Linux Foundation projects use Nexus Repository Manager 2 to store Maven and Java artifacts, with Jenkins jobs publishing releases and snapshots. For existing LF infrastructure, the key pieces are the repository layout, Maven and Jenkins configuration, and project-specific deployment permissions. Nexus Repository 2 support ended on June 30, 2025, so this is legacy operating guidance—not a reason to start a new Nexus 2 deployment. Plan migration to Nexus Repository 3.
What Nexus 2 does in LF project infrastructure
Nexus Repository Manager 2 serves as an artifact repository: it stores release and snapshot artifacts and provides access to dependencies. In the Linux Foundation Release Engineering model, Jenkins is the publication interface. A Jenkins job can publish on a schedule or when requested, depending on its Jenkins Job Builder configuration. The guide describes this architecture for LF projects; it does not establish the current configuration or status of any particular project.
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Repository endpoints follow this pattern: https://nexus.example.org/content/repositories/<repo-name>. Replace the host and repository name with the values for the project’s Nexus instance and target repository.
Which repository should Maven use?
Nexus 2 repositories differ by whether they store artifacts directly, aggregate other repositories, or proxy an upstream source. Choose based on whether the project is publishing, consuming, or staging artifacts.
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| Repository | Type and purpose | Operational distinction |
|---|---|---|
| Releases | Hosted repository for official release artifacts. | Redeployment is disabled to prevent overwriting released versions. |
| Snapshots | Hosted repository for Maven snapshot builds. | Snapshot versions use the -SNAPSHOT suffix. |
| Public Repositories | Group repository providing a combined view of release repositories. | Use a group view when consumers need an aggregated endpoint rather than a specific hosted repository. |
| Staging Repositories | Group repository providing a combined staging view. | If two staging repositories contain the same version, the oldest staging repository takes precedence. |
| Proxy | Repository that proxies artifacts from an upstream repository. | It provides access to upstream artifacts through Nexus rather than holding project releases directly. |
The LF guide’s Maven example references releases, staging, and snapshots repositories through URLs based on ${project.nexus.url}/content/repositories/.... The exact repository name and project endpoint must match the Nexus instance’s configuration.
How to configure Maven and Jenkins publication
Reference repository URLs in the Maven project
In the Gerrit repository’s pom.xml, configure the relevant repository IDs and URLs for releases, staging, and snapshots. The URL pattern is ${project.nexus.url}/content/repositories/<repo-name>. Keep the repository IDs consistent with the server entries Jenkins uses; Maven relies on those IDs to match repository configuration with credentials.
Provide matching server entries to Jenkins
Jenkins settings files contain a ServerId entry for each Nexus 2 repository the job can access. Configure the IDs required by the job and ensure the corresponding credentials have the intended repository privileges. Jenkins then runs the Maven publication workflow on the schedule or trigger defined by the job’s Jenkins Job Builder configuration.
Browsing and deployment are separate permissions. The LF guide says ordinary users can browse repositories and proxies anonymously, while LF administrators and release-engineering staff authenticate for administrative options. A project’s CI account needs the appropriate deployment privileges to upload; anonymous read access does not grant write permission.
How LF project permissions are organized
The LF convention creates a Nexus user for each Gerrit repository and names related roles and privileges after that repository. The guide lists read, create, delete, and update privileges, along with an LF Deployment Role for deploying to Snapshots and Releases. Projects using autorelease staging may also need a Staging Deployer privilege.
Bootstrap configuration in the LF documentation includes server settings, LDAP settings, external role mapping, administrator-role assignment, disabling the default deployment account, and creating an lf-deployment role. That role combines Artifact Upload, Nexus Deployment Role, and Unpack. These are documented configuration patterns, not confirmation that a given LF project currently uses them.
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Automate repository setup with lftools
lftools nexus create repo automates creation of Nexus repository resources from configuration files. The repository configuration describes the project hierarchy, passwords, global privileges, and additional privileges. A separate settings configuration supplies the Nexus URL and administrative credentials.
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The command can create repositories, users, roles, privileges, and repository-target patterns. Those target patterns restrict the GroupIds a project may publish, providing a way to limit deployment scope. Use the configuration and credentials appropriate to the intended project and instance; the documented command is an automation mechanism, not a substitute for reviewing access policy.
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Upload failures and the SNI hostname mismatch
The LF infrastructure documentation records an upload failure involving nexus-staging-maven-plugin and an SSL hostname mismatch. The documented cause is that Nexus 2 does not support Server Name Indication (SNI). It describes cURL as a workaround that can ignore the certificate mismatch, but that should not be treated as a generally safe fix: ignoring certificate validation weakens connection security. Review the applicable security policy and environment before using such a workaround, and favor a supported endpoint or migration path where available.
Nexus 2 support ended: plan the Nexus 3 migration
Sonatype’s support notice says Nexus Repository 2 entered extended maintenance and that support for all Nexus Repository 2 versions ended on June 30, 2025: Sonatype Support: Nexus Repository 2 Extended Maintenance. The Nexus Repository 2 Help manual likewise gives June 30, 2025 as the sunset date and recommends migration to Nexus Repository 3: Nexus Repository 2 Help.
For teams maintaining an existing LF Nexus 2 integration, preserve the operational details needed to understand current Maven endpoints, Jenkins server IDs, repository types, and deployment roles while planning migration. The cited guidance establishes the end-of-support date and direction to migrate; it does not specify a migration procedure, compatibility mapping, or the status of an individual LF project. Confirm those details against the project’s current Nexus and release-engineering configuration before changing publication workflows.
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