问题描述
我已经安装了Jenkins Selenium Plugin，但是在启动时无法初始化。
Jenkins启动日志
> java.net.socketTimeoutException: Accept timed out at
> java.base/java.net.PlainSocketImpl.socketAccept(Native Method) at
> java.base/java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:458)
> at java.base/java.net.ServerSocket.implAccept(ServerSocket.java:565)
> at java.base/java.net.ServerSocket.accept(ServerSocket.java:533) at
> hudson.slaves.Channels.newJVM(Channels.java:227) at
> hudson.plugins.selenium.process.SeleniumProcessUtils.createSeleniumGridVM(SeleniumProcessUtils.java:59)
> at hudson.plugins.selenium.PluginImpl.startHub(PluginImpl.java:176)
> at
> hudson.plugins.selenium.PluginImpl.postinitialize(PluginImpl.java:136)
> at hudson.PluginManager$2$1$2.run(PluginManager.java:575) at
> org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
> at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:296) at
> jenkins.model.Jenkins$5.runTask(Jenkins.java:1131) at
> org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:214) at
> org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117) at
> jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:59)
> at
> java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
> at
> java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
> at java.base/java.lang.Thread.run(Thread.java:834)
然后
> Completed initialization Aug 14,2020 2:50:17 PM WARNING
> jenkins.model.Jenkins Exception in onOnline() for the computer
> listener class hudson.plugins.selenium.ComputerListenerImpl on the
> Jenkins master node java.lang.NullPointerException at
> hudson.plugins.selenium.PluginImpl.startSeleniumNode(PluginImpl.java:458)
> at
> hudson.plugins.selenium.ComputerListenerImpl.onOnline(ComputerListenerImpl.java:30)
似乎在'hudson.slaves.Channels.newJVM(Channels.java:227)'上失败了
我尝试过的事情-
- 禁用防火墙
- 重新安装插件
- 将调试级别设置为
ALL以帮助调试 - 在Jenkins位置更改Jenkins URL
从节点可以毫无问题地连接到主节点。
- java-11.0.8 + 10-post-Ubuntu-0ubuntu118.04.1
- Jenkins-2.252
- 操作系统-Linux（ubuntu 18.04）Azure VM
- 硒插件3.141.59
可能是什么原因造成的？
解决方法
我遇到了类似的问题，我认为主要原因是该插件与 java 11 不兼容。还有另一个日志文件 /var/lib/jenkins/selenium.log，您可以在 jenkins 之后看到以下输出开始：
/usr/lib/jvm/java-11-openjdk-amd64/bin/java -cp /var/cache/jenkins/war/WEB-INF/lib/remoting-4.5.jar hudson.remoting.Launcher -cp /var/lib/jenkins/plugins/selenium/WEB-INF/lib/selenium-server-standalone-3.141.59.jar:/var/lib/jenkins/plugins/selenium/WEB-INF/lib/htmlunit-driver-standalone-2.33.3.jar -connectTo localhost:37677
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by hudson.remoting.Launcher (file:/var/cache/jenkins/war/WEB-INF/lib/remoting-4.5.jar) to method java.net.URLClassLoader.addURL(java.net.URL)
WARNING: Please consider reporting this to the maintainers of hudson.remoting.Launcher
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Exception in thread "main" java.lang.IllegalArgumentException: object is not an instance of declaring class
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at hudson.remoting.Launcher.addClasspath(Launcher.java:154)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at io.jenkins.remoting.shaded.org.kohsuke.args4j.spi.MethodSetter.addValue(MethodSetter.java:47)
at io.jenkins.remoting.shaded.org.kohsuke.args4j.spi.StringOptionHandler.parseArguments(StringOptionHandler.java:19)
at io.jenkins.remoting.shaded.org.kohsuke.args4j.CmdLineParser.parseArgument(CmdLineParser.java:520)
at hudson.remoting.Launcher.main(Launcher.java:293)
如果您使用 java 8 运行 jenkins，该插件将起作用。