Kubernetes Opaque Secret

This will be quick and to the point.

previously when we wanted to create an Opaque secret manually we would have to encode and decode the data like so:

apiVersion: v1
kind: Secret
metadata:
  name: log-level
  namespace: namespace
type: Opaque
data:
  LOG_LEVEL: ZXJyb3IK
# must encode values
# encode
#  echo "error" | base64
# ZXJyb3IK
# # decode
# echo "ZXJyb3IK==" | base64 -d
# error

Which wasn’t the end of the world, however added extra steps. In February 2022, the api was updated and the values no longer needed to be encoded/decoded. This is because of the key stringData

and can be used like so:

apiVersion: v1
kind: Secret
metadata:
  name: log-level
  namespace: example
type: Opaque
stringData:
  LOG_LEVEL: "error"

Then to apply

kubectl apply -f log-level-secret.yaml