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Reconfiguring TLS of Hazelcast

This guide will give an overview on how KubeDB Ops-manager operator reconfigures TLS configuration i.e. add TLS, remove TLS, update issuer/cluster issuer or Certificates and rotate the certificates of Hazelcast.

Before You Begin

• You should be familiar with the following KubeDB concepts:
  • Hazelcast
  • HazelcastOpsRequest

How Reconfiguring Hazelcast TLS Configuration Process Works

The following diagram shows how KubeDB Ops-manager operator reconfigures TLS of a Hazelcast. Open the image in a new tab to see the enlarged version.

The Reconfiguring Hazelcast TLS process consists of the following steps:

1. At first, a user creates a Hazelcast Custom Resource Object (CRO).

2. KubeDB Provisioner operator watches the Hazelcast CRO.

3. When the operator finds a Hazelcast CR, it creates required number of StatefulSets and related necessary stuff like secrets, services, etc.

4. Then, in order to reconfigure the TLS configuration of the Hazelcast database the user creates a HazelcastOpsRequest CR with desired information.

5. KubeDB Ops-manager operator watches the HazelcastOpsRequest CR.

6. When it finds a HazelcastOpsRequest CR, it pauses the Hazelcast object which is referred from the HazelcastOpsRequest. So, the KubeDB Provisioner operator doesn’t perform any operations on the Hazelcast object during the reconfiguring TLS process.

7. Then the KubeDB Ops-manager operator will add, remove, update or rotate TLS configuration based on the Ops Request yaml.

8. Then the KubeDB Ops-manager operator will restart all the Pods of the database so that they restart with the new TLS configuration defined in the HazelcastOpsRequest CR.

9. After the successful reconfiguring of the Hazelcast TLS, the KubeDB Ops-manager operator resumes the Hazelcast object so that the KubeDB Provisioner operator resumes its usual operations.

In the next docs, we are going to show a step by step guide on reconfiguring TLS configuration of a Hazelcast database using HazelcastOpsRequest CRD.