Editing Kubernetes selectors

* https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
* https://kubernetes.io/docs/concepts/overview/working-with-objects/field-selectors/

* <code>[[kind: Deployment]], [[kind: Service]]</code> (Services without selectors) 


== Examples ==
* <code>[[kubectl get pods]] [[--selector]]=app=YOUR_APP</code>

* <code>[[kubectl get pods]] [[--selector]]=app=YOUR_APP -o=[[jsonpath]]='{.items[0].metadata.name}'</code>

* <code>[[kubectl get pods]] [[--field-selector]] [[status.]]phase=Running</code> <ref>https://kubernetes.io/docs/concepts/overview/working-with-objects/field-selectors/</ref>

 [[selector:]]

 [[app=]]elasticsearch-master
 [[chart=]]elasticsearch
 [[release]]=elasticsearch-prod


 spec:
   [[podSelector]]:
     [[matchLabels:]]
       app: elasticsearch-master


 {{PDB example}}


 kind: [[AWSNodeTemplate]]
 spec:
   [[subnetSelector]]:
     [[karpenter.sh/discovery]]: ${CLUSTER_NAME}
   securityGroupSelector:
     karpenter.sh/discovery: ${CLUSTER_NAME}

== Related ==
* <code>[[kubectl set selector]]</code>
* [[Kubernetes services]]
* [[CKA v1.21: Understand how to use Labels, Selector and Annotations]]
* <code>0/2 nodes are available: 1 Too many pods, 1 nodes(s) [[didn't match Pod's node affinity/selector]]</code>

== See also ==
* {{Kubernetes selectors}}
* {{Kubernetes labels}}

[[Category:K8s]]