一、背景

物理机A 上安装了Docker， Docker 上有container Jenkins

Jenkins 要配置连接物理机A作为agent A(因为要在物理机A上执行一些Job)。

二、问题

在Jenkins->nodes下   配agent， 选的 launch slave agents via SSH

[07/10/19 09:35:19] [SSH] The SSH key presented by the remote host does not match the key saved in the Known Hosts file against this host. Connections to this host will be denied until the two keys match.
Key exchange was not finished, connection is closed.
java.io.IOException: There was a problem while connecting to  XXX:22
    at com.trilead.ssh2.Connection.connect(Connection.java:758)
    at hudson.plugins.sshslaves.SSHLauncher.openConnection(SSHLauncher.java:1324)
    at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:831)
    at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:820)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.IOException: Key exchange was not finished, connection is closed.
    at com.trilead.ssh2.transport.KexManager.getOrWaitForConnectionInfo(KexManager.java:95)
    at com.trilead.ssh2.transport.TransportManager.getConnectionInfo(TransportManager.java:237)
    at com.trilead.ssh2.Connection.connect(Connection.java:710)
    ... 7 more
Caused by: java.io.IOException: The server hostkey was not accepted by the verifier callback
    at com.trilead.ssh2.transport.KexManager.handleMessage(KexManager.java:548)
    at com.trilead.ssh2.transport.TransportManager.receiveLoop(TransportManager.java:790)
    at com.trilead.ssh2.transport.TransportManager$1.run(TransportManager.java:502)
    ... 1 more

三、解决办法