Post

JSON PATH

JSON PATH — practical walkthrough with examples.

Posted Updated
Preview Image
By Jan Toth
1 min read

These kubectl commands demonstrate how to use JSONPath expressions to extract specific fields from Kubernetes resources. The first example uses custom columns to display deployment details, and the second extracts internal IP addresses of all nodes.

1
2
3

kubectl  get deploy  -o custom-columns=DEPLOYMENT:.metadata.name,CONTAINER_IMAGE:.spec.template.spec.containers[*].image,READY_REPLICAS:.status.readyReplicas,NAMESPACE:.metadata.namespace --sort-by=.metadata.name > /opt/admin2406_data

kubectl  get nodes -o jsonpath="{range .items[*]}{.status.addresses[?(@.type=='InternalIP')].address}{end}" >  /root/CKA/node_ips
DevOps
json path
This post is licensed under CC BY 4.0 by the author.