我已经将Jenkins更新到最新版本（Jenkins版本2.164.1），并且Selenium Grid版本是：3.12.0。主服务器（在其中运行集线器）上的Java版本是：openjdk版本“ 1.8.0_191”，从服务器上是：Java版本“ 1.8.0_191”和SSH Slave插件版本1.11。当点头试图连接到奴隶时会抛出错误：
[04/02/19 09:29:28] [SSH] Starting sftp client.
[04/02/19 09:29:28] [SSH] Copying latest slave.jar...
[04/02/19 09:29:28] [SSH] Copied 789,283 bytes.
Expanded the channel window size to 4MB
[04/02/19 09:29:28] [SSH] Starting slave process: cd "/var/jenkins" && /usr/lib/jvm/jdk1.8.0_191/bin/java -Xmx128m -Xms128m -jar slave.jar
channel started
Remoting version: 3.29
This is a Unix agent
Evacuated stdout
Starting Selenium nodes on automation-jenkins-node
Apr 02, 2019 9:29:30 AM org.jenkinsci.remoting.util.AnonymousClassWarnings warn
WARNING: Attempt to (de-)serialize anonymous class hudson.plugins.selenium.configuration.DirectJsonInputConfiguration$1; see: https://jenkins.io/redirect/serialization-of-anonymous-classes/
hudson.util.IOException2: Slave JVM has not reported exit code. Is it still running?
at hudson.plugins.sshslaves.SSHLauncher.startSlave(SSHLauncher.java:984)
at hudson.plugins.sshslaves.SSHLauncher.access$400(SSHLauncher.java:137)
at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:725)
at hudson.plugins.sshslaves.SSHLauncher$2.call(SSHLauncher.java:706)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.IOException: Failed to copy /var/lib/jenkins/plugins/selenium/WEB-INF/lib/selenium-server-standalone-3.12.0.jar to /var/jenkins/selenium-server-standalone-3.12.0.jar
at hudson.FilePath.copyTo(FilePath.java:2191)
at hudson.plugins.selenium.callables.SeleniumCallable.invoke(SeleniumCallable.java:76)
at hudson.plugins.selenium.callables.SeleniumCallable.invoke(SeleniumCallable.java:23)
at hudson.FilePath$FileCallableWrapper.call(FilePath.java:3041)
at hudson.remoting.UserRequest.perform(UserRequest.java:212)
at hudson.remoting.UserRequest.perform(UserRequest.java:54)
at hudson.remoting.Request$2.run(Request.java:369)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
... 4 more
Suppressed: hudson.remoting.Channel$CallSiteStackTrace: Remote call to automation-jenkins-node
使用SSH Slave插件1.29版会引发不同的错误：
[04/02/19 13:52:10] [SSH] Starting sftp client.
[04/02/19 13:52:10] [SSH] Copying latest remoting.jar...
[04/02/19 13:52:10] [SSH] Copied 789,283 bytes.
Expanded the channel window size to 4MB
[04/02/19 13:52:10] [SSH] Starting agent process: cd "/var/jenkins" && /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Xmx128m -Xms128m -jar remoting.jar -workDir /var/jenkins
Apr 02, 2019 1:52:10 PM org.jenkinsci.remoting.engine.WorkDirManager initializeWorkDir
INFO: Using /var/jenkins/remoting as a remoting work directory
Both error and output logs will be printed to /var/jenkins/remoting
channel started
Remoting version: 3.29
This is a Unix agent
Evacuated stdout
Starting Selenium nodes on automation-jenkins-node
Apr 02, 2019 1:52:13 PM org.jenkinsci.remoting.util.AnonymousClassWarnings warn
WARNING: Attempt to (de-)serialize anonymous class hudson.plugins.selenium.configuration.DirectJsonInputConfiguration$1; see: https://jenkins.io/redirect/serialization-of-anonymous-classes/
Slave JVM has not reported exit code. Is it still running?
[04/02/19 13:52:18] Launch failed - cleaning up connection
[04/02/19 13:52:18] [SSH] Connection closed.
ERROR: Connection terminated
java.io.EOFException
at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2681)
at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:3156)
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:862)
at java.io.ObjectInputStream.(ObjectInputStream.java:358)
at hudson.remoting.ObjectInputStreamEx.(ObjectInputStreamEx.java:49)
at hudson.remoting.Command.readFrom(Command.java:140)
at hudson.remoting.Command.readFrom(Command.java:126)
at hudson.remoting.AbstractSynchronousByteArrayCommandTransport.read(AbstractSynchronousByteArrayCommandTransport.java:36)
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:63)
Caused: java.io.IOException: Unexpected termination of the channel
at hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:77)