3/9/2023 0 Comments Jprofiler vs yourkitThe reason is that with this configuration the profiling agent does not receive its profiling settings as command line parameters or from a config file but from the JProfiler GUI. That will block the JVM at startup and wait for a JProfiler GUI to connect. Notice that there isn’t a “nowait” argument. agentpath:/jprofiler/bin/linux-圆4/libjprofilerti.so=port=8849Ĭhange the path accordingly if using an image other than one built using the Dockerfile above. “Where” to add it depends on how the application is started and JVM arguments passed in: Add to the JVM startup arguments JProfiler as an agent.Add as part of application’s container definition:.If not defined already, add “initContainers” (Kubernetes 1.6 ) under “” and define an Init Container using JProfiler’s image name and tag (and if needed, replace “/jprofiler” with the location where JProfiler’s file directory is in that image):Ĭommand:.If not defined already, add “volumes” section under “” and define a new volume:. ![]() ConfigurationĬhange the application’s deployment configuration as follows: The above is for an older JProfiler version but it should work the same for a newer one. # Eliminate the version-specific directory Io.k8s.display-name="JProfiler from $" -H "User-Agent: Mozilla/5.0 (Macintosh Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/.62 Safari/537.36" \ JPROFILER_DISTRO="jprofiler_linux_10_1_1.tar.gz" \ If you don’t have a JProfiler image, here is a sample Dockerfile that can be used to build one (check if your JProfiler license agreement allows you to do that): FROM centos:7 ![]() ![]() This assumes that an application image and working deployment configuration for the Java application exist. This way, our JVM can reference at startup time the JProfiler agent from the shared volume. The approach here is to use an Init Container to copy the JProfiler installation to a volume shared between our Init Container and the other Containers that will be started in the Pod. For the most part, they are like regular Containers and have the property that once their execution completes successfully they are terminated only then the application Container(s) in the Pod are started. A Pod can have one or more Init Containers. Below is an example of how to accomplish just that with one such tool – JProfiler.Ī definitely not recommended approach is to “bake” JProfiler in the application’s image, which leads to tight coupling and larger application image.Ī better way is to use an Init Container. Running a JVM in Kubernetes Pod somewhat complicates things when it comes to connecting to it from an external profiler tool.
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