KubernetesClientException: JcaPEMKeyConverter is provided by BouncyCastle, an optional dependency.

[PulLa1]

Describe the bug

Exception in thread "main" io.fabric8.kubernetes.client.KubernetesClientException: JcaPEMKeyConverter is provided by BouncyCastle, an optional dependency. To use support for EC Keys you must explicitly add this dependency to classpath.
at io.fabric8.kubernetes.client.internal.CertUtils.handleECKey(CertUtils.java:164)
at io.fabric8.kubernetes.client.internal.CertUtils.loadKey(CertUtils.java:134)
at io.fabric8.kubernetes.client.internal.CertUtils.createKeyStore(CertUtils.java:112)
at io.fabric8.kubernetes.client.internal.CertUtils.createKeyStore(CertUtils.java:247)
at io.fabric8.kubernetes.client.internal.SSLUtils.keyManagers(SSLUtils.java:153)
at io.fabric8.kubernetes.client.internal.SSLUtils.keyManagers(SSLUtils.java:147)
at io.fabric8.kubernetes.client.utils.HttpClientUtils.applyCommonConfiguration(HttpClientUtils.java:204)
at io.fabric8.kubernetes.client.okhttp.OkHttpClientFactory.createHttpClient(OkHttpClientFactory.java:89)
at io.fabric8.kubernetes.client.utils.HttpClientUtils.createHttpClient(HttpClientUtils.java:164)
at io.fabric8.kubernetes.client.BaseClient.(BaseClient.java:48)
at io.fabric8.kubernetes.client.BaseClient.(BaseClient.java:40)
at io.fabric8.kubernetes.client.BaseKubernetesClient.(BaseKubernetesClient.java:151)
at io.fabric8.kubernetes.client.DefaultKubernetesClient.(DefaultKubernetesClient.java:34)
at com.yz.zk.K8sDemo.main(K8sDemo.java:17)

Fabric8 Kubernetes Client version

5.12.2

Steps to reproduce

I try to connect k3s by kubeconfig。
this is my kubectl command:

Expected behavior

public class K8sDemo {

public static void main(String[] args) {
    System.setProperty(Config.KUBERNETES_KUBECONFIG_FILE, "/myroot/.kube/k3s.yaml");
    DefaultKubernetesClient client = new DefaultKubernetesClient();
}

}

Runtime

Kubernetes (vanilla)

Kubernetes API Server version

1.22.3@latest

Environment

macOS

Fabric8 Kubernetes Client Logs

No response

Additional context

No response

[PulLa1]

Ok I found the bug：java.lang.NoClassDefFoundError: org/bouncycastle/jce/provider/BouncyCastleProvider
append maven to solve the problem：

    <dependency>
        <groupId>org.bouncycastle</groupId>
        <artifactId>bcprov-jdk15on</artifactId>
        <version>1.59</version>
    </dependency>

    <dependency>
        <groupId>org.bouncycastle</groupId>
        <artifactId>bcpkix-jdk15on</artifactId>
        <version>1.59</version>
    </dependency>

[PulLa1]

but i found the dependent in pom。

[rohanKanojia]

We need to add documentation about it. There is a pull request open that adds an FAQ about it #4237 .

Could you please review this and see if it's okay?

[stale]

This issue has been automatically marked as stale because it has not had any activity since 90 days. It will be closed if no further activity occurs within 7 days. Thank you for your contributions!

[divick]

I get the same issue when using spark-submit with k8s cluster and using the examples in the binary only distribution of spark directly downloaded from official spark repo. I am not sure where should these dependency be added? In the pom.xml for spark sources and doing a rebuild?

[stale]

This issue has been automatically marked as stale because it has not had any activity since 90 days. It will be closed if no further activity occurs within 7 days. Thank you for your contributions!

[martinwunderlich-celonis]

Hello, sorry for posting to the closed issue, but I have a related problem: Is there a way to use the fabric8 Kubernetes Client without BouncyCastle? I'm getting the following error:

io.fabric8.kubernetes.client.KubernetesClientException: JcaPEMKeyConverter is provided by BouncyCastle, an optional dependency. To use support for EC Keys you must explicitly add this dependency to classpath.

Due to restrictions in my project, I cannot add BC as a direct dependency.

[shawkins]

@martinwunderlich-celonis see #6008

[martinwunderlich-celonis]

@shawkins Thanks again. I am happy to confirm that removing the Bouncycastle library works when I upgrade the fabric8 client from 6.13.1 to 7.0-SNAPSHOT (built locally).