我正在尝试启动新的奴隶代理，但我看到下面的错误。你能帮助解决这个问题吗？

• 我已经复制了两台机器的密钥在.ssh/authorized_keys和能够连接手动，但失败，从Jenkins。
• 所有的权限看起来也不错。

[02/19/16 13:12:34] [SSH] Opening SSH connection to sdc-caoneops-    app1.qa.xxxxx.com:22.
    ERROR: Server rejected the 1 private key(s) for App (credentialId:6aced962-  26cd-4c8f-97d3-305c2e2a6540/method:publickey)
    [02/19/16 13:12:34] [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$2.call(SSHLauncher.java:696)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
    [02/19/16 13:12:34] Launch failed - cleaning up connection
    [02/19/16 13:12:34] [SSH] Connection closed.

字符串