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DocumentationTencent Smart AdvisorOperation GuideOperation Guide to TSA - Chaotic Fault GeneratorFault Action LibraryComputeCVM Memory OOM and Disk IO Load
CVM Memory OOM and Disk IO Load
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Last updated: 2025-03-24 15:22:59
CVM Memory OOM and Disk IO Load
Last updated: 2025-03-24 15:22:59
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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

1. Log in to the Tencent Cloud Smart Advisor > Chaotic Fault Generator, go to the Experiment Management page, and click Create a New 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.
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