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troubleshooting-application-failures

Diagnose application failures by finding relevant CloudWatch logs and examining error patterns and stack traces. Follow clues into related AWS configuration, identify likely causes, and produce prioritized recommendations for fixing the problem.

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Troubleshoots failing applications by discovering and analyzing CloudWatch log groups to identify error patterns, root causes, and actionable solutions. Use when an application is experiencing failures and log-based diagnosis is needed.

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适用场景

  • Investigate application failures using CloudWatch logs
  • Find recurring errors and stack traces
  • Check timeout and permission settings behind errors
  • Prioritize fixes based on investigation findings

包含的文件(2)

  • SKILL.md1.7 KB
  • references/application-failure-troubleshooting.md16.7 KB

SKILL.md(原文)

安装前可以查看交给 AI 代理的指令内容。

Application Failure Troubleshooting

Overview

Domain expertise for diagnosing application failures through CloudWatch log analysis. Discovers relevant log groups, searches for error patterns and stack traces, performs root cause analysis, and generates prioritized remediation recommendations.

Logs are where the investigation starts, not its boundary. When the logs point at a timeout, throttle, retry or permission problem, read the configuration that sets it, for example the API Gateway integration timeout, the queue's visibility timeout, or the function timeout and event source mapping. Read-only access normally includes these Describe and Get calls.

Troubleshoot a failing application

To diagnose and resolve application failures using CloudWatch logs, follow the procedure exactly. See Application failure troubleshooting procedure.

Troubleshooting

No log groups found

Ask the user for specific log group names. Common patterns: /aws/lambda/function-name, /aws/apigateway/api-name, or custom application log groups.

Access denied errors

Verify AWS credentials have logs:DescribeLogGroups, logs:DescribeLogStreams, logs:StartQuery, and logs:GetQueryResults permissions.

Query timeouts

Reduce the time window or limit results. Large log groups may require multiple smaller queries.

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