Batch Changing OSs

Scenarios

Change OSs of ECS instances on COC.

Precautions

If there are instances that are not stopped, select Stop now.

If no instance is stopped, submit the task.

Procedure

1. Log in to COC.
2. In the navigation pane on the left, choose Resource O&M > Resource Batch Operations, and click Change OS in ECS Operations.
3. On the Change OS page, click Add.
   Figure 1 Changing OSs
   

4. Select Batch Policy.
   • Automatic: The selected hosts are automatically divided into multiple batches based on the preset rule.
   • Manual: You can manually create multiple batches and add instances to each batch as required.
   • No batch: All hosts to be executed are in the same batch.

5. Set Suspension Policy.
   

   • You can set the execution success rate. When the number of failed hosts meet the number calculated based on the suspension threshold, the service ticket status become abnormal and the service ticket will stop being executed.
   • The value range is from 0 to 100 and can be set to one decimal place.

6. Specify Image .
7. Set the login mode.
   Login mode:

   • Password: You can use the original ECS password or enter the new one.
   • Password pair: You can select a key pair in Key Pair Service .
   • Reset password: Before logging in to the ECS, reset the password.

8. Click Submit.
   Figure 2 Changing OSs
   

9. In the Confirm Execution dialog box, click OK.
   Figure 3 Confirming the execution
   

10. View the execution result.
    Figure 4 Execution result
    

11. If the execution result is abnormal, you can click the Retry button in the Operation column or the Batch Retry button above the list to re-execute the failed one or more tasks. You can also click the Cancel button in the Operation column or Batch Cancel button above the list to skip one or more abnormal tasks.
    Figure 5 Canceling or retrying batch tasks