Logs

Logs & Events

Retrieve application logs, stream live logs, enable CloudWatch logging, and view environment events using the EB CLI.

When to Use

• View application logs
• Stream logs in real time
• Enable CloudWatch log integration
• Check environment events
• Find platform-specific log file paths

When NOT to Use

• Interpreting errors and fixing issues → use troubleshoot skill
• Checking health status → use status skill
• Deploying code → use deploy skill

Recent Logs

eb logs
eb logs <env-name>
eb logs --all            # All log files
eb logs --stream         # Stream logs live (Ctrl+C to stop)
eb logs --zip            # Download complete log bundle
eb logs --instance <id>  # Logs from specific instance
eb logs -g <log-group>   # Specific CloudWatch log group

Enable CloudWatch Logs

eb logs --cloudwatch-logs enable

Environment Events

eb events
eb events --follow       # Follow events live

Platform-Specific Log Paths (via SSH)

AL2/AL2023 (current platforms):

• Node.js: /var/log/web.stdout.log, /var/log/web.stderr.log
• Python: /var/log/web.stdout.log, /var/log/web.stderr.log
• Docker: /var/log/eb-docker/containers/eb-current-app/*.log
• Java (Corretto): /var/log/web.stdout.log, /var/log/web.stderr.log
• Java (Tomcat): /var/log/tomcat/catalina.out
• Go: /var/log/web.stdout.log, /var/log/web.stderr.log
• Ruby: /var/log/web.stdout.log, /var/log/web.stderr.log
• PHP: /var/log/web.stdout.log, /var/log/web.stderr.log
• .NET: /var/log/web.stdout.log, /var/log/web.stderr.log

Common EB platform logs:

• /var/log/eb-engine.log — EB deployment engine log
• /var/log/eb-hooks.log — Platform hook execution log
• /var/log/nginx/access.log, /var/log/nginx/error.log — Reverse proxy logs

Composability

• Diagnose issues from logs: Use troubleshoot skill
• Check environment health: Use status skill
• Deploy code: Use deploy skill

Additional Resources

• Health States

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