I'm trying to get the value of a node annotation with kubernetes python client.
This code print all the annotations for nodes with etcd nodes :
#!/usr/bin/python
from kubernetes import client, config
def main():
config.load_kube_config("./backup_kubeconfig_prod")
label_selector = 'node-role.kubernetes.io/etcd'
v1 = client.CoreV1Api()
print("Listing nodes with their IPs:")
ret = v1.list_node(watch=False, label_selector=label_selector)
for i in ret.items:
print(i.metadata.annotations)
if __name__ == '__main__':
main()
Output example :
{'flannel.alpha.coreos.com/kube-subnet-manager': 'true', 'flannel.alpha.coreos.com/backend-type': 'vxlan', 'flannel.alpha.coreos.com/backend-data': '{"VtepMAC":"96:70:f6:ab:4f:30"}', 'rke.cattle.io/internal-ip': '1.2.3.4', 'volumes.kubernetes.io/controller-managed-attach-detach': 'true', 'flannel.alpha.coreos.com/public-ip': '1.2.3.4', 'rke.cattle.io/external-ip': '1.2.3.4', 'node.alpha.kubernetes.io/ttl': '0'}
How can I print the value of flannel.alpha.coreos.com/public-ip
for example ?
Data in i.metadata.annotations
are dictionary type.
You can print the value of the key flannel.alpha.coreos.com/public-ip
using:
print(i.metadata.annotations["flannel.alpha.coreos.com/public-ip"])