I would like to use kubectl to print out all key-value pairs in my Secrets. I cannot figure out how to do this in one line with the -o --jsonpath flag or by piping into jq. I could certainly make a script to do this but I feel there must be a better way, given that the kubernetes GUI is pretty straightforward and liberal when it comes to letting you view Secrets.

Say I create secret like so:

kubectl create secret generic testsecret --from-literal=key1=val1 --from-literal=key2=val2

Now I can run kubectl get secret testsecret -o json to get something like:

{
    "apiVersion": "v1",
    "data": {
        "key1": "dmFsMQ==",
        "key2": "dmFsMg=="
    },
    ...
}

I can do something like

kubectl get secret testsecret -o jsonpath='{.data}'

or

kubectl get secret testsecret -o json | jq '.data'

to get my key-value pairs in non-list format then I'd have to base64 --decode the values.

What is the easiest way to get a clean list of all my key-value pairs? Bonus points for doing this across all Secrets (as opposed to just one specific one, as I did here).