arning: no key algorithms provided; JENKINS-42959 disabled
SSHLauncher{host='10.179.40.178', port=22, credentialsId='5b13f0fd-0bcc-4880-ac50-337185c627b5', jvmOptions='', javaPath='', prefixStartSlaveCmd='', suffixStartSlaveCmd='', launchTimeoutSeconds=210, maxNumRetries=10, retryWaitTime=15, sshHostKeyVerificationStrategy=hudson.plugins.sshslaves.verifiers.KnownHostsFileKeyVerificationStrategy, tcpNoDelay=true, trackCredentials=true}
[08/21/19 16:30:35] [SSH] Opening SSH connection to 10.179.40.178:22.[08/21/19 16:30:35] [SSH] WARNING: No entry currently exists in the Known Hosts file for this host. Connections will be denied until this new host and its associated key is added to the Known Hosts file.
Key exchange was not finished, connection is closed.
java.io.IOException: There was a problem while connecting to 10.179.40.178:22
	at com.trilead.ssh2.Connection.connect(Connection.java:760)
	at hudson.plugins.sshslaves.SSHLauncher.openConnection(SSHLauncher.java:817)
	at hudson.plugins.sshslaves.SSHLauncher$1.call(SSHLauncher.java:419)
	at hudson.plugins.sshslaves.SSHLauncher$1.call(SSHLauncher.java:406)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$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:711)
	... 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
[08/21/19 16:30:35] Launch failed - cleaning up connection
[08/21/19 16:30:35] [SSH] 连接关闭。