Managing ECS Groups

An ECS group logically groups ECSs. ECSs in an ECS group comply with the same policy.

Currently, only the anti-affinity policy is supported.

This policy enables ECSs in the same ECS group to run on different hosts for improved reliability, high availability, and disaster recovery.

You can perform the following operations:

• Creating an ECS Group
• Adding an ECS to an ECS Group
  • Add an ECS to an ECS group during ECS creation.

    For details, see Step 3: Configure Advanced Settings.

  • Add an existing ECS to an ECS group.
• Removing an ECS from an ECS Group
• Deleting an ECS Group

Create an ECS group and select a policy for the group. This policy applies to all ECSs in the same group. ECS groups are independent of each other.

1. Log in to the management console.
2. Click in the upper left corner and select a region and project.
3. Under Computing, click Elastic Cloud Server.
4. In the navigation pane on the left, choose ECS Group.
5. On the ECS Group page, click Create ECS Group.
6. Enter the name of the ECS group.
7. Select a policy for the ECS group.
8. Click OK.

To improve service reliability, you can add ECSs to an ECS group so that these ECSs in this group can run on different hosts.

1. Log in to the management console.
2. Click in the upper left corner and select a region and project.
3. Under Computing, click Elastic Cloud Server.
4. In the navigation pane on the left, choose ECS Group.
5. Locate the row that contains the target ECS group and click Add ECS in the Operation column.
6. On the Add ECS page, select an ECS to be added.
7. (Optional) Stop the ECS.

   If an ECS in the Running state fails to be added to an ECS group , you can perform this step to stop the ECS.

   1. Click Stop in the Operation column.
   2. Select a stop option.
      • Stop: The ECS will be stopped normally.
      • Force stop: This operation will cause loss of unsaved data. Exercise caution when performing this operation.
   3. Click OK.

8. Click OK. The ECS is added to the ECS group.

After an ECS is removed from an ECS group, the ECS does not comply with the ECS group policy anymore.

1. Log in to the management console.
2. Click in the upper left corner and select a region and project.
3. Under Computing, click Elastic Cloud Server.
4. In the navigation pane on the left, choose ECS Group.
5. Expand the ECS group information and view the ECSs in the ECS group.
6. Locate the ECS to be removed and click Remove in the Operation column.

   Alternatively, select multiple ECSs to be removed and click Remove above the list.

7. In the displayed dialog box, click Yes.

   The ECS is removed from the ECS group.

After an ECS group is deleted, the policy does not apply to the ECSs in the ECS group anymore.

1. Log in to the management console.
2. Click in the upper left corner and select a region and project.
3. Under Computing, click Elastic Cloud Server.
4. In the navigation pane on the left, choose ECS Group.
5. Locate the ECS group to be deleted and click Delete in the Operation column.
6. In the displayed dialog box, click Yes.