Cloud SQL for MySQL: Faster CMEK re-encryption with zero downtime
Cloud SQL for MySQL now offers significantly faster re-encryption for instances and replicas using customer-managed encryption keys (CMEKs), completing with zero downtime. This enhancement re-encrypts underlying disks in-place, eliminating the need for re-encryption backups. The update benefits users who manage their encryption keys and require efficient, uninterrupted key rotation.
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- Cloud SQL for MySQL
Cloud SQL for MySQL now supports significantly faster re-encryption of instances and replicas protected by customer-managed encryption keys (CMEKs), and re-encryption now completes with zero downtime. The steps to re-encrypt your instances and replicas are unchanged, but the operation now re-encrypts the underlying disks in-place, without creating re-encryption backups. For more information, see Re-encrypt an existing CMEK-enabled instance or replica .
https://docs.cloud.google.com/release-notes#July_29_2026
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