When I create Multibranch Pipeline and add a git source (which requires a private key to authenticate) branch indexing doesn't work and throws following exception:
java.lang.IllegalStateException: Cannot open session, connection is not authenticated.
at com.trilead.ssh2.Connection.openSession(Connection.java:1127)
at org.jenkinsci.plugins.gitclient.trilead.TrileadSession.exec(TrileadSession.java:32)
at org.eclipse.jgit.transport.TransportGitSsh$SshFetchConnection.<init>(TransportGitSsh.java:262)
at org.eclipse.jgit.transport.TransportGitSsh.openFetch(TransportGitSsh.java:161)
at org.eclipse.jgit.transport.FetchProcess.executeImp(FetchProcess.java:136)
at org.eclipse.jgit.transport.FetchProcess.execute(FetchProcess.java:122)
at org.eclipse.jgit.transport.Transport.fetch(Transport.java:1138)
at org.eclipse.jgit.api.FetchCommand.call(FetchCommand.java:130)
at org.jenkinsci.plugins.gitclient.JGitAPIImpl.fetch(JGitAPIImpl.java:672)
at jenkins.plugins.git.AbstractGitSCMSource.retrieve(AbstractGitSCMSource.java:171)
at jenkins.scm.api.SCMSource.fetch(SCMSource.java:146)
at jenkins.branch.MultiBranchProject.computeChildren(MultiBranchProject.java:296)
at com.cloudbees.hudson.plugins.folder.computed.ComputedFolder.updateChildren(ComputedFolder.java:151)
at com.cloudbees.hudson.plugins.folder.computed.FolderComputation.run(FolderComputation.java:110)
at hudson.model.ResourceController.execute(ResourceController.java:98)
at hudson.model.Executor.run(Executor.java:410)
It looks like jgit is used by default, but I don't have it in "Manage Jenkins" I have only command line git, which should be used.