robusta-dev / java_toolkit

This is a toolkit for debugging java applications in your kubernetes cluster

How to support your specific jdk

In your docker image copy the jdk to /app/openjdk in your dockerfile

for example 'COPY --from=openjdk:11.0.14-jdk /usr/local/openjdk-11 /app/openjdk'

If needed change the flags of the jdk commands in the config.py file.

Sometimes jdk commands need to be run in a specific way or from a specific file

for example jhsdb jmap --pid ...

example commands

java-toolkit jmap PID_HERE

java-toolkit jstack PID_HERE

For building you can use skaffold

For running on Google Cloud we have a faster build with skaffold

skaffold run -p gcloud-build

For additional manual testing with the JDK there are additional bash commands added from additional_bash_commands.sh

example usages:

first assign environment variable of the pid you want to debug:

PID=1234

push the jdk onto the pod:

push_jdk

open a shell to the pod namespace and run whatever commands you want:

podns_shell

after you exit the interactive shell, remove the jdk from pod:

cleanup