CloudWatch — Complete Guide
CloudWatch — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of AWS Cloud Tutorial on Toolliyo Academy.
On this page
AWS Cloud Tutorial · Lesson 61 of 100
CloudWatch
Core services ✓ → Projects
Projects · 2 — Deploy · ~10 min · AWS — Observability & Security
What is this?
Amazon CloudWatch collects metrics, logs, and alarms from AWS resources and applications. Dashboards visualize operational health.
Why should you care?
AwsVerse SRE dashboards track API latency, error rate, and RDS CPU on one wall during incidents.
See it live — copy this example
Run in AWS CloudShell / local AWS CLI v2, or follow the matching steps in the AWS Console (Free Tier).
aws cloudwatch put-metric-data \
--namespace AwsVerse/Payments \
--metric-data MetricName=ProcessedPayments,Value=1,Unit=Count,Dimensions=[{Name=Environment,Value=prod}]What happened?
- Publishes custom count metric to CloudWatch.
- Graph it on dashboards and alarm when anomalies occur.
Practice next
- Open CloudWatch → Metrics → create dashboard.
- Add EC2 CPU and ALB TargetResponseTime widgets.
- Create alarm on 5xx count > 10 in 5 min.
- Set log group retention to 30 days.
- Add anomaly detection alarm on error rate.
Remember
CloudWatch = metrics and logs hub. Custom metrics for business KPIs. Dashboards for incident response.
AwsVerse ops wall
CIO asks if payments are healthy now.
Outcome: Dashboard shows green SLA with live transaction rate metric.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
Sign in to ask a question or upvote helpful answers.
No questions yet — be the first to ask!
