New to KubeDB? Please start here.

Reconfiguring TLS of Elasticsearch

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 Elasticsearch.

Before You Begin

• You should be familiar with the following KubeDB concepts:
• Elasticsearch
• ElasticsearchOpsRequest

How Reconfiguring Elasticsearch TLS Configuration Process Works

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

  

The Reconfiguring Elasticsearch TLS process consists of the following steps:

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

2. KubeDB Provisioner operator watches the Elasticsearch CRO.

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

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

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

6. When it finds a ElasticsearchOpsRequest CR, it pauses the Elasticsearch object which is referred from the ElasticsearchOpsRequest. So, the KubeDB Provisioner operator doesn’t perform any operations on the Elasticsearch 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 ElasticsearchOpsRequest CR.

9. After the successful reconfiguring of the Elasticsearch TLS, the KubeDB Ops-manager operator resumes the Elasticsearch 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 Elasticsearch database using ElasticsearchOpsRequest CRD.