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AWS CLI v1 to v2 Migration Tool Detailed

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announcement

This post details the AWS CLI v1-to-v2 Migration Tool, a standalone utility designed to help users transition from AWS CLI v1 to v2. The tool analyzes bash scripts, identifies potential behavioral differences between the two versions, and suggests or automatically applies changes to preserve v1 compatibility. It offers broader compatibility than the CLI's built-in debug mode and requires Python 3.9+. Engineers and architects managing AWS CLI scripts will benefit from this tool for a smoother upgrade process.

  • →Introduction to the AWS CLI v1-to-v2 Migration Tool
  • →Tool Capabilities and Comparison
  • →Using the Migration Tool: Installation and Analysis
  • →Handling Manual Review and Limitations
  • →Post-Migration Steps and Recommendations
Notes (5) ›
  • Introduction to the AWS CLI v1-to-v2 Migration Tool

    The AWS CLI v1-to-v2 Migration Tool aids users in upgrading from AWS CLI v1 to v2 by analyzing bash scripts for command differences and potential workflow disruptions. It can suggest changes or automatically update scripts to maintain v1 behavior.

  • Tool Capabilities and Comparison

    The migration tool offers broader compatibility than AWS CLI v1's Upgrade Debug Mode and operates independently of the CLI installation. It helps identify breaking changes and resolve compatibility issues, guiding users through the transition.

  • Using the Migration Tool: Installation and Analysis

    Users must first install the migration tool, which requires Python 3.9+ and pip. The tool can then be run in interactive mode to analyze bash scripts, flagging commands that may need modification and suggesting fixes, such as adding specific flags to preserve v1 behavior.

  • Handling Manual Review and Limitations

    While the tool automates many fixes, some complex scenarios, like parameters stored in runtime variables, require manual review. Users are directed to the AWS CLI v2 Migration Guide for a comprehensive list of breaking changes and guidance on manual adjustments.

  • Post-Migration Steps and Recommendations

    After using the migration tool and completing any necessary manual reviews, users can proceed with upgrading to AWS CLI v2. The tool can be uninstalled if no longer needed. Customers are reminded that the tool aids the process but does not guarantee perfect behavior parity.

Read the original announcement →

https://aws.amazon.com/blogs/developer/upgrading-aws-cli-from-v1-to-v2-using-the-migration-tool/

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