forked from kubernetes-client/python
-
Notifications
You must be signed in to change notification settings - Fork 0
/
deployment_examples.py
96 lines (76 loc) · 3.1 KB
/
deployment_examples.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
# Copyright 2016 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.
from os import path
import yaml
from kubernetes import client, config
DEPLOYMENT_NAME = "nginx-deployment"
def create_deployment_object():
# Configureate Pod template container
container = client.V1Container(
name="nginx",
image="nginx:1.15.4",
ports=[client.V1ContainerPort(container_port=80)])
# Create and configurate a spec section
template = client.V1PodTemplateSpec(
metadata=client.V1ObjectMeta(labels={"app": "nginx"}),
spec=client.V1PodSpec(containers=[container]))
# Create the specification of deployment
spec = client.AppsV1beta1DeploymentSpec(
replicas=3,
template=template)
# Instantiate the deployment object
deployment = client.AppsV1beta1Deployment(
api_version="apps/v1beta1",
kind="Deployment",
metadata=client.V1ObjectMeta(name=DEPLOYMENT_NAME),
spec=spec)
return deployment
def create_deployment(api_instance, deployment):
# Create deployement
api_response = api_instance.create_namespaced_deployment(
body=deployment,
namespace="default")
print("Deployment created. status='%s'" % str(api_response.status))
def update_deployment(api_instance, deployment):
# Update container image
deployment.spec.template.spec.containers[0].image = "nginx:1.16.0"
# Update the deployment
api_response = api_instance.patch_namespaced_deployment(
name=DEPLOYMENT_NAME,
namespace="default",
body=deployment)
print("Deployment updated. status='%s'" % str(api_response.status))
def delete_deployment(api_instance):
# Delete deployment
api_response = api_instance.delete_namespaced_deployment(
name=DEPLOYMENT_NAME,
namespace="default",
body=client.V1DeleteOptions(
propagation_policy='Foreground',
grace_period_seconds=5))
print("Deployment deleted. status='%s'" % str(api_response.status))
def main():
# Configs can be set in Configuration class directly or using helper
# utility. If no argument provided, the config will be loaded from
# default location.
config.load_kube_config()
apps_v1beta1 = client.AppsV1beta1Api()
# Create a deployment object with client-python API. The deployment we
# created is same as the `nginx-deployment.yaml` in the /examples folder.
deployment = create_deployment_object()
create_deployment(apps_v1beta1, deployment)
update_deployment(apps_v1beta1, deployment)
delete_deployment(apps_v1beta1)
if __name__ == '__main__':
main()