This looks like a bug in the fabric8 Kubernetes client.

https://github.com/fabric8io/kubernetes-client/pull/1349

Looks like there is something to be done on the plugin side since bouncycastle is flagged as an optional dependency.

https://github.com/jenkinsci/kubernetes-client-api-plugin/pull/20 in 4.6.4-2

jonesbusy Are you sure your keypair is correct? This is supposed to be supported.

From the error you're providing, it looks like it fails to detect your key as an EC key and defaults to RSA which is obviously failing.

Needs stacktrace + a sample kubeconfig that is failing to be parsed.

Hi vlatombe the key/config seems correct to me, and works out of the box with kubectl.

I'm using this docker-compose file to start the K3S cluster : https://github.com/k3s-io/k3s/blob/master/docker-compose.yml

Then connect to https://server:6443 or https://localhost:6443 depending if the Jenkins is started on the same docker network or not.

Hello,

I got the same error.

When loading the Key, the key is assumed to be RSA.

same error.

Stacktrace:

java.io.IOException: Invalid DER: object is not integer

at io.fabric8.kubernetes.client.internal.PKCS1Util$Asn1Object.getInteger(PKCS1Util.java:125)

at io.fabric8.kubernetes.client.internal.PKCS1Util.next(PKCS1Util.java:55)

at io.fabric8.kubernetes.client.internal.PKCS1Util.decodePKCS1(PKCS1Util.java:46)

at io.fabric8.kubernetes.client.internal.CertUtils.handleOtherKeys(CertUtils.java:179)

at io.fabric8.kubernetes.client.internal.CertUtils.loadKey(CertUtils.java:139)

at io.fabric8.kubernetes.client.internal.CertUtils.createKeyStore(CertUtils.java:115)

at io.fabric8.kubernetes.client.internal.CertUtils.createKeyStore(CertUtils.java:251)

at io.fabric8.kubernetes.client.internal.SSLUtils.keyManagers(SSLUtils.java:128)

at io.fabric8.kubernetes.client.internal.SSLUtils.keyManagers(SSLUtils.java:122)

at io.fabric8.kubernetes.client.utils.HttpClientUtils.createHttpClient(HttpClientUtils.java:123)

Caused: io.fabric8.kubernetes.client.KubernetesClientException: An error has occurred.

at io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:64)

at io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:53)

at io.fabric8.kubernetes.client.utils.HttpClientUtils.createHttpClient(HttpClientUtils.java:228)

at io.fabric8.kubernetes.client.utils.HttpClientUtils.createHttpClient(HttpClientUtils.java:66)

at io.fabric8.kubernetes.client.BaseClient.<init>(BaseClient.java:51)

at io.fabric8.kubernetes.client.DefaultKubernetesClient.<init>(DefaultKubernetesClient.java:147)

at org.csanchez.jenkins.plugins.kubernetes.KubernetesFactoryAdapter.createClient(KubernetesFactoryAdapter.java:147)

at org.csanchez.jenkins.plugins.kubernetes.KubernetesClientProvider.createClient(KubernetesClientProvider.java:62)

at org.csanchez.jenkins.plugins.kubernetes.KubernetesCloud.connect(KubernetesCloud.java:512)

at org.csanchez.jenkins.plugins.kubernetes.KubernetesLauncher.launch(KubernetesLauncher.java:115)

at hudson.slaves.SlaveComputer.lambda$_connect$0(SlaveComputer.java:293)

at jenkins.util.ContextResettingExecutorService$2.call(ContextResettingExecutorService.java:46)

at jenkins.security.ImpersonatingExecutorService$2.call(ImpersonatingExecutorService.java:80)

at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)

at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)

at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)

at java.base/java.lang.Thread.run(Thread.java:834)

simply create a kubernetes cluster using https://k3s.io/.

use the kube file as credentials (created on master node in /etc/rancher/k3s/k3s.yaml)

and get this error.