This topic describes how to modify the configurations of an Application Load Balancer (ALB) instance.

Change the zones where an ALB instance is deployed

Warning If you change the zones of an Internet-facing ALB instance, the EIPs and relevant fees may be changed. For more information, see EIP billing.
  1. Log on to the ALB console.
  2. In the top navigation bar, select the region where the ALB instance is deployed.
  3. On the Instances page, find the ALB instance that you want to manage, and choose More > Modify Zone/Subnet in the Actions column.
  4. In the Modify Zone/Subnet dialog box, select zones and vSwitches, and then click OK.

Upgrade a basic ALB instance

ALB instances are available in basic, standard, and WAF-enabled editions. For more information about the differences among different editions, see Functions and features.
  • Basic ALB instances can be upgraded to standard ALB instances. However, standard ALB instances cannot be downgraded to basic ALB instances.
  • Both basic and standard ALB instances can be upgraded to WAF-enabled ALB instances. However, WAF-enabled ALB instances can be downgraded only to standard ALB instances.
  • For more information about the limits and management of WAF-enabled ALB instances, see Activate and manage WAF-enabled ALB instances.

After a basic ALB instance is upgraded to a standard ALB instance, the billing rules for standard ALB instances are applied. For more information, see ALB billing rules.

  1. Log on to the ALB console.
  2. In the top navigation bar, select the region where the ALB instance is deployed.
  3. On the Instances page, find the ALB instance that you want to manage, and choose Related topics > Upgrade Edition in the Actions column.
  4. On the ALB (Pay-As-You-Go) International Site | Upgrade/Downgrade page, set Edition to Standard or WAF-enabled, and click Buy Now.
    Return to the Instances page and check whether the Edition of the ALB instance is upgraded.

Modify the maximum bandwidth

You can associate an Internet-facing ALB instance with an EIP bandwidth plan to adjust the maximum bandwidth of the ALB instance.
Note
  • If your Internet-facing ALB instance is not associated with an EIP bandwidth plan, you are charged for data transmission over the Internet based on the pay-by-data-transfer metering method. In this case, the maximum bandwidth of the ALB instance is 400 Mbit/s. The maximum bandwidth is not a guaranteed value. It indicates the upper limit of bandwidth and is used for reference only. The system does not upgrade the maximum bandwidth when workloads increase and you cannot manually change this value.
  • If your ALB instance is associated with an EIP bandwidth plan, the maximum bandwidth of the ALB instance is determined by the maximum bandwidth of the EIP bandwidth plan.
  • You can create an EIP bandwidth plan or modify the maximum bandwidth of an existing EIP bandwidth plan to meet your business requirements. To create an EIP bandwidth plan or modify the maximum bandwidth of an existing EIP bandwidth plan, log on to the EIP Bandwidth Plan console.
  1. Log on to the ALB console.
  2. In the top navigation bar, select the region where the ALB instance is deployed.
  3. On the Instances page, find the ALB instance that you want to manage and associate the ALB instance with an EIP bandwidth plan by using one of the following methods:
    • In the EIP Bandwidth Plan column, click Associate.
    • In the Actions column, choose More > Associate with EIP Bandwidth Plan.
  4. In the Associate with EIP Bandwidth Plan dialog box, select an EIP bandwidth plan and click OK.

References