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[grouper-users] Grouper 2.5 on Openshift

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  • From: Oliver Trieu <>
  • To: "" <>
  • Subject: [grouper-users] Grouper 2.5 on Openshift
  • Date: Fri, 29 May 2020 15:54:16 +0200

Dear List,

We are currently running Grouper 2.4 on the Openshift Platform and we gave the new 2.5 release a try.
The 2.5 Grouper released is aimed towards Docker and that is what Openshift is using at its core.

Even with the provided instructions to run grouper as non-root will not work in openshift
as the supervisord ist still assuming that it will be startet as root-process and will then fail to drop these privileges.

My first try was to create my own docker file based on your file:
FROM i2incommon/grouper:2.5.22


COPY $CONFIG_DIR/conf/ /opt/grouper/grouperWebapp/WEB-INF/classes/
COPY $CONFIG_DIR/tomcat/ /opt/tomee/bin/
COPY ojdbc8.jar /opt/grouper/grouperWebapp/WEB-INF/lib/
COPY /opt

RUN cp /opt/grouper/grouperWebapp/WEB-INF/libUiAndDaemon/* /opt/grouper/grouperWebapp/WEB-INF/lib/ && \
    chgrp -R 0 /opt && \
    chmod -R g=u /opt && \
    chmod +x /opt/tomee/bin/ && \
    chmod +x /opt/

USER tomcat

ENTRYPOINT [ "/opt/" ]

As you can see i am pretty much just copying my config files and overwriting the original entrypoint since that will not work.
The key part here is using the USER directive to switch to another user at the end of the Dockerfile so everything in the image will run under this user.
If you are interrested in detail here is the documentation on creating dockerfiles for openshift:

This will run in Openshift and start the processes without errors.
The daemon seems to be working normal ( i did not have time for many tests so far) but the UI is not working.
The following Error is happening:

Sadly i have no idea how to remedy this problem.
So i created my own Dockerfile running the grouper-installer myself.
I pretty much copied your aproach where applicable and tried to mimic your directory structure.
So after running the installer i copy my config files as before.

Not very surprisingly the result is also exactly the same.
The Daemon is starting without any problems.
The UI also up complaining about some TagLib loading problems (this also happens with the original image):
ERROR OpenEJB.startup - Unable to load tag library tag class: org.apache.taglibs.request.LogTag

But any page-access will throw the NullPointerException mentioned above in exactly the same way.

So my conclusion is that the current image could be used on Openshift in its current form.
However the UI is currently now working.
Does anybody have a hint where the problem could be?

Kind Regards


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