报错信息如下:

[05/05/24 14:18:35] [SSH] Starting agent process: cd "/home/jenkins" && /usr/local/jdk/jdk1.8.0_391/bin/java  -jar remoting.jar -workDir /home/jenkins -jar-cache /home/jenkins/remoting/jarCache
Exception in thread "main" java.lang.UnsupportedClassVersionError: hudson/remoting/Launcher has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0

错误原因:
由于Jenkins的运行环境是Java11,但是节点的运行环境是Java1.8导致。

错误解决办法:
把节点配置里的Jdk路径改为11以上即可。当然如果你项目运行必须用Java1.8,你可以先把jdk路径改为11以上,节点启动成功后,再改回1.8

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