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Infrastructure as Code for Node.js Environments

Prerequisites

  • Existing Elastic Beanstalk Node.js application and environment.
  • Working knowledge of CloudFormation templates and stacks.
  • Access to saved configuration management in Elastic Beanstalk.
  • Repository access for storing environment configuration files.

What You'll Build

You will capture and reuse Elastic Beanstalk environment settings with saved configurations, understand CloudFormation as the underlying provisioning engine, and define supplemental resources through .ebextensions.

flowchart TD
    A[Saved Configuration] --> B[Reusable environment settings]
    B --> C[Create or update environments]
    D[.ebextensions resources] --> E[CloudFormation resources in environment stack]
    F[AWS CDK or CloudFormation] --> G[Application and environment orchestration]

Steps

  1. Save current environment configuration from console or EB CLI.

    eb config save --cfg <saved-config-name>

  2. Store generated configuration files in source control for repeatability.

    .elasticbeanstalk/saved_configs/<saved-config-name>.cfg.yml

  3. Create a new environment from a saved configuration.

    eb create <new-env-name> --cfg <saved-config-name>

  4. Add additional CloudFormation resources via .ebextensions when needed.

    Resources:
  AppBucket:
    Type: AWS::S3::Bucket
    Properties:
      VersioningConfiguration:
        Status: Enabled

  5. Track changes and promote configurations across stages (dev, test, prod).

  6. Use AWS CDK or CloudFormation templates for higher-level environment lifecycle automation where appropriate.

  7. Standardize naming for reproducible stage environments.

    <app-name>-dev
<app-name>-test
<app-name>-prod

  8. Keep environment-specific values out of source where possible.

    • Inject secrets through managed configuration stores.
    • Keep non-secret defaults in saved configurations.
    • Document promotion procedures between stages.

Verification

  • Saved configuration file exists and captures expected option settings.
  • New environment can be created from saved config without manual re-entry.
  • .ebextensions resources appear in the environment CloudFormation stack.
  • Configuration drift is reduced between stage environments.
  • Environment names and configuration sets follow predictable patterns.

See Also

Sources