Issue
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When trying to configure a JDK within Jenkins, I am getting the following error:
Stack trace org.apache.commons.jelly.JellyTagException: jar:file:/var/jenkins_home/war/WEB-INF/lib/jenkins-core-$JENKINS_VERSION.jar!/hudson/slaves/DumbSlave/configure-entries.jelly:61:73: <st:include> org.apache.commons.jelly.JellyTagException: jar:file:/var/jenkins_home/war/WEB-INF/lib/jenkins-core-$JENKINS_VERSION.jar!/lib/form/property.jelly:40:72: <st:include> Lhudson/tools/JDKInstaller; at org.apache.commons.jelly.impl.TagScript.handleException(TagScript.java:726) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:281) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95) at org.kohsuke.stapler.jelly.CallTagLibScript$1.run(CallTagLibScript.java:99) at org.apache.commons.jelly.tags.define.InvokeBodyTag.doTag(InvokeBodyTag.java:91) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269) at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161) at org.apache.commons.jelly.tags.core.OtherwiseTag.doTag(OtherwiseTag.java:41) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95) at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161) at org.apache.commons.jelly.tags.core.ChooseTag.doTag(ChooseTag.java:38) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95) at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161) at org.apache.commons.jelly.tags.core.WhenTag.doTag(WhenTag.java:46) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:269) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95) at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:161) at org.apache.commons.jelly.tags.core.ChooseTag.doTag(ChooseTag.java:38)
Environment
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Jenkins LTS > 2.121.1
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Jenkins > 2.112
Resolution
Due to the Oracle change concerns expressed in JENKINS-22367, the JDK tool loader was moved out of core into a plugin that could changed with more frequency. This means that that your JDK library is no longer being loaded since it is now kept in an external plugin.
Resolution Install the JDK Tool Plugin