CODEWITHSUNDEEP
kubernetesjsonpathkubectl
navicore
navicore

Reputation: 2109

How do I extract multiple values from kubectl with jsonpath

I've found jsonpath examples for testing multiple values but not extracting multiple values.

I want to get image and name from kubectl get pods.

this gets me name kubectl get pods -o=jsonpath='{.items[*].spec.containers[*].name}' | xargs -n 1

this gets me image kubectl get pods -o=jsonpath='{.items[*].spec.containers[*].image}' | xargs -n 1

but kubectl get pods -o=jsonpath='{.items[*].spec.containers[*].[name,image}' | xargs -n 2

complains invalid array index image - is there a syntax for getting a list of node-adjacent values?

Upvotes: 34

Views: 24523

Answers (4)

flow
flow

Reputation: 21

Anyone trying the above commands on Windows will get an error message like this:

error: error parsing jsonpath {range .items[*]}{@.metadata.name}{" "}{@.spec.template.spec.containers[].image}{"\n"}{end}, unrecognized character in action: U+005C '\'

To make it work, use double quotes at the beginning and end of the JSONPath template, and single quotes for the literals, like this:

kubectl get pods -Ao jsonpath="{range .items[*]}{@.metadata.name}{' '}{@.spec.template.spec.containers[].image}{'\n'}{end}"

...as described in the kubectl reference:

Note: On Windows, you must double quote any JSONPath template that contains spaces (not single quote as shown above for bash). This in turn means that you must use a single quote or escaped double quote around any literals in the template

Upvotes: 2

Denio Junior
Denio Junior

Reputation: 21

Thanks! I had to change a little bit, but this worked for me:

#!/bin/bash

releases=$(kubectl get deployment -A --output=jsonpath='{range .items[*]}{@.metadata.namespace}{"|"}{@.metadata.name}{"\n"}{end}')

for release in $releases; do
    namespace=$( echo $release | cut -d "|" -f 1)
    deployment=$( echo $release | cut -d "|" -f 2)
    kubectl rollout restart deployments -n "${namespace}" "${deployment}"
done

Upvotes: 2

Pawan Kumar
Pawan Kumar

Reputation: 890

Use below command to get name and image:

kubectl get pods -Ao jsonpath='{range .items[*]}{@.metadata.name}{" "}{@.spec.template.spec.containers[].image}{"\n"}{end}'

It will give output like below:

name image

Upvotes: 46

Gonzalo Cao
Gonzalo Cao

Reputation: 2424

Useful command, I had to modify it a little to make it work (failed with -a flag). Also, I added a filter to app label and one more field to get: namespace, pod name, image

kubectl get pods --all-namespaces -o jsonpath='{range .items[*]}{@.metadata.namespace}{"\t"}{@.metadata.name}{"\t"}{@.spec.containers[*].image}{"\n"}{end}' -l app=nginx

Upvotes: 8

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