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# Copyright 2019 The Kubernetes Authors.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

"""

Creates deployment, service, and ingress objects. The ingress allows external

network access to the cluster.

"""

from kubernetes import client, config

def create_deployment(apps_v1_api):

container = client.V1Container(

name="deployment",

image="gcr.io/google-appengine/fluentd-logger",

image_pull_policy="Never",

ports=[client.V1ContainerPort(container_port=5678)],

)

# Template

template = client.V1PodTemplateSpec(

metadata=client.V1ObjectMeta(labels={"app": "deployment"}),

spec=client.V1PodSpec(containers=[container]))

# Spec

spec = client.V1DeploymentSpec(

replicas=1,

selector=client.V1LabelSelector(

match_labels={"app": "deployment"}

),

template=template)

# Deployment

deployment = client.V1Deployment(

api_version="apps/v1",

kind="Deployment",

metadata=client.V1ObjectMeta(name="deployment"),

spec=spec)

# Creation of the Deployment in specified namespace

# (Can replace "default" with a namespace you may have created)

apps_v1_api.create_namespaced_deployment(

namespace="default", body=deployment

)

def create_service():

core_v1_api = client.CoreV1Api()

body = client.V1Service(

api_version="v1",

kind="Service",

metadata=client.V1ObjectMeta(

name="service-example"

),

spec=client.V1ServiceSpec(

selector={"app": "deployment"},

ports=[client.V1ServicePort(

port=5678,

target_port=5678

)]

)

)

# Creation of the Deployment in specified namespace

# (Can replace "default" with a namespace you may have created)

core_v1_api.create_namespaced_service(namespace="default", body=body)

def create_ingress(networking_v1_api):

body = client.V1Ingress(

api_version="networking.k8s.io/v1",

kind="Ingress",

metadata=client.V1ObjectMeta(name="ingress-example", annotations={

"nginx.ingress.kubernetes.io/rewrite-target": "/"

}),

spec=client.V1IngressSpec(

rules=[client.V1IngressRule(

host="example.com",

http=client.V1HTTPIngressRuleValue(

paths=[client.V1HTTPIngressPath(

path="/",

path_type="Exact",

backend=client.V1IngressBackend(

service=client.V1IngressServiceBackend(

port=client.V1ServiceBackendPort(

number=5678,

),

name="service-example")

)

)]

)

)

]

)

)

# Creation of the Deployment in specified namespace

# (Can replace "default" with a namespace you may have created)

networking_v1_api.create_namespaced_ingress(

namespace="default",

body=body

)

def main():

# Fetching and loading local Kubernetes Information

config.load_kube_config()

apps_v1_api = client.AppsV1Api()

networking_v1_api = client.NetworkingV1Api()

create_deployment(apps_v1_api)

create_service()

create_ingress(networking_v1_api)

if __name__ == "__main__":

main()