Dear all,
Today we talk about quick upgrading and rolling back a single component in Dorado V6.
Single-component upgrade process
1. Invoke the pre_upgrade interface of the component of the source version to check the current upgrade conditions (including the component status, service status, or component version, etc.).
2. Invoke the upgrade interface provided by the component of the new version to upgrade the component. Decompress, replace, and restart components.
3. Invoke the check_status interface provided by the component of the new version to check the status of the restarted component.
The rear component status is normal.
4. Invoke the online interface provided by the component of the new version to start and bring some services online.

Single-component rollback process
1. Invoke the pre_rollback interface of the component of the new version to check the current upgrade rollback conditions.
2. Invoke the rollback interface provided by the component of the source version to roll back the component.
3. Invoke the check_status interface provided by the component of the source version to check the status of the restarted component.
The rear component status is normal.
4. Invoke the online interface provided by the component of the earlier version to start and bring some services online.

Thanks.
