Operations FAQ

Resource property order

Always modify resource properties in an application architecture from the outside in, because inner resource property values depend on outer resource property values. If you modify an outer resource after the initial configuration, reopen the configuration dialogs for the inner resources to synchronize the new values. For example, the correct order is: region → VPC → vSwitch → ECS instance.

ACK resource configuration

When you configure ACK resource properties, you must first connect ACK to a vSwitch. This is because ACK specifications, such as the instance and system disk types for master and worker nodes, depend on the properties of the vSwitch in a specific region and availability zone.

Resolving property validation errors

If a property validation error occurs during application deployment, use the information in the error message to update your resource configuration. These errors typically occur for two reasons: required resource parameters are missing, or communication parameters such as protocols and ports are not configured between related resources.

For example, if an error message indicates that a frontend or backend port is missing, double-click the connection line between the SLB instance and the ECS instance to configure the parameters. The system may also prompt that parameters such as listener protocol and peak bandwidth cannot be empty. In the SLB_ECS Configuration dialog box, set parameters such as frontend port (1–65535), backend port (1–65535), listener protocol, and peak bandwidth (-1 to 1000).