Background
Memory overflow and disk IO errors are common service errors that usually result in service response reduction or even service unavailability.
Experiment Implementation
Experiment Preparations
Prepare a CVM instance installed with TencentCloud Automation Tools (TAT).
Experiment Steps
Step 1: Create an Experiment
2. Click Skip and create a blank experiment. Fill in the experiment information, and select a CVM instance for the experiment objective.
Step 2: Add Actions
1. Add a Memory OOM action and fill in the corresponding parameter fields.
2. Add Disk IO load and fill in the corresponding parameter fields.
Step 3: Execute Experiment Actions
Click Execute Experiment, execute fault actions after identity verification, and check real-time instance metrics through Tencent Cloud Observability Platform (Instance Details > Monitoring) or monitoring commands.
Check Results
By checking instance memory metrics through the Tencent Cloud Observability Platform, it can be seen that data loss has occurred, which is a result of memory overflow and feedback failure. The result meets the expectations.
Check IO read-write pressure through a vmstat command.