Scalability Recommendations

To verify that the Utimaco HSM integration scales seamlessly with additional application pods in the OpenShift cluster, increase the number of replicas and repeat the functional checks.

  1. Scale the Deployment.

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Scale Pods

  1. Get the list of running pods.

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List Running Pods

  1. Access one of the newly created pods and verify HSM connectivity by listing keys.

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List Objects

  1. From the new pod, perform an HTTPS connection to another pod.

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Openssl s_client connect output

  1. Successful output indicates that the new pod can securely communicate using the HSM-backed private key.

This test confirms that all newly created pods can securely connect to the Utimaco HSM using the configured PKCS#11 library, access the same cryptographic keys generated during the initial deployment, and successfully perform SSL/TLS operations demonstrating that the HSM integration scales seamlessly as additional replicas are added to the OpenShift deployment.