The CI/CD Log Detective

⚡ Day 7: The CI/CD Log Detective

Goal: Use AI to instantly diagnose a failed deployment from a complex CI/CD pipeline log.

You're the developer on call, and the deployment pipeline has failed. Instead of spending hours reading through logs, let's use AI to quickly diagnose the issue.

Analyse Pipeline Failure

Use the sample log below or paste your own CI/CD pipeline logs for analysis:

CI/CD Pipeline Log

[2025-11-12 10:30:01] INFO: Starting CI/CD pipeline for project 'Feature-X-API'.
[2025-11-12 10:30:02] INFO: Authenticating with Git server... Success.
[2025-11-12 10:30:03] INFO: Cloning repository 'main' branch...
[2025-11-12 10:30:05] INFO: Clone complete.
[2025-11-12 10:30:06] INFO: Starting build stage.
[2025-11-12 10:30:07] INFO: Setting up Python environment...
[2025-11-12 10:30:08] INFO: Using Python version 3.9.
[2025-11-12 10:30:09] INFO: Reading 'requirements.txt' file.
[2025-11-12 10:30:10] INFO: Installing dependencies...
[2025-11-12 10:30:11] COMMAND: pip install -r requirements.txt
[2025-11-12 10:30:12] STDOUT: Collecting flask==2.0.1
[2025-11-12 10:30:13] STDOUT:   Downloading Flask-2.0.1-py3-none-any.whl (94 kB)
[2025-11-12 10:30:14] STDOUT: Collecting requests==2.20.0
[2025-11-12 10:30:15] STDOUT:   Downloading requests-2.20.0-py2.py3-none-any.whl (89 kB)
[2025-11-12 10:30:16] STDOUT: Collecting boto3==1.20.0
[2025-11-12 10:30:17] STDOUT:   Downloading boto3-1.20.0-py3-none-any.whl (131 kB)
[2025-11-12 10:30:18] STDOUT: Collecting newrelic==6.0.0
[2025-11-12 10:30:19] STDOUT:   Downloading newrelic-6.0.0.tar.gz (890 kB)
[2025-11-12 10:30:20] STDOUT: Collecting itsdangerous>=2.0
[2025-11-12 10:30:21] STDOUT:   Downloading itsdangerous-2.0.1-py3-none-any.whl (18 kB)
[2025-11-12 10:30:22] STDOUT: Collecting Jinja2>=3.0
[2025-11-12 10:30:23] STDOUT:   Downloading Jinja2-3.0.3-py3-none-any.whl (133 kB)
[2025-11-12 10:30:24] STDOUT: Collecting click>=7.1.2
[2025-11-12 10:30:25] STDOUT:   Downloading click-8.0.3-py3-none-any.whl (97 kB)
[2025-11-12 10:30:26] STDOUT: ERROR: newrelic 6.0.0 has requirement requests>=2.25.0, but you'll have requests 2.20.0 which is incompatible.
[2025-11-12 10:30:27] ERROR: Build failed with exit code 1.
[2025-11-12 10:30:28] ERROR: Failed to install dependencies.
[2025-11-12 10:30:29] INFO: Cleaning up build environment.
[2025-11-12 10:30:30] FATAL: Pipeline aborted.

🔍 Analyse Log in Gemini

🎯 Expected Analysis Format

Root Cause Summary:

A one-sentence explanation of what went wrong.

Problematic Log Snippet:

The specific lines showing the error (usually 5-10 lines).

Suggested Next Step:

A clear, actionable fix for the developer.

💡 Log Analysis Tips

Focus on ERROR and FATAL level messages first
Look for version conflicts in dependencies
Check for missing environment variables or configurations
Verify all required services are running

📝 Knowledge Check

What is the primary advantage of using an AI to analyse a failed CI/CD log?

A) The AI can automatically rewrite the code to fix the bug.

B) The AI can rapidly parse a huge amount of text to find the specific error, saving the developer significant time and effort.

C) The AI guarantees the deployment will succeed on the next attempt.

D) The AI can predict when a pipeline will fail in the future.