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Data encryption for Azure Database for MySQL - Flexible Server by using the Azure portal

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APPLIES TO: Azure Database for MySQL - Flexible Server

This tutorial shows you how to set up and manage data encryption for Azure Database for MySQL Flexible Server.

In this tutorial, you learn how to:

  • Set data encryption for Azure Database for MySQL Flexible Server.

  • Configure data encryption for restoration.

  • Configure data encryption for replica servers.

    Note

    Azure key vault access configuration now supports two types of permission models - Azure role-based access control and Vault access policy. The tutorial describes configuring data encryption for Azure Database for MySQL Flexible Server using Vault access policy. However, you can choose to use Azure RBAC as permission model to grant access to Azure Key Vault. To do so, you need any built-in or custom role that has below three permissions and assign it through "role assignments" using Access control (IAM) tab in the keyvault: a) KeyVault/vaults/keys/wrap/action b) KeyVault/vaults/keys/unwrap/action c) KeyVault/vaults/keys/read. For Azure key vault managed HSM, you will also need to assign the "Managed HSM Crypto Service Encryption User" role assignment in RBAC.

Prerequisites

Set the proper permissions for key operations

  1. In Key Vault, select Access policies, and then select Create.

    Screenshot of Key Vault Access Policy in the Azure portal.

  2. On the Permissions tab, select the following Key permissions - Get , List , Wrap Key , Unwrap Key.

  3. On the Principal tab, select the User-assigned Managed Identity.

    Screenshot of the principal tab in the Azure portal.

  4. Select Create.

Configure customer managed key

To set up the customer managed key, perform the following steps.

  1. In the portal, navigate to your Azure Database for MySQL Flexible Server instance, and then, under Security , select Data encryption.

    Screenshot of the data encryption page.

  2. On the Data encryption page, under No identity assigned , select Change identity ,

  3. In the Select user assigned** managed identity dialog box, select the demo-umi identity, and then select Add**.

    Screenshot of selecting the demo-umi from the assigned managed identity page.

  4. To the right of Key selection method , either Select a key and specify a key vault and key pair, or select Enter a key identifier.

    Screenshot of key selection method to show user.

  5. Select Save.

Use Data encryption for restore

To use data encryption as part of a restore operation, perform the following steps.

  1. In the Azure portal, on the navigate Overview page for your server, select Restore.

    1. On the Security tab, you specify the identity and the key.

      Screenshot of overview page.

  2. Select Change identity and select the User assigned managed identity and select on Add To select the Key , you can either select a key vault and key pair or enter a key identifier

    SCreenshot of the change identity page.

Use Data encryption for replica servers

After your Azure Database for MySQL Flexible Server instance is encrypted with a customer's managed key stored in Key Vault, any newly created copy of the server is also encrypted.

  1. To configuration replication, under Settings , select Replication , and then select Add replica.

    Screenshot of the Replication page.

  2. In the Add Replica server to Azure Database for MySQL dialog box, select the appropriate Compute + storage option, and then select OK.

    Screenshot of the Compute + Storage page.

    Important

    When trying to encrypt Azure Database for MySQL Flexible Server with a customer managed key that already has a replica(s), we recommend configuring the replica(s) as well by adding the managed identity and key.

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