Upgrade AWS CLI from v1 to v2 using upgrade debug mode
Developer Tools Blog
This article explains how to use AWS CLI v1's upgrade debug mode to safely migrate from v1 to v2 by identifying breaking changes before upgrading.
- Upgrade debug mode detects v1 features with breaking changes in v2
- Requires AWS CLI v1 version 1.44.0 or higher
- Enable via AWS_CLI_UPGRADE_DEBUG_MODE environment variable or --v2-debug flag
- Warnings provide guidance and links to mitigation strategies
- Configure settings like cli_binary_format to maintain v1 behavior in v2
- Manually review breaking changes list after automatic detection
- Feature has limitations and doesn't detect all breaking changes
Upgrade debug mode provides a systematic approach to prepare workflows for AWS CLI v2 migration, reducing risk of command failures or resource misconfiguration.
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