How to Handle the Abnormal Instance Lock Mechanism?
Action execution failed, prompting that the current instance is being injected with faults by other actions
To prevent the inaccurate observation of instance behavior after injecting the same type of fault into the same instance, the platform has implemented an instance lock mechanism. This ensures that only a single fault action can be executed on the same instance at any given time, with other actions being excluded. However, the platform also considers that some actions do not interfere with each other and do not need to compete for the same instance lock. Therefore, the platform distinguishes lock types based on the action type. For example, CPU-related fault actions and memory-related fault actions are allowed to execute simultaneously, but actions of the same type cannot be executed at the same time.
What Are Common Issues with CVM?
Network failure action execution failed, prompting the message Error: Exclusivity flag on, cannot modify.
The TC rules issued for this fault conflict with the existing rules, making it impossible to overwrite the current rules. You can check if there are any previous experiment actions that were not properly recovered, or modify the configuration parameters to forcefully overwrite the existing rules.
Failed to execute IO Hang action, prompting that the operating system acquisition failed
The user's operating system does not support the execution of this action. Currently, the platform supports the following system versions: CentOS 7.2 and later, Debian 8.2 and later, Ubuntu 16.0.4 and later, and TencentOS.
What Are Common Issues with Redis?
Failed to execute primary-secondary switchover action, prompting that the instance does not exist cross AZ replicas and primary-secondary switchover cannot be executed
The instance is upgraded to support cross-availability zone deployment, but no cross-availability zone nodes are present, so Redis cannot perform the primary-secondary switch. You need to go to the Redis instance details and add replicas in other availability zones before you can simulate the primary-secondary switch.