Migrate from Nexus 3 to RepoFlow

Overview

Most Nexus Repository 3 migrations are straightforward. The main pitfalls are group endpoints, upstream proxy behavior, and older clients that still point at Nexus. This guide uses a safe plan and references the RepoFlow CLI migration flow for the transfer step.

RepoFlow CLI migration supported package types

The RepoFlow CLI migration flow currently supports migrating these package types from Nexus 3:

• npm
• PyPI
• Maven
• Go
• Helm

Need help migrating a different package type? Contact us and we can help you migrate, or provide a custom migration script. You can also email hello@repoflow.io.

Open RepoFlow CLI migration docs

Why migrate to RepoFlow

• Consolidate package types, manage multiple package types in one platform.
• Improve reliability, proxy and cache upstream registries with remote repositories.
• Choose your deployment, use managed cloud or self hosted deployments.

Migration steps

1. Audit repositories and endpoints: Inventory hosted, proxy, and group repositories, then map them to the teams and CI pipelines that use them.
2. Design the target layout in RepoFlow: Create local, remote, and virtual repositories that match your intended structure and decide how clients should consume them.
3. Dry run a representative repo: Migrate a smaller repo first using the RepoFlow CLI migration flow, then validate with a clean build in CI.
4. Plan the cutover window: Choose a short window to freeze publishing during the final sync, and communicate the timing to teams.
5. Cut over and validate: Run the final sync, update CI and developer endpoints, then run your validation pipelines.
6. Monitor and decommission: Keep Nexus read only while you watch for missing package and auth issues, then retire it safely.