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
|
# Copyright 2021 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.
"""
This example demonstrates the creation, listing & deletion of a namespaced replication controller using dynamic-client.
"""
from kubernetes import config, dynamic
from kubernetes.client import api_client
def main():
# Creating a dynamic client
client = dynamic.DynamicClient(
api_client.ApiClient(configuration=config.load_kube_config())
)
# fetching the replication controller api
api = client.resources.get(api_version="v1", kind="ReplicationController")
name = "frontend-replication-controller"
replication_controller_manifest = {
"apiVersion": "v1",
"kind": "ReplicationController",
"metadata": {"labels": {"name": name}, "name": name},
"spec": {
"replicas": 2,
"selector": {"name": name},
"template": {
"metadata": {"labels": {"name": name}},
"spec": {
"containers": [
{
"image": "nginx",
"name": "nginx",
"ports": [{"containerPort": 80, "protocol": "TCP"}],
}
]
},
},
},
}
# Creating replication-controller `frontend-replication-controller` in the `default` namespace
replication_controller = api.create(
body=replication_controller_manifest, namespace="default"
)
print("\n[INFO] replication-controller `frontend-replication-controller` created\n")
# Listing replication-controllers in the `default` namespace
replication_controller_created = api.get(name=name, namespace="default")
print("%s\t%s\t\t\t\t\t%s" % ("NAMESPACE", "NAME", "REPLICAS"))
print(
"%s\t\t%s\t\t%s\n"
% (
replication_controller_created.metadata.namespace,
replication_controller_created.metadata.name,
replication_controller_created.spec.replicas,
)
)
# Deleting replication-controller `frontend-service` from the `default` namespace
replication_controller_deleted = api.delete(name=name, body={}, namespace="default")
print("[INFO] replication-controller `frontend-replication-controller` deleted\n")
if __name__ == "__main__":
main()
|
