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Reconfiguring MariaDB

This guide will give an overview on how KubeDB Enterprise operator reconfigures MariaDB.

Before You Begin

• You should be familiar with the following KubeDB concepts:
  • MariaDB
  • MariaDBOpsRequest

How Reconfiguring MariaDB Process Works

The following diagram shows how KubeDB Enterprise operator reconfigures MariaDB database components. Open the image in a new tab to see the enlarged version.

  

The Reconfiguring MariaDB process consists of the following steps:

1. At first, a user creates a MariaDB Custom Resource (CR).

2. KubeDB Community operator watches the MariaDB CR.

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

4. Then, in order to reconfigure the MariaDB standalone or cluster the user creates a MariaDBOpsRequest CR with desired information.

5. KubeDB Enterprise operator watches the MariaDBOpsRequest CR.

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

7. Then the KubeDB Enterprise operator will replace the existing configuration with the new configuration provided or merge the new configuration with the existing configuration according to the MariaDBOpsRequest CR.

8. Then the KubeDB Enterprise operator will restart the related StatefulSet Pods so that they restart with the new configuration defined in the MariaDBOpsRequest CR.

9. After the successful reconfiguring of the MariaDB, the KubeDB Enterprise operator resumes the MariaDB 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 MariaDB database components using MariaDBOpsRequest CRD.