com.jcraft.jsch.JSchException: SSH_MSG_DISCONNECT: 2 Too many authentication failures for git for Bamboo with Stash repo
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Symptoms
Bamboo is unable to check out code from a Stash repository.
The following appears in the atlassian-bamboo.log:
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com.atlassian.bamboo.repository.RepositoryException: java.lang.RuntimeException: com.atlassian.bamboo.plugins.stash.repository.StashRepositoryException: com.atlassian.bamboo.repository.RepositoryException: : ssh://git@stash/wid/dashboard.git: SSH_MSG_DISCONNECT: 2 Too many authentication failures for git
at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectChangesSinceLastBuildInternal(DefaultChangeDetectionManager.java:398)
at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectChangesSinceRevisions(DefaultChangeDetectionManager.java:286)
at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectChangesSinceRevisions(DefaultChangeDetectionManager.java:185)
at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectAllChangesSinceLastBuild(DefaultChangeDetectionManager.java:142)
at com.atlassian.bamboo.v2.trigger.ManualBuildDetectionAction.performDelayedChangeDetection(ManualBuildDetectionAction.java:173)
at com.atlassian.bamboo.chains.ChainExecutionManagerImpl$2.getChainState(ChainExecutionManagerImpl.java:209)
at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.tryStartChainState(ChainExecutionManagerImpl.java:262)
at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.delayedStart(ChainExecutionManagerImpl.java:198)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:304)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at com.sun.proxy.$Proxy97.delayedStart(Unknown Source)
at com.atlassian.bamboo.plan.PlanExecutionManagerImpl$1$1$1$1.run(PlanExecutionManagerImpl.java:405)
at com.atlassian.bamboo.util.CacheAwareness.whileReadingThroughCaches(CacheAwareness.java:85)
at com.atlassian.bamboo.util.CacheAwareness.whileReadingThroughCaches(CacheAwareness.java:102)
at com.atlassian.bamboo.plan.PlanExecutionManagerImpl$1$1$1.call(PlanExecutionManagerImpl.java:400)
at com.atlassian.bamboo.plan.PlanExecutionManagerImpl$1$1$1.call(PlanExecutionManagerImpl.java:394)
at com.atlassian.util.concurrent.ManagedLocks$ManagedLockImpl.withLock(ManagedLocks.java:312)
at com.atlassian.bamboo.plan.PlanExecutionLockServiceImpl.lock(PlanExecutionLockServiceImpl.java:85)
at com.atlassian.bamboo.plan.PlanExecutionManagerImpl.doWithProcessLock(PlanExecutionManagerImpl.java:761)
at com.atlassian.bamboo.plan.PlanExecutionManagerImpl.access$200(PlanExecutionManagerImpl.java:126)
at com.atlassian.bamboo.plan.PlanExecutionManagerImpl$1$1.run(PlanExecutionManagerImpl.java:388)
at com.atlassian.bamboo.utils.BambooRunnables$1.run(BambooRunnables.java:49)
at com.atlassian.bamboo.security.ImpersonationHelper.runWith(ImpersonationHelper.java:31)
at com.atlassian.bamboo.security.ImpersonationHelper.runWithSystemAuthority(ImpersonationHelper.java:20)
at com.atlassian.bamboo.security.ImpersonationHelper$1.run(ImpersonationHelper.java:52)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: com.atlassian.bamboo.plugins.stash.repository.StashRepositoryException: com.atlassian.bamboo.repository.RepositoryException: : ssh://git@stash/wid/dashboard.git: SSH_MSG_DISCONNECT: 2 Too many authentication failures for git
at com.atlassian.bamboo.executor.RetryingTaskExecutor.rerun(RetryingTaskExecutor.java:132)
at com.atlassian.bamboo.executor.RetryingTaskExecutor.runTask(RetryingTaskExecutor.java:88)
at com.atlassian.bamboo.executor.RetryingTaskExecutor.retry(RetryingTaskExecutor.java:191)
at com.atlassian.bamboo.executor.RetryingTaskExecutor.retry(RetryingTaskExecutor.java:176)
at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectionChangesWithRetry(DefaultChangeDetectionManager.java:501)
at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager.collectChangesSinceLastBuildInternal(DefaultChangeDetectionManager.java:358)
... 33 more
Caused by: com.atlassian.bamboo.plugins.stash.repository.StashRepositoryException: com.atlassian.bamboo.repository.RepositoryException: : ssh://git@stash/wid/dashboard.git: SSH_MSG_DISCONNECT: 2 Too many authentication failures for git
at com.atlassian.bamboo.plugins.stash.StashRepository.collectChangesSinceLastBuild(StashRepository.java:487)
at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager$2.call(DefaultChangeDetectionManager.java:506)
at com.atlassian.bamboo.v2.trigger.DefaultChangeDetectionManager$2.call(DefaultChangeDetectionManager.java:502)
at com.atlassian.bamboo.executor.RetryingTaskExecutor.rerun(RetryingTaskExecutor.java:108)
... 38 more
Caused by: com.atlassian.bamboo.repository.RepositoryException: : ssh://git@stash/wid/dashboard.git: SSH_MSG_DISCONNECT: 2 Too many authentication failures for git
at com.atlassian.bamboo.plugins.git.JGitOperationHelper.obtainLatestRevision(JGitOperationHelper.java:431)
at com.atlassian.bamboo.plugins.git.GitRepository.collectChangesSinceLastBuild(GitRepository.java:225)
at com.atlassian.bamboo.plugins.git.GitRepository.collectChangesSinceLastBuild(GitRepository.java:213)
at com.atlassian.bamboo.plugins.stash.StashRepository.collectChangesSinceLastBuild(StashRepository.java:483)
... 41 more
Caused by: org.eclipse.jgit.errors.TransportException: ssh://git@stash/wid/dashboard.git: SSH_MSG_DISCONNECT: 2 Too many authentication failures for git
at org.eclipse.jgit.transport.JschConfigSessionFactory.getSession(JschConfigSessionFactory.java:138)
at org.eclipse.jgit.transport.SshTransport.getSession(SshTransport.java:121)
at org.eclipse.jgit.transport.TransportGitSsh$SshFetchConnection.<init>(TransportGitSsh.java:248)
at org.eclipse.jgit.transport.TransportGitSsh.openFetch(TransportGitSsh.java:147)
at com.atlassian.bamboo.plugins.git.JGitOperationHelper.withFetchConnection(JGitOperationHelper.java:892)
at com.atlassian.bamboo.plugins.git.JGitOperationHelper.obtainLatestRevision(JGitOperationHelper.java:407)
... 44 more
Caused by: com.jcraft.jsch.JSchException: SSH_MSG_DISCONNECT: 2 Too many authentication failures for git
at com.jcraft.jsch.Session.read(Session.java:987)
at com.jcraft.jsch.UserAuthPassword.start(UserAuthPassword.java:91)
at com.jcraft.jsch.Session.connect(Session.java:463)
at org.eclipse.jgit.transport.JschConfigSessionFactory.getSession(JschConfigSessionFactory.java:128)
... 49 moreCause
Bamboo is attempting to connect on the wrong SSH port for Stash (22) instead of the default (7999) or custom set one in Stash.
Resolution
Log into Stash as an Admin
Visit Administration > Server Settings
Make sure the "SSH base URL" is blank or set to the proper port, otherwise it'll default to SSH port 22
ℹ️ Please note that this SSH Base URL may be set to something other than default if a route/proxy has been put in place to route the requests to the proper Stash SSH port
Updated on April 8, 2025
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