kapp deploy suddenly doesn't work anymore

[ahoehma]

What steps did you take:

Yesterday I started working with kapp (nice tool! :D) in my win-10 docker-desktop-k8s ... simple setup, using lens to look into it, simple application to deploy (deployment, service, nginx-ingress, ....) nothing special so far ... And everything works well ...

kapp deploy -a "foo" -f .

I did this many many many times ... changed my yaml's, re-deployed etc.
I also deleted my app many times

kapp delete -a "foo"

Everything was fine

What happened:

BUT :D Today ... kapp deploy always fail with

"kapp: Error: error unmarshaling JSON: json: cannot unmarshal array into Go value of type map[string]interface {}"

And I have no glue why :(

Anything else you would like to add:

I removed all the things I installed with kapp yesterday

kapp list
kapp delete ...

Is there a debug/verbose mode or something?

Environment:

$kapp --version
kapp version 0.43.0

$kubectl version
Client Version: version.Info{Major:"1", Minor:"23", GitVersion:"v1.23.1", GitCommit:"86ec240af8cbd1b60bcc4c03c20da9b98005b92e", GitTreeState:"clean", BuildDate:"2021-12-16T11:41:01Z", GoVersion:"go1.17.5", Compiler:"gc", Platform:"windows/amd64"}
Server Version: version.Info{Major:"1", Minor:"22", GitVersion:"v1.22.4", GitCommit:"b695d79d4f967c403a96986f1750a35eb75e75f1", GitTreeState:"clean", BuildDate:"2021-11-17T15:42:41Z", GoVersion:"go1.16.10", Compiler:"gc", Platform:"linux/amd64"}

[ahoehma]

OMG ... Shit ... sorry ... was my fault! :)

I was in the wrong directory today ... there are no yaml's at all ... and this cause this "result".

Mayb it would be good if kapp shows a different warning if no input files at all given?

Could be rejected.

[100mik]

Glad you are enjoying kapp!
Could you share the YAML that you are trying to deploy?
It'll be a big help.

[ahoehma]

Glad you are enjoying kapp! Could you share the YAML that you are trying to deploy? It'll be a big help.

That was the problem :D I run kapp deploy with "nothing" g

[100mik]

Oh I see! I am sorry I did not notice the comment you made later.
Keep having fun with kapp 🚀
Closing this issue.

A better error message would definitely help. We will take note of this!

[100mik]

The error I get while trying to deploy an empty directory is

kapp: Error: Trying to apply empty set of resources will result in deletion of resources on cluster. Refusing to continue unless --dangerous-allow-empty-list-of-resources is specified.

I am curious about what conditions led to that error message as we would definitely want it to be more helpful 🤔

[100mik]

Is it possible that this directory had YAML files that were improperly formatted or created for some other purpose?

[ahoehma]

You are right @100mik ... there was a "EXPORT.yml" ... its just a configuration file.
So its seems I did it 100% wrong :D

[100mik]

Oops! Thanks for bringing this up.
Closing this for now, seems like Murphy's law is at play!