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  1. Jenkins
  2. JENKINS-46263

Error while working with monitering external job

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    Description

      This plugin worked fine for me with Jenkins 1.451.
      I recently upgraded to Jenkins 2.60.2, and everything is working on the new server except monitored remote jobs or External job is not working.
      To install the plugin, I extracted the following jar files from the war file and installed them on the remote system as instructed on the plugin wiki.
      {{jenkins-core-*.jar }}
      {{remoting-*.jar }}
      {{ant-1.7.0.jar }}
      {{commons-io-1.4jar }}
      {{commons-lang-2.4.jar }}
      {{jna-posix-*.jar }}
      xstream-*.jar
      The remote system has java 1.8.
      Now when I try to run the cron jobs on the remote system using the jenkins-core.jar, it fails with this trace:

      Exception in thread "main" java.lang.NoClassDefFoundError: javax/servlet/ServletContextListener
      at java.lang.ClassLoader.defineClass1(Native Method)
      at java.lang.ClassLoader.defineClass(ClassLoader.java:803)
      at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
      at java.net.URLClassLoader.defineClass(URLClassLoader.java:442)
      at java.net.URLClassLoader.access$100(URLClassLoader.java:64)
      at java.net.URLClassLoader$1.run(URLClassLoader.java:354)
      at java.net.URLClassLoader$1.run(URLClassLoader.java:348)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:347)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
      at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
      at hudson.Main.<clinit>(Main.java:222)
      Caused by: java.lang.ClassNotFoundException: javax.servlet.ServletContextListener
      at java.net.URLClassLoader$1.run(URLClassLoader.java:359)
      at java.net.URLClassLoader$1.run(URLClassLoader.java:348)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:347)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
      at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
      ... 13 more

      None of the jar files contain ServletContextListener. From google I learn it is in the servlet api so I found the servlet-api-3.1.0.jar on Oracle's website and tried putting that in the same directory as the other jar files, and setting CLASSPATH, but the same error occurs.
      Is this a problem with the plugin or its documentation?
      Please suggest for proper solution

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          vsharma4 vipin sharma added a comment -

          Please provide proper explanation (step by step) and solution for this issue.

          vsharma4 vipin sharma added a comment - Please provide proper explanation (step by step) and solution for this issue.

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            vsharma4 vipin sharma
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              Created:
              Updated: