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12-03-2018 02:46 PM
Hi! I am new on AppDynamics and I want to configure a Java Agent on a simple Spring Boot Application, for trial proposes. but when I put the line -javaagent an error is going on.
[root@ip-172-31-33-180 docker-apm]# docker logs docker Exception in thread "main" java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:386) at sun.instrument.InstrumentationImpl.loadClassAndCallPremain(InstrumentationImpl.java:401) Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: -1 at java.lang.String.substring(String.java:1967) at com.singularity.ee.agent.appagent.AgentEntryPoint.getAgentDirFromCommandLine(AgentEntryPoint.java:1976) at com.singularity.ee.agent.appagent.AgentEntryPoint.getAgentInstallDirectory(AgentEntryPoint.java:992) at com.singularity.ee.agent.appagent.AgentEntryPoint.premain(AgentEntryPoint.java:471) ... 6 more FATAL ERROR in native method: processing of -javaagent failed Aborted (core dumped)
this is my dockerfile
FROM openjdk:8 ADD docker-spring-boot.jar docker-spring-boot.jar EXPOSE 8080 ADD AppServerAgent AppServerAgent RUN apt-get update && apt-get install telnet RUN chmod -R o+x /AppServerAgent RUN chmod 777 /AppServerAgent WORKDIR /AppServerAgent ENV JAVA_OPTS=-javaagent:javaagent.jar ENTRYPOINT [ "sh", "-c", "java $JAVA_OPTS -Djava.security.egd=file:/dev/./urandom -jar /docker-spring-boot.jar" ] #ENTRYPOINT [ "sh", "-c", "java -Djava.security.egd=file:/dev/./urandom -jar /docker-spring-boot.jar" ]
thanks
Solved! Go to Solution.
12-04-2018 02:50 AM
Walter,
I suspect if you change
ENV JAVA_OPTS=-javaagent:javaagent.jar
to
ENV JAVA_OPTS=-javaagent:/AppServerAgent/javaagent.jar
The agent may load successfully.
Note, we have published some docker files illistrating how you can install the agent in a docker environment. This one is pretty close to what you're trying to achieve.
Warm regards,
Peter
12-04-2018 05:25 AM
So Simple, thanks!
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