FAQ

Instance diagnostics

• Can instance diagnostics check the historical status of an instance within a specified time period?

• Why does the diagnostic result show an abnormal health check state for a CLB instance with health checks configured? Can instance diagnostics identify the cause?

• Why can't I run further diagnostics on the backend servers of certain CLB instances?

• What are common use cases for EIP diagnostics?

Reachability analyzer

• What are the use cases for the reachability analyzer?

• Why does the reachability analyzer return "The reachability analyzer is not supported because the path has an unsupported intermediate node"?

• Why does the reachability analyzer return "The request matches the deny rule of the security group"?

Cross-account resource analysis

Yes. Enable Resource Directory first, and then enable multi-account management in the NIS console.

Traffic analysis

• Why am I unable to view data after I enable the traffic analysis feature?

• Why can't I select a transit router when enabling hybrid cloud traffic analysis for a VBR connection?

• Why can't I select a transit router when enabling inter-region traffic analysis?

• Which public IP addresses does Internet traffic analysis support?

• Why are some ECS instances missing from the Internet Traffic page after I enable Internet traffic analysis?

• Can NIS obtain real client IP addresses when WAF is enabled for SLB instances?

• Can Internet traffic analysis collect data on traffic denied by security groups?

• Why can't I view RTT on the Internet Traffic page?

• Why does traffic monitoring data in the NIS console differ from the service console?

Others

How do I deactivate NIS?

1. Log on to the NIS console.

2. In the left-side navigation pane, choose Configuration > Deactivate.

3. On the Deactivate page, select your reasons and click Deactivate NIS.