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New to KubeDB? Please start here.

Vertical Scaling MySQL

This guide will give you an overview of how KubeDB enterprise operator updates the resources(for example Memory and RAM etc.) of the MySQL database server.

Before You Begin

How Vertical Scaling Process Works

The following diagram shows how the KubeDB enterprise operator used to update the resources of the MySQL database server. Open the image in a new tab to see the enlarged version.

Stash Backup Flow
Fig: Vertical scaling process of MySQL

The vertical scaling process consists of the following steps:

  1. At first, a user creates a MySQL cr.

  2. KubeDB community operator watches for the MySQL cr.

  3. When it finds one, it creates a StatefulSet and related necessary stuff like secret, service, etc.

  4. Then, in order to update the resources(for example CPU, Memory etc.) of the MySQL database the user creates a MySQLOpsRequest cr.

  5. KubeDB enterprise operator watches for MySQLOpsRequest.

  6. When it finds one, it halts the MySQL object so that the KubeDB community operator doesn’t perform any operation on the MySQL during the scaling process.

  7. Then the KubeDB enterprise operator will update resources of the StatefulSet replicas to reach the desired state.

  8. After successful updating of the resources of the StatefulSet’s replica, the KubeDB enterprise operator updates the MySQL object resources to reflect the updated state.

  9. After successful updating of the MySQL resources, the KubeDB enterprise operator resumes the MySQL object so that the KubeDB community operator resumes its usual operations.

In the next doc, we are going to show a step by step guide on updating resources of MySQL database using vertical scaling operation.

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