90 lines
2.7 KiB
Python
90 lines
2.7 KiB
Python
# Copyright 2021 The Kubernetes Authors.
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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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"""
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This example demonstrates the following:
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- Creation of a k8s service using dynamic-client
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- List, patch(update), delete the service
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"""
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from kubernetes import config, dynamic
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from kubernetes.client import api_client
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def main():
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# Creating a dynamic client
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client = dynamic.DynamicClient(
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api_client.ApiClient(configuration=config.load_kube_config())
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)
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# fetching the service api
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api = client.resources.get(api_version="v1", kind="Service")
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name = "frontend-service"
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service_manifest = {
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"apiVersion": "v1",
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"kind": "Service",
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"metadata": {"labels": {"name": name}, "name": name, "resourceversion": "v1"},
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"spec": {
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"ports": [
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{"name": "port", "port": 80, "protocol": "TCP", "targetPort": 80}
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],
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"selector": {"name": name},
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},
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}
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# Creating service `frontend-service` in the `default` namespace
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service = api.create(body=service_manifest, namespace="default")
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print("\n[INFO] service `frontend-service` created\n")
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# Listing service `frontend-service` in the `default` namespace
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service_created = api.get(name=name, namespace="default")
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print("%s\t%s" % ("NAMESPACE", "NAME"))
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print(
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"%s\t\t%s\n"
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% (service_created.metadata.namespace, service_created.metadata.name)
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)
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# Patching the `spec` section of the `frontend-service`
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service_manifest["spec"]["ports"] = [
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{"name": "new", "port": 8080, "protocol": "TCP", "targetPort": 8080}
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]
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service_patched = api.patch(body=service_manifest, name=name, namespace="default")
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print("\n[INFO] service `frontend-service` patched\n")
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print("%s\t%s\t\t\t%s" % ("NAMESPACE", "NAME", "PORTS"))
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print(
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"%s\t\t%s\t%s\n"
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% (
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service_patched.metadata.namespace,
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service_patched.metadata.name,
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service_patched.spec.ports,
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)
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)
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# Deleting service `frontend-service` from the `default` namespace
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service_deleted = api.delete(name=name, body={}, namespace="default")
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print("\n[INFO] service `frontend-service` deleted\n")
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if __name__ == "__main__":
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main()
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