Kubernetes Selector Concepts: Difference between revisions
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=External= | |||
* 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= | =Internal= | ||
| Line 4: | Line 10: | ||
=Example= | =Example= | ||
<font size=-1> | |||
... | ... | ||
selector: | selector: | ||
matchLabels: | matchLabels: | ||
color: blue | color: blue | ||
... | |||
</font> | |||
=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> | |||
Latest revision as of 00:40, 6 February 2022
External
- 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
Example
...
selector:
matchLabels:
color: blue
...
Query by Selector
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}'