Panic: runtime error: invalid memory address or nil pointer dereference about kubeconfig-cleanup HOT 6 CLOSED

Thank you for looking into this and fixing it

from kubeconfig-cleanup.

Is your kubeconfig file located at $HOME/.kube/config?

from kubeconfig-cleanup.

Yes, it's there.

Reading the stack trace the issue seems to be caused here:

func (m *Manager) Validate(context *clientcmdapi.Context) (bool, string) {
[...]
_, err = client.CoreV1().ConfigMaps(metav1.NamespacePublic).Get(bootstrapapi.ConfigMapClusterInfo, metav1.GetOptions{})
https://github.com/ashleyschuett/kubeconfig-cleanup/blob/master/pkg/config/config.go#L164

calls:

// CoreV1 retrieves the CoreV1Client
func (c *Clientset) CoreV1() corev1.CoreV1Interface {
	return c.coreV1
}
https://github.com/kubernetes/client-go/blob/v7.0.0/kubernetes/clientset.go#L273

Could that be caused by using incompatible client-go and K8s versions? Just speculating...

from kubeconfig-cleanup.

Full stack trace attached:

interesting:

github.com/ashleyschuett/kubeconfig-cleanup/vendor/k8s.io/client-go/tools/clientcmd.(*DirectClientConfig).ClientConfig(0xc42031c0c0, 0x0, 0x0, 0x0)
        /Users/ashley/go/src/github.com/ashleyschuett/kubeconfig-cleanup/vendor/k8s.io/client-go/tools/clientcmd/client_config.go:143 +0x273

From my understand that call for function signature func (config *DirectClientConfig) ClientConfig() (*restclient.Config, error) does not return a valid memory alloc i.e. nil.

stacktrace.txt

from kubeconfig-cleanup.

Further investigation:

The error from kubeconfigutil.ToClientSet(configFromClusterInfo) was not checked.
I added the following line:

	configFromClusterInfo.AuthInfos[context.AuthInfo] = m.getContextsUser(context)
	client, err := kubeconfigutil.ToClientSet(configFromClusterInfo)
	if err != nil {
		return false, fmt.Sprintf("error converting to clientset: %v", err)
	}

This solves the nil pointer exception and throws the following error:

Testing context's 'mgasch01-prod-context' cluster...
error converting to clientset: failed to create API client: No Auth Provider found for name "oidc"
Remove 'mgasch01-prod-context' from context (Y/n)? ^C

Btw: I had issues building from remotes/origin/HEAD -> origin/master with Glide. Go complained about incompatible types in the Validate() function. Using dep (which build dependency constraints from Glide, really neat) it worked.

from kubeconfig-cleanup.

Welcome.

Since I did not push the binary, it's probably the best to create a new binary release containing this fix.
I usually use Goreleaser as a way to automate releases.

from kubeconfig-cleanup.