K8s Secrets

YAML file with kind: Secret also note stringData section

apiVersion: v1
kind: Secret
metadata:
  name: <secret-name>
stringData:
  <key1>: <value1>
  <key2>: <value2>

kubectl apply -f <secret.yaml>

Then to use in Pod as an environment variable

...
spec:
  ...
  env:
    - name: MY_PASSWORD
    valueFrom:
      secretKeyRef: <secret-name>
      key: <key1>
...