helm plugin update/install fails

[evgkrsk]

~ > helm plugin list                                                                                                                                                                                                                                                                                   kube minikube 13:04:22
NAME      	VERSION   	DESCRIPTION
diff      	3.2.0     	Preview helm upgrade changes as a diff
fullstatus	0.2.0     	This plugin shows the status of the resources that have been deployed through the specified helm release
helm-git  	0.11.1    	Get non-packaged Charts directly from Git.
s3        	0.10.0    	The plugin allows to use s3 protocol to upload, fetch charts and to work with repositories.
          	          	https://gi...
secrets   	3.12.0-dev	This plugin provides secrets values encryption for Helm charts secure storing

~ > helm plugin update diff                                                                                                                                                                                                                                                                            kube minikube 13:04:11
Error: unknown command "home" for "helm"
Run 'helm --help' for usage.
Downloading https://github.com/databus23/helm-diff/releases/latest/download/helm-diff-macos-amd64.tgz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   155  100   155    0     0    265      0 --:--:-- --:--:-- --:--:--   269
100     9    0     9    0     0     11      0 --:--:-- --:--:-- --:--:--     0
tar: Error opening archive: Unrecognized archive format
Failed to install helm-diff
	For support, go to https://github.com/databus23/helm-diff.
Error: Failed to update plugin diff, got error (plugin update hook for "diff" exited with error)

[mumoshu]

Thanks. It should work now.

[evgkrsk]

Upd:

~ > helm plugin install https://github.com/databus23/helm-diff                                                                                                                                                                                                                                         kube minikube 13:25:54
Error: Unable to update repository: exit status 1

~ > helm plugin install https://github.com/databus23/helm-diff --version v3.2.0                                                                                                                                                                                                                        kube minikube 13:25:57
Error: Unable to update repository: exit status 1

~ > helm plugin install https://github.com/databus23/helm-diff --version v3.3.0                                                                                                                                                                                                                        kube minikube 13:26:12
Error: Unable to update repository: exit status 1

[mumoshu]

@evgkrsk I've force-pushed v3.3.0 so perhaps your helm plugins cache is broken.

Could you run helm env to see where HELM_CACHE_HOME is located, and remove the the helm-diff git repo cache inside?

FYI, it's at ~/.cache/helm/plugins/https-github.202132.xyz-databus23-helm-diff/ for me.

[mumoshu]

In other words, what you're seeing now is more like a helm issue. Perhaps you find my comment in another place #322 (comment) helpful to see what's going on under the hood.

[evgkrsk]

Dropping helm cache helped me on local machine, but installation still fails in isolated CI environment: https://github.com/evgkrsk/kubernetes-helm/runs/4757862077

[evgkrsk]

... and reverting version to v3.2.0 fixes issue: https://github.com/evgkrsk/kubernetes-helm/runs/4757899886

[mumoshu]

@evgkrsk We already handle helm home errors so it might be due to your last error on mktemp but I'm not sure how it can fail that way.

This is where we use mktemp:

helm-diff/install-binary.sh

Lines 94 to 96 in 7464d75

	mkTempDir() {
	HELM_TMP="$(mktemp -d -t "${PROJECT_NAME}-XXXX")"
	}

Could you run it mktemp alone or check available of it in the same env as your runner and see what's happening?

[mumoshu]

3.2.0 doesn't use mktemp in the installation script so that might be the cause of the difference

https://github.com/databus23/helm-diff/blob/v3.2.0/install-binary.sh

[mumoshu]

Okay so you use alpine and alpine/busybox version of mktemp isn't compatible with your script.

# This is how our script calls mktemp
/ # mktemp -d -t foobarbaz-XXXX
mktemp: (null): Invalid argument

# This is what mktemp in busybox/alpine expects
/ # mktemp -d -t foobarbaz-XXXXXX
/tmp/foobarbaz-epMlhj

[evgkrsk]

Yep

[mumoshu]

Prepping 3.3.1 release with the possible fix

[mumoshu]

@evgkrsk 3.3.1 is now live. Would you mind giving it a shot?