การสร้างแดชบอร์ด CloudWatch

A CloudWatch dashboard is a customizable home page that gathers graphs and widgets from many services into a single view.

Instead of hunting through console pages, your whole system health is on one screen.

Dashboards are built from widgets:

• Line and stacked area for time series
• Number for a single latest value
• Gauge for thresholds
• Text for notes and links

You can create a dashboard in the console or via the CLI by supplying a JSON body that describes the widgets.

The dashboard body is JSON with a widgets array. Each widget has a type, position, and properties such as which metrics to plot.

The real power of dashboards is mixing metrics. Put EC2 CPU, RDS connections, Lambda errors, and ELB latency side by side to correlate issues quickly.

CloudWatch metric math lets you compute new series, like error rate as errors divided by requests, or summing metrics across instances.

You can embed alarm widgets on a dashboard so you instantly see which alarms are in ALARM, OK, or INSUFFICIENT_DATA state.

Dashboards let you set a shared time range (last hour, day, week) and an auto-refresh interval, so the whole board updates together.

You can share a dashboard with people who do not have an AWS account using a shared dashboard link, ideal for stakeholders and on-call summaries.

Dashboards can display metrics from multiple accounts and regions, giving a true single pane of glass for organizations with many AWS accounts.

Good dashboards:

• Lead with the most critical metrics at the top
• Group related widgets together
• Use text widgets to explain context
• Include alarm status for fast triage

Test your dashboard knowledge.

You learned to build CloudWatch dashboards:

• Combine widgets from many services
• Use metric math for derived series
• Embed alarm status for triage
• Share boards across accounts, regions, and stakeholders

A good dashboard turns scattered metrics into actionable insight.