As your service develops, the service traffic might surge, service types might change, and backend services might have to be migrated. If these happen, you can change the basic information of a dedicated load balancer, such as its specifications and AZ.
Modifying Specifications
A load balancer with elastic specifications has obvious advantages over the one with fixed specifications in scaling scenarios. If your service fluctuates greatly, you can use load balancers with elastic specifications to simplify management and reduce O&M complexity.
If you use a load balancer with fixed specifications and the specifications do not match your service needs, you can upgrade the specifications to ensure stable service performance or downgrade the specifications to save costs. If your service type changes, you can also change the load balancing type of the load balancer.
On the console, you can:
- Change elastic specifications to fixed specifications, or the other way round.
- Change application load balancing to network load balancing, or the other way round.
You must keep at least one load balancing type. Before removing a load balancing type, you must delete the:
- HTTP, QUIC, and HTTPS listeners added to the application load balancer.
- TCP, TLS, and UDP listeners added to the network load balancer.
- Upgrade or downgrade the fixed specifications, for example, upgrade small I to medium I, or downgrade large I to medium I.
- Upgrading specifications does not interrupt your services.
- Downgrading specifications will temporarily disconnect services.
- New TCP/UDP/TLS connections may fail to be established.
- New HTTP/HTTPS/QUIC connections may fail to be established and some persistent connections may be interrupted.
Pay-per-Use
Billing Mode | Specification Type | Change to Elastic | Change to Fixed | Add Load Balancing Type | Remove Load Balancing Type | Upgrade Specifications | Downgrade Specifications |
|---|---|---|---|---|---|---|---|
Pay-per-use | Elastic | N/A | Supported | Supported | Supported | N/A | N/A |
Fixed | Supported | N/A | Supported | Supported | Supported | Supported |
- Log in to the management console.
- Click
in the upper left corner of the console and select a desired region and project. - Click
in the upper left corner to display Service List and choose Network > Elastic Load Balance. - On the displayed page, locate the load balancer, click More in the Operation column, and select Change Specifications.
- Select the new specifications and click Next.
- Confirm the information and click Submit.
- On the load balancer list page, check the new specifications in the Specifications column of the target dedicated load balancer.