AWS FAQ: CloudWatch

Amazon CloudWatch is a monitoring and observability service for AWS resources and applications. It collects metrics, logs, and events for insight and alerting.

🗺️ Step-by-Step Instructions:

1. Enable CloudWatch in the AWS console or CLI.
2. Create dashboards and alarms.
3. Set thresholds and automate responses.

📥 Example Input:

Metric: CPUUtilization
Threshold: 80%

🏆 Expected Output:

Alert triggered when EC2 CPU exceeds 80%.

✅ CLI Alarm Example:

aws cloudwatch put-metric-alarm --alarm-name HighCPU --metric-name CPUUtilization --namespace AWS/EC2 --statistic Average --period 300 --threshold 80 --comparison-operator GreaterThanThreshold --evaluation-periods 2 --alarm-actions arn:aws:sns:...

📘 Detailed Explanation:

• Logs: Collect logs from applications, Lambda, and ECS.
• Alarms: Trigger actions like Lambda functions or SNS alerts.
• Dashboards: Visualize data with custom panels.

🛠️ Use Cases:

• Monitoring system health and resource usage.
• Setting alerts for threshold violations.
• Logging and debugging cloud applications.