This page provides an overview of cloning the backup of your AlloyDB Omni database cluster in either a standalone server environment or a Kubernetes environment.
When you clone your database cluster, only the data from the primary instance of the source database cluster is cloned to the primary instance of the target database cluster or server.
To take a backup of your AlloyDB Omni database
cluster, you configure the backup location in the
BackupPlan
resource manifest file. When you want to clone the backup, you can only clone it
to a database cluster that is in the same Kubernetes cluster and uses the same
namespace as the source database cluster. For more information about creating a
backup, see Back up and restore in
Kubernetes.
If you want to clone the backup to another database cluster in either a
standalone server environment or a Kubernetes environment especially for
disaster recovery, then you must use the pgBackRest configurations and
commands. The backup and restore method for both environments uses pgBackRest
as the underlying backup and restore solution.
The following terms are used throughout the subsequent sections that explain how to clone a database cluster:
- Source database cluster
- An AlloyDB Omni database cluster where the backup exists. This backup is cloned on other database clusters in a standalone server environment or a Kubernetes environment.
- Target database cluster
- A database cluster in the Kubernetes environment where the backup of the source database cluster is cloned.
- Target server
- A database cluster in the standalone server environment where the backup of the source database cluster is cloned.
Supported backup and restore combinations
Because the backup of your AlloyDB Omni database cluster can be stored either locally or in a Cloud Storage bucket, the following backup and restore combinations are supported:
- Clone a database cluster in Kubernetes using a Cloud Storage backup
- Clone a database cluster in Kubernetes using a local backup
- Clone a database cluster in a single server using a Cloud Storage backup
- Clone a database cluster in a single server using a local backup