_[root@~]_ _"/usr/lib/jvm/java-1.8.0/bin/java" -jar jenkins-cli.jar -s http://127.0.0.1:8080 -ssh -user "jenkins_automation" -p 53801 -i jenkins-key.pem who-am-i_
_Mar 31, 2021 12:50:15 PM io.jenkins.cli.shaded.org.apache.sshd.common.util.security.AbstractSecurityProviderRegistrar getOrCreateProvider_
_INFO: getOrCreateProvider(EdDSA) created instance of io.jenkins.cli.shaded.net.i2p.crypto.eddsa.EdDSASecurityProvider_
_Mar 31, 2021 12:50:15 PM io.jenkins.cli.shaded.org.apache.sshd.common.io.DefaultIoServiceFactoryFactory getIoServiceProvider_
_INFO: No detected/configured IoServiceFactoryFactory using Nio2ServiceFactoryFactory_
_io.jenkins.cli.shaded.org.apache.sshd.common.SshException: No more authentication methods available_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.future.AbstractSshFuture.verifyResult(AbstractSshFuture.java:126)_
 _at io.jenkins.cli.shaded.org.apache.sshd.client.future.DefaultAuthFuture.verify(DefaultAuthFuture.java:39)_
 _at io.jenkins.cli.shaded.org.apache.sshd.client.future.DefaultAuthFuture.verify(DefaultAuthFuture.java:32)_
 _at hudson.cli.SSHCLI.sshConnection(SSHCLI.java:108)_
 _at hudson.cli.CLI._main(CLI.java:285)_
 _at hudson.cli.CLI.main(CLI.java:96)_
_Caused by: io.jenkins.cli.shaded.org.apache.sshd.common.SshException: No more authentication methods available_
 _at io.jenkins.cli.shaded.org.apache.sshd.client.session.ClientUserAuthService.tryNext(ClientUserAuthService.java:342)_
 _at io.jenkins.cli.shaded.org.apache.sshd.client.session.ClientUserAuthService.processUserAuth(ClientUserAuthService.java:277)_
 _at io.jenkins.cli.shaded.org.apache.sshd.client.session.ClientUserAuthService.process(ClientUserAuthService.java:224)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.session.helpers.AbstractSession.doHandleMessage(AbstractSession.java:502)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.session.helpers.AbstractSession.handleMessage(AbstractSession.java:428)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.session.helpers.AbstractSession.decode(AbstractSession.java:1463)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.session.helpers.AbstractSession.messageReceived(AbstractSession.java:388)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.session.helpers.AbstractSessionIoHandler.messageReceived(AbstractSessionIoHandler.java:64)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.io.nio2.Nio2Session.handleReadCycleCompletion(Nio2Session.java:358)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:335)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:332)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.io.nio2.Nio2CompletionHandler.lambda$completed$0(Nio2CompletionHandler.java:38)_
 _at java.security.AccessController.doPrivileged(Native Method)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.io.nio2.Nio2CompletionHandler.completed(Nio2CompletionHandler.java:37)_
 _at sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:126)_
 _at sun.nio.ch.Invoker.invokeDirect(Invoker.java:157)_
 _at sun.nio.ch.UnixAsynchronousSocketChannelImpl.implRead(UnixAsynchronousSocketChannelImpl.java:555)_
 _at sun.nio.ch.AsynchronousSocketChannelImpl.read(AsynchronousSocketChannelImpl.java:277)_
 _at sun.nio.ch.AsynchronousSocketChannelImpl.read(AsynchronousSocketChannelImpl.java:298)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.io.nio2.Nio2Session.doReadCycle(Nio2Session.java:429)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.io.nio2.Nio2Session.handleReadCycleCompletion(Nio2Session.java:362)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:335)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:332)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.io.nio2.Nio2CompletionHandler.lambda$completed$0(Nio2CompletionHandler.java:38)_
 _at java.security.AccessController.doPrivileged(Native Method)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.io.nio2.Nio2CompletionHandler.completed(Nio2CompletionHandler.java:37)_
 _at sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:126)_
 _at sun.nio.ch.Invoker.invokeDirect(Invoker.java:157)_
 _at sun.nio.ch.UnixAsynchronousSocketChannelImpl.implRead(UnixAsynchronousSocketChannelImpl.java:555)_
 _at sun.nio.ch.AsynchronousSocketChannelImpl.read(AsynchronousSocketChannelImpl.java:277)_
 _at sun.nio.ch.AsynchronousSocketChannelImpl.read(AsynchronousSocketChannelImpl.java:298)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.io.nio2.Nio2Session.doReadCycle(Nio2Session.java:429)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.io.nio2.Nio2Session.handleReadCycleCompletion(Nio2Session.java:362)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:335)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:332)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.io.nio2.Nio2CompletionHandler.lambda$completed$0(Nio2CompletionHandler.java:38)_
 _at java.security.AccessController.doPrivileged(Native Method)_
 _at io.jenkins.cli.shaded.org.apache.sshd.common.io.nio2.Nio2CompletionHandler.completed(Nio2CompletionHandler.java:37)_
 _at sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:126)_
 _at sun.nio.ch.Invoker$2.run(Invoker.java:218)_
 _at sun.nio.ch.AsynchronousChannelGroupImpl$1.run(AsynchronousChannelGroupImpl.java:112)_
 _at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)_
 _at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)_
 _at java.lang.Thread.run(Thread.java:748)_

  The credential are correct as the following works fine:

_[root@~]# ssh -i jenkins-key.pem -p 53801 jenkins_automation@localhost who-am-i_
_Authenticated as: jenkins_automation_
_Authorities:_
 _authenticated_
 _system_users_
 _ROLE_SYSTEM_USERS_