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Reconfiguring TLS of ProxySQL

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

Before You Begin

How Reconfiguring ProxySQL TLS Configuration Process Works

The following diagram shows how KubeDB Enterprise operator reconfigures TLS of a ProxySQL. Open the image in a new tab to see the enlarged version.

  Reconfiguring TLS process of ProxySQL
Fig: Reconfiguring TLS process of ProxySQL

The Reconfiguring ProxySQL TLS process consists of the following steps:

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

  2. KubeDB Community operator watches the ProxySQL CRO.

  3. When the operator finds a ProxySQL 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 ProxySQL, the user creates a ProxySQLOpsRequest CR with desired information.

  5. KubeDB Enterprise operator watches the ProxySQLOpsRequest CR.

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

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

  8. Then the KubeDB Enterprise operator will restart all the Pods of the server so that they restart with the new TLS configuration defined in the ProxySQLOpsRequest CR.

  9. After the successful reconfiguring of the ProxySQL TLS, the KubeDB Enterprise operator resumes the ProxySQL object so that the KubeDB Community 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 ProxySQL using ProxySQLOpsRequest CRD.