# 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.

"""

This example demonstrates the following:

- Get a list of all the cluster nodes

- Iterate through each node list item

- Add or overwrite label "foo" with the value "bar"

- Remove the label "baz"

- Return the list of node with updated labels

"""

from kubernetes import client, config

def main():

config.load_kube_config()

api_instance = client.CoreV1Api()

body = {

"metadata": {

"labels": {

"foo": "bar",

"baz": None}

}

}

# Listing the cluster nodes

node_list = api_instance.list_node()

print("%s\t\t%s" % ("NAME", "LABELS"))

# Patching the node labels

for node in node_list.items:

api_response = api_instance.patch_node(node.metadata.name, body)

print(f"{node.metadata.name}\t{node.metadata.labels}")

if __name__ == '__main__':

main()