I have an ec2-instance with two different users, ec2-user and other-user and I have some jvm processes running on each. I am trying to remote connect via JProfiler but I cannot seem to be able to find the JVM processes in JProfiler (version 12.0.3 Build 12084)
So I started digging into the box to check whats happening, here is what i found
cd /tmp pwd drwxr-xr-x 2 other-user users 4.0K Jul 7 23:35 hsperfdata_other-user drwxr-xr-x 2 ec2-user users 4.0K Jul 7 23:35 hsperfdata_ec2-user
ls /tmp/hsperfdata_ec2-user (Nothing) ls /tmp/hsperfdata_other-user 9014
9014 here is the pid of the java process and the file contains some binary data. However there is another java process run as ec2-user, but that is not showing up in /tmp/hsperfdata_ec2-user.
The two JVMs only differ in the version they are started with
The one that is for the java process run as ec2-user
openjdk version "11.0.11" 2021-04-20 LTS OpenJDK Runtime Environment (build 11.0.11+9-LTS) OpenJDK 64-Bit Server VM (build 11.0.11+9-LTS, mixed mode)
The other one for the other-user
openjdk version "1.8.0_282" OpenJDK Runtime Environment (build 1.8.0_282-b08) OpenJDK 64-Bit Server VM (build 25.282-b08, mixed mode)
I ran ps aux |grep java and found both pids functioning.
I tried to delete the directory, restart the jvm process for ec2-user and then try to attach it again but that did not work.
I also tried to use a different version of JProfiler locally like this on the ec2-instance
wget --no-check-certificate https://download-gcdn.ej-technologies.com/jprofiler/jprofiler_linux_11_0.tar.gz -P /tmp/;tar -zxvf /tmp/jprofiler_linux_11_0.tar.gz -C /tmp sudo -u ec2-user /tmp/jprofiler11.0/bin/jpenable No unprofiled JVMs found. If the target JVM is running as a different user, restart as sudo -u [user] jpenable
I am at a loss at how to progress. I was scrounging around for logs for JProfiler remote agent but so far have not found anything. I thought it was a permissions issue on the directories but they seem to be fine. I was checking the release logs but nothing stood out.
Can someone please help me with this?
Figured it out. I had this jvm arg enabled in the other process
Once I removed this flag, it was all smooth sailing.