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# 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()
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