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Possible cause: The ECS type in the AS configuration does not match the image, leading to the ECS creation failure. Handling method: Change the AS configuration for the AS group and then enable the AS group.
Possible cause: The ECS type in the AS configuration does not match the image, leading to the ECS creation failure. Handling method: Change the AS configuration for the AS group and then enable the AS group.
Auto Scaling (AS) is a service that automatically adjusts resources (Elastic Cloud Server and bandwidth resources) based on your service requirements and configured AS policies. You can specify AS policies based on service requirements.
Instance Lifecycle An ECS instance in an AS group goes through different statuses from its creation to its removal. The instance status changes as shown in Figure 1 if you have not added a lifecycle hook to the AS group.
If VM Tools are not installed on ECS instances, AS cannot obtain the memory usage, inband incoming rate, and inband outgoing rate. Parent topic: AS Policy
If VM Tools are not installed on ECS instances, AS cannot obtain the memory usage, inband incoming rate, and inband outgoing rate. Parent topic: AS Policy
Scenarios After an ECS instance is created, you need to manually initialize EVS disks attached to the instance before using them. If multiple instances are added to the AS group, you must initialize the EVS disks on each instance, which takes a while.
Scenarios After an ECS instance is created, you need to manually initialize EVS disks attached to the instance before using them. If multiple instances are added to the AS group, you must initialize the EVS disks on each instance, which takes a while.
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For details, see Elastic Cloud Server User Guide. Before using Agent monitoring metrics, make sure that the Agent has been installed on the instances in the AS group. For details, see How Do I Install the Agent on the Instances in an AS Group to Use Agent Monitoring Metrics?
In such a case, you can log in to the ECS using the image password. If you forgot the image password, use the password resetting function available on the Elastic Cloud Server page to reset the password.
In such a case, you can log in to the ECS using the image password. If you forgot the image password, use the password resetting function available on the Elastic Cloud Server page to reset the password.
If the ECS type specified in the AS configuration is only available in certain AZs used by the AS group, the ECS instances added by a scaling action are only deployed in the AZs where that ECS type is available.
AS scales resources based on ECS instance status monitored by Cloud Eye. AS Metrics ECS ECS instances added in a scaling action can be managed and maintained on the ECS console. AS automatically adjusts the number of ECS instances.
Scaling ECS Instances on Demand AS scales ECS instances for applications based on demand, improving cost management.
Verification: After the capacity expansion action is triggered, an ECS is added to the AS group. On the Instances tab, click the name of the added ECS. On the ECS details page, view the ECS flavor. If the ECS flavor is s3.small.1, the AS policy is in effect.
Will the System Bind a New EIP or an Existing One a Newly Added ECS Instance?
The increase or decrease of website traffic causes the rise or drop of the ECS CPU usage. You can configure two CPU usage alarm policies, one for increasing one ECS when the CPU usage exceeds 70% and the other for reducing one ECS when the CPU usage is less than 30%.
The increase or decrease of website traffic causes the rise or drop of the ECS CPU usage. You can configure two CPU usage alarm policies, one for increasing one ECS when the CPU usage exceeds 70% and the other for reducing one ECS when the CPU usage is less than 30%.
ECS health check: checks the ECS instance running status. If an instance is stopped or deleted, it is considered abnormal. ECS health check is the default health check mode for an AS group.
