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Posted By

Syed Muhammad Kashif

Avatar Of Syed Muhammad Kashif

In the ever-evolving landscape of version control systems, AWS CodeCommit to BitBucket migration has become a strategic move for many organizations. This whitepaper provides a comprehensive, step-by-step guide to efficiently migrate your repositories and configurations, ensuring minimal disruption to your development workflow.

Understanding the Migration Landscape

Why CodeCommit to BitBucket Migration ?

    1. Enhanced collaboration features
    2. Improved CI/CD integration capabilities
    3. More flexible access control and permissions
    4. Advanced code review and pull request functionalities

Key Challenges in Migration

  1. Preserving commit history and branches
  2. Maintaining user access and permissions
  3. Updating CI/CD pipelines and integrations
  4. Minimizing downtime during transition

Step-by-Step Migration Process

Step 1: Preparation and Assessment

  1. Inventory existing CodeCommit repositories
  2. Assess repository size and complexity
  3. Identify active branches and tags
  4. Document current access permissions and integrations
Codecommit To Bitbucket Migration

Step 2: Setting Up BitBucket Environment

  1. Create a BitBucket account or organization
  2. Set up project structure in BitBucket
  3. Configure user access and permissions
Codecommit To Bitbucket Migration

Step 3: Repository Migration

  1. Clone CodeCommit repository locally
				
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git clone --mirror https://git-codecommit.REGION.amazonaws.com/v1/repos/REPO_NAME

				
			
Codecommit To Bitbucket Migration

2.  Push to BitBucket repository

				
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cd REPO_NAME.git
git push --mirror https://USERNAME@bitbucket.org/WORKSPACE/REPO_NAME.git

				
			
Codecommit To Bitbucket Migration

3. Verify repository content in BitBucket

Codecommit To Bitbucket Migration

Step 4: Migrating Branches and Tags

1. Push all branches to BitBucket

				
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git push origin --all

				
			

2. Push all tags

				
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git push origin --tags

				
			

Step 5: Updating CI/CD Configurations

  1. Update build triggers to point to Bitbucket repositories.
  2. Modify deployment scripts with new repository URLs
  3. Update webhook configurations for integrations

Step 6: Access Control and Permissions

  1. Map CodeCommit IAM roles to BitBucket user groups
  2. Set up branch permissions in BitBucket
  3. Configure repository access levels for teams

Step 7: Testing and Verification

  1. Clone repositories from BitBucket to verify content
  2. Test CI/CD pipelines with sample commits
  3. Verify user access and permissions

Addressing Common Migration Challenges

Challenge 1: Large Repository Size

Solution: Use Git LFS (Large File Storage) for handling large files and consider using BitBucket’s import feature for repositories exceeding 2GB.

Challenge 2: Complex Branch Structures

Solution: Utilize BitBucket’s branch management features to recreate and enforce branch policies similar to CodeCommit’s.

Challenge 3: Webhook and Integration Migration

Solution: Manually recreate webhooks in BitBucket and update integration configurations to point to new repository URLs.

Challenge 4: User Access Transition

Solution: Implement a phased migration approach, maintaining parallel access to both systems during transition.

Best Practices for Successful Migration

  1. Conduct a thorough pre-migration analysis
  2. Create a detailed migration plan with rollback procedures
  3. Perform a trial migration with a non-critical repository
  4. Communicate clearly with all stakeholders throughout the process
  5. Provide training on BitBucket features to development teams

Frequently Asked Questions

  1. Q: How long does a typical CodeCommit to BitBucket migration take? A: The duration varies based on repository size and complexity, but typically ranges from a few hours to several days for large-scale migrations.
  2. Q: Can we maintain our existing branching strategy after migration? A: Yes, BitBucket supports various branching strategies and can be configured to match your current workflow.
  3. Q: How do we handle sensitive information during migration? A: Sensitive data should be removed or encrypted before migration. Consider using BitBucket’s repository secrets for storing sensitive information.
  4. Q: Can we automate the migration process for multiple repositories? A: Yes, the migration process can be automated using scripts or tools like BitBucket’s API for bulk operations.
  5. Q: How do we ensure all team members have the correct access after migration? A: We recommend creating a user access matrix before migration and systematically applying permissions in BitBucket post-migration.

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