Revision as of 20:41, 2 July 2020

External

...
selector:
  matchLabels:
    color: blue
...

Get the namespace of the first pod from a series that has an "app=my-app" label.

kubectl get -A pods --selector=app=my-app -o jsonpath='{.items[0].metadata.namespace}'

@@ Line 2: / Line 2: @@
 * https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.14/#labelselector-v1-meta
+* https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
+* https://kubernetes.io/docs/concepts/overview/working-with-objects/field-selectors/
 =Internal=
@@ Line 14: / Line 16: @@
       color: blue
   ...
+=Query by Selector=
+Get the namespace of the first pod from a series that has an "app=my-app" label.
+<syntaxhighlight lang='bash'>
+kubectl get -A pods --selector=app=my-app -o jsonpath='{.items[0].metadata.namespace}'
+</syntaxhighlight>