A single line command to retrieve the the secrets from a namespace and decode the values:

k8shost:~ # kubectl get secret ca-secret -n mynamespace -o json | jq -r '.data | to_entries[] | "\(.key): \(.value | @base64d)"'
ACCESS_SECRET: X7aB-52p-p2y
API_USER: PM_USER
BASE_URL: https://apiserver.example.com/api/
COMPONENT_ID: 955_18
CPU_MEM_ID: 955_17
INTERFACE_ID: 955_16
INVENTORY_ID: 955_5
RAW_ID: 955_19