Labels and Annotations

• Labels go under metadata: in your YAML

• Simple list of key: value for identifying your resource later by selecting, grouping, or filtering for it

• Common examples include 'tier: frontend, app: api, env: prod, customer: acme.co'

• Not meant to hold complex, large or non-identifying information, which is what annotations are for

• Filter a get command by label:

  kubectl get pods -l app=nginx

• Apply only matching labels:

  kubectl apply -f myfile.yml -l app=nginx