead of 'kubectl' Change-Id: Ia5374e52e9ff567c00a4a65b534c9b53def232c8
58 lines
2.0 KiB
Python
58 lines
2.0 KiB
Python
# Copyright 2017 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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import logging
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from airflow.exceptions import AirflowException
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from airflow.models import BaseOperator
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from airflow.plugins_manager import AirflowPlugin
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from airflow.utils.decorators import apply_defaults
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from kubernetes import client, config
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class K8sHealthCheckOperator(BaseOperator):
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"""
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Performs basic Kubernetes Health Check
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"""
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@apply_defaults
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def __init__(self,
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*args, **kwargs):
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super(K8sHealthCheckOperator, self).__init__(*args, **kwargs)
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def execute(self, context):
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logging.info("Running Basic Kubernetes Cluster Health Check:")
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# Note that we are using 'in_cluster_config'
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config.load_incluster_config()
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v1 = client.CoreV1Api()
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ret = v1.list_pod_for_all_namespaces(watch=False)
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# Loop through items to get the status of all pods
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# Note that the current health check only checks to
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# ensure that all pods are either in 'Succeeded' or
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# in 'Running' state. The k8s health checks can be
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# expanded in future if need be.
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for i in ret.items:
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logging.info("%s is in %s state", i.metadata.name,
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i.status.phase)
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if i.status.phase not in ['Succeeded', 'Running']:
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raise AirflowException("Kubernetes Health Checks Failed!")
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class K8sHealthCheckPlugin(AirflowPlugin):
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name = "k8s_healthcheck_plugin"
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operators = [K8sHealthCheckOperator]
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