我在构建执行期间遇到了 Jenkins 从属进程被终止的问题。
- 操作系统：Windows 2012 R2（主服务器和从服务器）
- Java：1.8.0_211（Mater 和 Salve）
- Jenkins版本：2.176.2Slave
- 启动方式：Java Web start、JNLP（连接Master启动）
问题：我在 Jenkins 中有一个项目失败，主要是因为在执行过程中，从属进程在“以 CLI 模式启动 ServiceWrapper”后终止。查找子进程conhost.exe并因作为后备的 Killing 而失败。
这只发生在项目/管道中，其中我有一个 python 脚本，可以 ping 一个内部 URL（https://网址/ping)，调用已安装的网络模拟器工具，调整网络延迟并写入文件/推送到 ELK。我使用 .pac 文件设置了互联网代理。
它完成了项目中的所有步骤，最后从属终止，将构建标记为失败。
注意：我们还安装了另一个旧版本的 Jenkins 2.76，其中相同的项目/管道运行正常。现在我们想升级到最新的 Jenkins，我们发现从属终止的问题。我现在每次都必须关闭网络仿真器工具并重新启动 Jenkins 服务才能使其重新上线。
在 Jenkins-slave.wrapper.log 中观察到的错误：
2019-07-24 03:51:59,751 INFO - Stopping jenkinsslave-e__jenkins
2019-07-24 03:51:59,751 DEBUG - ProcessKill 6872
2019-07-24 03:51:59,860 INFO - Found child process: 6408 Name: conhost.exe
2019-07-24 03:51:59,892 INFO - Stopping process 6408
2019-07-24 03:51:59,907 INFO - Send SIGINT 6408
2019-07-24 03:51:59,907 WARN - SIGINT to 6408 failed - Killing as fallback
2019-07-24 03:51:59,907 INFO - Stopping process 6872
2019-07-24 03:51:59,907 INFO - Send SIGINT 6872
2019-07-24 03:51:59,907 WARN - SIGINT to 6872 failed - Killing as fallback
2019-07-24 03:51:59,907 INFO - Finished jenkinsslave-e__jenkins
2019-07-24 03:51:59,907 DEBUG - Completed. Exit code is 0
在 jenkins-slave.error.log 中观察到的错误：
Jul 24, 2019 3:57:23 AM hudson.remoting.jnlp.Main$CuiListener statusJul
24, 2019 3:57:23 AM hudson.remoting.jnlp.Main$CuiListener statusINFO: Terminated
Jul 24, 2019 3:57:23 AM hudson.util.ProcessTree getWARNING: Error while determining if vetoers existhudson.remoting.RequestAbortedException: java.nio.channels.ClosedChannelException
at hudson.remoting.Request.abort(Request.java:340) at hudson.remoting.Channel.terminate(Channel.java:1040)
at org.jenkinsci.remoting.protocol.impl.ChannelApplicationLayer.onReadClosed(ChannelApplicationLayer.java:209)
at org.jenkinsci.remoting.protocol.ApplicationLayer.onRecvClosed(ApplicationLayer.java:222)
at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.onRecvClosed(ProtocolStack.java:816)
at org.jenkinsci.remoting.protocol.FilterLayer.onRecvClosed(FilterLayer.java:287)
at org.jenkinsci.remoting.protocol.impl.SSLEngineFilterLayer.onRecvClosed(SSLEngineFilterLayer.java:172)
at org.jenkinsci.remoting.protocol.ProtocolStack$Ptr.onRecvClosed(ProtocolStack.java:816)
at org.jenkinsci.remoting.protocol.NetworkLayer.onRecvClosed(NetworkLayer.java:154)
at org.jenkinsci.remoting.protocol.impl.BIONetworkLayer.access$1800(BIONetworkLayer.java:48)
at org.jenkinsci.remoting.protocol.impl.BIONetworkLayer$Reader.run(BIONetworkLayer.java:264)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at hudson.remoting.Engine$1.lambda$newThread$0(Engine.java:93)
at java.lang.Thread.run(Unknown Source) Suppressed: hudson.remoting.Channel$CallSiteStackTrace: Remote call to JNLP4-connect connection to jenkinsmater/IP address:33131
at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1743)
at hudson.remoting.Request.call(Request.java:202) at hudson.remoting.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:286)
at com.sun.proxy.$Proxy6.fetch3(Unknown Source)
at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:209)
at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source) at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:383) at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:307)
at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source) at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:383) at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:307)
at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source) at hudson.remoting.RemoteClassLoader.loadClassFile(RemoteClassLoader.java:383) at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:307)
at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source)
at hudson.util.ProcessTree.get(ProcessTree.java:415)
at hudson.Launcher$RemoteLauncher$KillTask.call(Launcher.java:1103) at hudson.Launcher$RemoteLauncher$KillTask.call(Launcher.java:1094)
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$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask.run(Unknown Source) ... 4 moreCaused by: java.nio.channels.ClosedChannelException ... 7 more
Jul 24, 2019 3:57:23 AM hudson.util.ProcessTree getWARNING: Failed to load winp. Reverting to the defaultjava.lang.NoClassDefFoundError: hudson/util/ProcessTree$WindowsOSProcessException
at hudson.util.ProcessTree.get(ProcessTree.java:430)
at hudson.Launcher$RemoteLauncher$KillTask.call(Launcher.java:1103) at hudson.Launcher$RemoteLauncher$KillTask.call(Launcher.java:1094)
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$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at hudson.remoting.Engine$1.lambda$newThread$0(Engine.java:93)
at java.lang.Thread.run(Unknown Source)Caused by: java.lang.ClassNotFoundException: hudson.util.ProcessTree$WindowsOSProcessException at java.net.URLClassLoader.findClass(Unknown Source)
at hudson.remoting.RemoteClassLoader.findClass(RemoteClassLoader.java:171) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 12 more
Jul 24, 2019 3:57:23 AM hudson.remoting.Request$2 runINFO: Failed to send back a reply to the request hudson.remoting.Request$2@626d990c: hudson.remoting.ChannelClosedException: Channel "hudson.remoting.Channel@4d834d1e:JNLP4-connect connection to jenkinsmaster/IP Address:33131": channel is already closed
Jul 24, 2019 3:57:33 AM hudson.remoting.jnlp.Main$CuiListener statusINFO: Performing onReconnect operation.
有人可以帮忙解决这个问题吗？