cmoulliard/extract-port-k8s-cluster.md

Last active November 16, 2021 08:08

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Raw

How to get the port number of the Server IP address of a k8s cluster using the info of the kubeconfig file

clusterName="kind-kind"
kubectl config view -o json | \
     jq '.clusters[] | select(.name=="'$clusterName'").cluster.server' | \
     sed -e 's,^.*:,:,g' -e 's,.*:\([0-9]*\).*,\1,g'
50211

References

Bash query to extract the URL info: https://stackoverflow.com/questions/6174220/parse-url-in-shell-script/6174447#6174447
JQ play: https://jqplay.org/
JQ Manual and doc: https://stedolan.github.io/jq/manual/