Dieser Knoten ist offline geschaltet ist, weil Jenkins Fehler beim starten der slave-agent auf ihn

Ich bin mir nicht sicher, was die richtigen Schritte sind für die Konfiguration des Jenkins-master-build/deploy diese Aufträge an einen neuen Sklaven, und wie die neue slave, aber es gibt einen Fehler. Zum Beispiel, ich muss nichts installieren auf den neuen Sklaven, oder haben irgendeine Art von setup/config? & ich bin der Konfiguration auf Ubuntu OS.

just before slave node1 gets launched ...
    executing pre-launch scripts ...
    [06/25/15 13:06:55] [SSH] Opening SSH connection to 192.168.4.153:22.
    ERROR: Server rejected the 1 private key(s) for jenkins (credentialId:fd3affc2-25a4-4b24-9e21-275badb8b6d9/method:publickey)
    ERROR: Failed to authenticate as jenkins with credential=fd3affc2-25a4-4b24-9e21-275badb8b6d9
    java.io.IOException: Publickey authentication failed.
        at com.trilead.ssh2.auth.AuthenticationManager.authenticatePublicKey(AuthenticationManager.java:315)
        at com.trilead.ssh2.Connection.authenticateWithPublicKey(Connection.java:467)
        at com.cloudbees.jenkins.plugins.sshcredentials.impl.TrileadSSHPublicKeyAuthenticator.doAuthenticate(TrileadSSHPublicKeyAuthenticator.java:109)
        at com.cloudbees.jenkins.plugins.sshcredentials.SSHAuthenticator.authenticate(SSHAuthenticator.java:408)
        at com.cloudbees.jenkins.plugins.sshcredentials.SSHAuthenticator.authenticate(SSHAuthenticator.java:428)
        at hudson.plugins.sshslaves.SSHLauncher.openConnection(SSHLauncher.java:1173)
        at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:701)
        at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:696)
        at java.util.concurrent.FutureTask.run(FutureTask.java:262)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)
    Caused by: java.io.IOException: Decrypted PEM has wrong padding, did you specify the correct password?
        at com.trilead.ssh2.crypto.PEMDecoder.removePadding(PEMDecoder.java:110)
        at com.trilead.ssh2.crypto.PEMDecoder.decryptPEM(PEMDecoder.java:287)
        at com.trilead.ssh2.crypto.PEMDecoder.decode(PEMDecoder.java:320)
        at com.trilead.ssh2.auth.AuthenticationManager.authenticatePublicKey(AuthenticationManager.java:224)
        ... 11 more
    [06/25/15 13:06:55] [SSH] Authentication failed.
    hudson.AbortException: Authentication failed.
        at hudson.plugins.sshslaves.SSHLauncher.openConnection(SSHLauncher.java:1178)
        at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:701)
        at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:696)
        at java.util.concurrent.FutureTask.run(FutureTask.java:262)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)
    [06/25/15 13:06:55] Launch failed - cleaning up connection
    [06/25/15 13:06:55] [SSH] Connection closed.
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