AWS for Backend Developers (EC2, S3, RDS, Lambda) · 课时

构建 CloudWatch 仪表板

学习如何创建、自定义和共享 CloudWatch 仪表板，在一个位置可视化 AWS 基础设施各处的指标。

构建 CloudWatch 仪表板 是 CoddyKit 上的免费 AWS for Backend Developers (EC2, S3, RDS, Lambda) 课时。这是第 4 节课，共 4 节。你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。这是 AWS for Backend Developers (EC2, S3, RDS, Lambda) 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 AWS for Backend Developers (EC2, S3, RDS, Lambda) 课程共包含 4 节课。

本课时的部分内容尚未翻译，以英文显示。

What Is a Dashboard?

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.

Widgets Overview

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

Creating a Dashboard

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

aws cloudwatch put-dashboard \
  --dashboard-name Prod-Overview \
  --dashboard-body file://dashboard.json

Dashboard JSON Structure

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

{
  'widgets': [
    {
      'type': 'metric',
      'properties': {
        'metrics': [['AWS/EC2','CPUUtilization']],
        'title': 'EC2 CPU'
      }
    }
  ]
}

Combining Multiple Services

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.

Math Expressions

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

Adding Alarm Status

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

Time Range and Auto Refresh

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

Sharing Dashboards

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.

Cross-Account and Cross-Region

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

Dashboard Best Practices

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

Quick Check

Test your dashboard knowledge.

Recap

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.

常见问题解答

「构建 CloudWatch 仪表板」课时是免费的吗？

是的 — 「构建 CloudWatch 仪表板」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 AWS for Backend Developers (EC2, S3, RDS, Lambda) 课程的其余内容，请升级到 CoddyKit PRO。 AWS for Backend Developers (EC2, S3, RDS, Lambda) 课程共包含 4 节课。

「构建 CloudWatch 仪表板」这节课中我会学到什么？

学习如何创建、自定义和共享 CloudWatch 仪表板，在一个位置可视化 AWS 基础设施各处的指标。你通过在浏览器中直接运行的动手代码来练习 AWS for Backend Developers (EC2, S3, RDS, Lambda)，全天候 AI 导师会在你学习这节课的过程中回答你的问题。

学习 AWS for Backend Developers (EC2, S3, RDS, Lambda) 需要有经验吗？

无需任何先前经验。CoddyKit 上的 AWS for Backend Developers (EC2, S3, RDS, Lambda) 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。这是第 4 节课，共 4 节。

「构建 CloudWatch 仪表板」课时需要多长时间？

大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。

我能在这节 AWS for Backend Developers (EC2, S3, RDS, Lambda) 课中编写并运行代码吗？

能。每节 AWS for Backend Developers (EC2, S3, RDS, Lambda) 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。

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