I'm using a Multibranch pipeline job to discover branches/tags/PRs and execute certain jobs. I got repos on GitHub and scan is able to discover all but not tags. I get below error. Also, when the Discover tags option is disabled in multibranch job configuration, I don't see this error and I miss the build when tags are created.
I tried to create multiple new repos but it did not help. Jenkins version: 2.150.1
Getting remote tags...
ERROR: [Sun Jan 06 16:00:21 UTC 2019] Could not fetch branches from source 3f765a8f-ee7f-4c6d-a655-f9ca3b2b25d3
org.kohsuke.github.GHException: Failed to retrieve https://repourl/branch/git/refs/tags
at org.kohsuke.github.Requester$PagingIterator.fetch(Requester.java:529)
at org.kohsuke.github.Requester$PagingIterator.hasNext(Requester.java:494)
at org.kohsuke.github.PagedIterator.fetch(PagedIterator.java:44)
at org.kohsuke.github.PagedIterator.hasNext(PagedIterator.java:32)
at org.jenkinsci.plugins.github_branch_source.GitHubSCMSource$LazyTags$1$1.hasNext(GitHubSCMSource.java:2222)
at org.jenkinsci.plugins.github_branch_source.GitHubSCMSource.retrieve(GitHubSCMSource.java:1016)
at jenkins.scm.api.SCMSource._retrieve(SCMSource.java:374)
at jenkins.scm.api.SCMSource.fetch(SCMSource.java:284)
at jenkins.branch.MultiBranchProject.computeChildren(MultiBranchProject.java:634)
at com.cloudbees.hudson.plugins.folder.computed.ComputedFolder.updateChildren(ComputedFolder.java:277)
at com.cloudbees.hudson.plugins.folder.computed.FolderComputation.run(FolderComputation.java:165)
at jenkins.branch.MultiBranchProject$BranchIndexing.run(MultiBranchProject.java:1025)
at hudson.model.ResourceController.execute(ResourceController.java:97)
at hudson.model.Executor.run(Executor.java:429)
[Sun Jan 06 16:00:21 UTC 2019] Finished branch indexing. Indexing took 0.42 sec
FATAL: Failed to recompute children of Pipelines » bl-calibration-orchestrator-v1
org.kohsuke.github.GHException: Failed to retrieve https://repourl/branch/git/refs/tags
at org.kohsuke.github.Requester$PagingIterator.fetch(Requester.java:529)
at org.kohsuke.github.Requester$PagingIterator.hasNext(Requester.java:494)
at org.kohsuke.github.PagedIterator.fetch(PagedIterator.java:44)
at org.kohsuke.github.PagedIterator.hasNext(PagedIterator.java:32)
at org.jenkinsci.plugins.github_branch_source.GitHubSCMSource$LazyTags$1$1.hasNext(GitHubSCMSource.java:2222)
at org.jenkinsci.plugins.github_branch_source.GitHubSCMSource.retrieve(GitHubSCMSource.java:1016)
at jenkins.scm.api.SCMSource._retrieve(SCMSource.java:374)
at jenkins.scm.api.SCMSource.fetch(SCMSource.java:284)
at jenkins.branch.MultiBranchProject.computeChildren(MultiBranchProject.java:634)
at com.cloudbees.hudson.plugins.folder.computed.ComputedFolder.updateChildren(ComputedFolder.java:277)
at com.cloudbees.hudson.plugins.folder.computed.FolderComputation.run(FolderComputation.java:165)
at jenkins.branch.MultiBranchProject$BranchIndexing.run(MultiBranchProject.java:1025)
at hudson.model.ResourceController.execute(ResourceController.java:97)
at hudson.model.Executor.run(Executor.java:429)
Finished: FAILURE
That looks like a recent Jenkins issue (JENKINS-52397) which is still pending:
Org Scan blows up when repository has no tags
Given a GitHub Organization Folder that has the "Discover Tags" behavior; the scan blows up on every repository that doesn't have any tags.
Workaround of adding a single tag confirmed to work
This is linked to the JENKINS/GitHub Branch Source Plugin, and is still seen in Jenkins 2.152.
From the release notes of the Jenkins GitHub Branch Source Plugin:
Version 2.4.2
Release date: 2019-01-16
* JENKINS-52397: Org Scan blows up when repository has no tags #191
* INFRA-1934: Stop publishing to jenkinsci/jenkins repo on Docker Hub
It might depend on various factors if you received those plugin already. A Jenkins version of 2.160 (2019-01-16) or higher might or might not be a safe indicator for the fixed version of the plugin being at least available at setup time.