withCredentials sshUserPrivateKey in Jenkins failed auth fail - jenkins

Question

I used Jenkinsfile in Linux to do SSH to Windows server,
Here is my Jenkinsfile:
pipeline {
agent any
tools { nodejs "node" }
environment {
HOST = "${IP_ADDRESS}"
}
stages {
stage("Remote SSH") {
steps {
script {
withCredentials([sshUserPrivateKey(credentialsId: 'build-server-id-rsa', keyFileVariable: 'key')]) {
def remote = [name: "${HOST}", host: "${HOST}", user: "jenkins", allowAnyHosts: true, identityFile: key]
sshCommand remote: remote, sudo: true, command: "npm install"
}
}
}
}
}
}
However, I kept getting errors about auth fail:
com.jcraft.jsch.JSchException: Auth fail
at com.jcraft.jsch.Session.connect(Session.java:519)
at com.jcraft.jsch.Session.connect(Session.java:183)
at com.jcraft.jsch.Session$connect$1.call(Unknown Source)
at org.hidetake.groovy.ssh.connection.ConnectionManager.connectInternal(ConnectionManager.groovy:107)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:384)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1022)
at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:69)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:190)
at org.hidetake.groovy.ssh.connection.ConnectionManager$_connectInternal_closure1.doCall(ConnectionManager.groovy:85)
at org.hidetake.groovy.ssh.connection.ConnectionManager$_connectInternal_closure1.doCall(ConnectionManager.groovy)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:294)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1022)
at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:42)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:117)
at org.hidetake.groovy.ssh.util.Utility.retry(Utility.groovy:52)
at org.hidetake.groovy.ssh.util.Utility$retry.callStatic(Unknown Source)
at org.hidetake.groovy.ssh.connection.ConnectionManager.connectInternal(ConnectionManager.groovy:83)
at org.hidetake.groovy.ssh.connection.ConnectionManager.connectInternal(ConnectionManager.groovy)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite$PogoCachedMethodSiteNoUnwrapNoCoerce.invoke(PogoMetaMethodSite.java:210)
at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.callCurrent(PogoMetaMethodSite.java:59)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:166)
at org.hidetake.groovy.ssh.connection.ConnectionManager.connect(ConnectionManager.groovy:59)
at org.hidetake.groovy.ssh.connection.ConnectionManager$connect.call(Unknown Source)
at org.hidetake.groovy.ssh.session.SessionTask.wetRun(SessionTask.groovy:61)
at org.hidetake.groovy.ssh.session.SessionTask.call(SessionTask.groovy:48)
at java_util_concurrent_Callable$call.call(Unknown Source)
at org.hidetake.groovy.ssh.core.Service.run(Service.groovy:81)
at org.hidetake.groovy.ssh.core.Service$run$0.call(Unknown Source)
at org.jenkinsci.plugins.sshsteps.SSHService.executeCommand(SSHService.groovy:177)
at org.jenkinsci.plugins.sshsteps.steps.CommandStep$Execution$CommandCallable.execute(CommandStep.java:84)
at org.jenkinsci.plugins.sshsteps.util.SSHMasterToSlaveCallable.call(SSHMasterToSlaveCallable.java:32)
at hudson.remoting.LocalChannel.call(LocalChannel.java:47)
at org.jenkinsci.plugins.sshsteps.steps.CommandStep$Execution.run(CommandStep.java:72)
at org.jenkinsci.plugins.sshsteps.util.SSHStepExecution.lambda$start$0(SSHStepExecution.java:84)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:834)
Update 1. include the top of the jenkins job execution page:
Started by user Admin
Running in Durability level: MAX_SURVIVABILITY
[Pipeline] Start of Pipeline
[Pipeline] node
Running on Jenkins in /var/lib/jenkins/workspace/testing
[Pipeline] {
[Pipeline] withEnv
[Pipeline] {
[Pipeline] stage
[Pipeline] { (Declarative: Tool Install)
[Pipeline] tool
[Pipeline] envVarsForTool
[Pipeline] }
[Pipeline] // stage
[Pipeline] withEnv
[Pipeline] {
[Pipeline] stage
[Pipeline] { (Remote SSH)
[Pipeline] tool
[Pipeline] envVarsForTool
[Pipeline] withEnv

Answer 1

Check first if that same SSH session is possible by doing a regular ssh manually from that same Linux server to the same Windows server, using the account which is running Jenkins.
ssh -Tv remoteUser#remoteServer
Make sure, for testing, that your private key does not have a passphrase, in order to check if this is an ssh agent issue or not.