| I am running Jenkins on docker container based on OpenJDK 11.
I am using logstash-gelf plugin (https://github.com/mp911de/logstash-gelf) to redirect logs directly to Graylog. Before changing to Java 11 it was working on Java 8, but now during startup of container I got those logs:
Can't load log handler "biz.paluch.logging.gelf.jul.GelfLogHandler"
java.lang.ClassNotFoundException: biz.paluch.logging.gelf.jul.GelfLogHandler
java.lang.ClassNotFoundException: biz.paluch.logging.gelf.jul.GelfLogHandler
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
at java.logging/java.util.logging.LogManager.createLoggerHandlers(LogManager.java:1000)
at java.logging/java.util.logging.LogManager$4.run(LogManager.java:970)
at java.logging/java.util.logging.LogManager$4.run(LogManager.java:966)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.logging/java.util.logging.LogManager.loadLoggerHandlers(LogManager.java:966)
at java.logging/java.util.logging.LogManager.initializeGlobalHandlers(LogManager.java:2417)
at java.logging/java.util.logging.LogManager$RootLogger.accessCheckedHandlers(LogManager.java:2511)
at java.logging/java.util.logging.Logger.getHandlers(Logger.java:2089)
at winstone.Launcher.main(Launcher.java:335)
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 Main._main(Main.java:375)
at Main.main(Main.java:151)
My handlers in logging.properties: handlers= java.util.logging.FileHandler, java.util.logging.ConsoleHandler, biz.paluch.logging.gelf.jul.GelfLogHandler It seems like logs in Jenkins based on Java 11 has maybe another kind of format.
I opened issue on this plugin page, but I got information that it issue is not related to logstash-gelf plugin, ([https://github.com/mp911de/logstash-gelf/issues/234)
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