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Yeah - definitely a bug that this results in a panic. But it does appears this indicates some potential issue with your Pulumi program. What is the

kubeconfig

property set to in your program (and in your state file)? It is expected to be a string, but it looks like perhaps you are passing an object?

i'm passing an object, yes. it's a EKS cluster's

kubeconfig

value, exported from another stack.

I believe this is supposed to accept a string, and that in general you need to

JSON.stringify

an object if passed in here. What language are you using? I would have expected a type-error in your language even ahead of being able to reach this. All of the occurences of

kubeconfig:

in pulumi/examples show passing it a string (from various different sources), including this snippet in the

aws-ts-eks

README:

const myk8s = new k8s.Provider("myk8s", {
        kubeconfig: cluster.kubeconfig.apply(JSON.stringify),
    });

this is all typescript - and yeah, it's weird it's not caught in the type checker.

Ahh - I see, yeah

requireOutput

returns

any

. So unless you cast that explicitly into what you know it actually is - this won't get caught.

not at all, it's on my TODO backlog 😉

I have been struggling with this issue as well. I am consuming an exported

kubeconfig

from another stack and receiving a panic when the config is consumed by the

Provider

method. However, changes are applied to the stack with no other errors.

panic: interface conversion: interface {} is resource.PropertyMap, not string

exporting stack:

const clusterObj = cluster.create(controlPlaneSg, ngRole);

export const kubeconfig = clusterObj.kubeconfig;

consuming stack:

export const clusterStackRef = new pulumi.StackReference(`project/trips/${envName}`);

const clusterKubeconfig = clusterStackRef.requireOutput("kubeconfig");

const provider = new k8s.Provider("provider", { kubeconfig: clusterKubeconfig });

You need to pass a string to

k8s.Provider( { kubeconfig: ... })

. Is your exported

kubeconfig

a string or an object? We should at least have a better error here, if not accept either a string or an object.

Thanks @white-balloon-205. I am exporting the

kubeconfig

as an object. I added

JSON.stringify

but I get the same panic, even on preview.

const clusterKubeconfig = clusterStackRef.requireOutput("kubeconfig").apply(JSON.stringify);

const provider = new k8s.Provider("provider", { kubeconfig: clusterKubeconfig });

if you've ever run the stack with the object kubeconfig, you're now stuck with a bad provider in your statefile. you're going to have to edit it out & replace it with the stringified version (or something similar; that's what i did to unstick myself)

Good call @brave-ambulance-98491, manually swapping out the object for the stringified version resolved the panic ✌️