Migration Process

Applications can be migrated between Kubernetes clusters managed by Huawei Cloud UCS in the same geographical region to meet management requirements such as better resource utilization and application upgrade. Figure 1 shows the migration process.

Figure 1 Migration process

The process is as follows:

1. Cluster evaluation

   In this phase, you will evaluate the status of the source cluster to determine the type of the destination cluster. UCS kspider can automatically collect information about the source cluster, including the Kubernetes version, cluster scale, workload, and storage, and provide you with information about the recommended destination cluster. For details, see Cluster Evaluation.

2. Storage migration

   In this phase, you will migrate the EVS disk data to the destination AZ. For details, see Storage Migration.

3. Application backup

   In this phase, you will back up applications in the source AZ cluster. UCS k8clone can automatically collect Kubernetes metadata and save it as a compressed package to the local host to back up applications in the cluster. For details, see Application Backup.

4. Application migration

   In this phase, you will migrate applications from the source AZ cluster to the destination AZ cluster by restoring backup data. For details, see Application Migration.