Not able to fetch ip address of pods using Kubectl and jsonpath
If you have multiple Pods with the same label, you get a list of Pods. You have to adjust your jsonpath to -o jsonpath="{.items[*].status.podIP}" to get all the podIPs.
According to the official doc, you can add custom columns when querying a list of resources.
So you can do kubectl get pods -l app=validate -n {namespace_name} -o custom-columns=ip:.status.podIP