- Product Introduction
- Purchase Guide
- Getting Started
- Tutorial
- Launch Configuration
- Scaling Groups
- Creating Notifications
- Expanding and Reducing Capacity
- Monitoring
- Troubleshooting
- Best Practices
- Customer Cases
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Scaling Group APIs
- ModifyDesiredCapacity
- CreateAutoScalingGroup
- CreateAutoScalingGroupFromInstance
- ModifyAutoScalingGroup
- EnableAutoScalingGroup
- DisableAutoScalingGroup
- ModifyLoadBalancers
- ModifyLoadBalancerTargetAttributes
- DetachLoadBalancers
- AttachLoadBalancers
- DescribeAutoScalingInstances
- DescribeAutoScalingGroups
- DescribeAutoScalingActivities
- DescribeAutoScalingGroupLastActivities
- DeleteAutoScalingGroup
- ScaleOutInstances
- ScaleInInstances
- DescribeAutoScalingAdvices
- Scaling Group Instances APIs
- Launch Configuration APIs
- Scheduled Action APIs
- Alarm Trigger Policy APIs
- Notification APIs
- Lifecycle Hook APIs
- Instance Refresh APIs
- Other APIs
- Data Types
- Error Codes
- FAQs
- Contact Us
- Glossary
- Product Introduction
- Purchase Guide
- Getting Started
- Tutorial
- Launch Configuration
- Scaling Groups
- Creating Notifications
- Expanding and Reducing Capacity
- Monitoring
- Troubleshooting
- Best Practices
- Customer Cases
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Scaling Group APIs
- ModifyDesiredCapacity
- CreateAutoScalingGroup
- CreateAutoScalingGroupFromInstance
- ModifyAutoScalingGroup
- EnableAutoScalingGroup
- DisableAutoScalingGroup
- ModifyLoadBalancers
- ModifyLoadBalancerTargetAttributes
- DetachLoadBalancers
- AttachLoadBalancers
- DescribeAutoScalingInstances
- DescribeAutoScalingGroups
- DescribeAutoScalingActivities
- DescribeAutoScalingGroupLastActivities
- DeleteAutoScalingGroup
- ScaleOutInstances
- ScaleInInstances
- DescribeAutoScalingAdvices
- Scaling Group Instances APIs
- Launch Configuration APIs
- Scheduled Action APIs
- Alarm Trigger Policy APIs
- Notification APIs
- Lifecycle Hook APIs
- Instance Refresh APIs
- Other APIs
- Data Types
- Error Codes
- FAQs
- Contact Us
- Glossary
Auto Scaling (AS) can detect exceptions in advance.
In some cases, such as when you have an insufficient balance or accidentally delete an image, it is impossible to create the CVMs needed for scale-out. AS can detect these exceptions in advance and send an alarm. This allows you to identify risks before scaling fails, so as to prevent losses. You can view the causes of exceptions as described below:
In the launch configuration list, if Invalid appears in the Validity column, it indicates that your launch configuration has become unavailable due to an improper operation. Hover the cursor over the status to view the detailed reason.
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