[kepler-dev] Environment Variables and System Properties

[Scott Zimmer]

My apologies to the group for posting this question.  I've rebuilt my 
Kepler-2.2 from the svn repository and I no longer have trouble loading 
the environment variables.  I must have made other changes to my version 
of the Run.java that were causing me to be unable to load environment 
variables.

Scott

On 10/25/2011 3:00 PM, kepler-dev-request at kepler-project.org wrote:
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>     1.  Environment Variables and System Properties (Scott Zimmer)
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> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 25 Oct 2011 10:48:26 -0400
> From: Scott Zimmer<szimmer at optensity.com>
> To: kepler-dev at kepler-project.org
> Subject: [kepler-dev] Environment Variables and System Properties
> Message-ID:<4EA6CC3A.6050604 at optensity.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> I am trying to set both system properties and environment variables from
> within Kepler on a Linux machine.  I am executing my workflows through
> KeplerWebService but I can get the same behavior if I type this command
> from the command line in the directory KEPLERHOME.
>
>    java -Djava.awt.headless=true -classpath
> build-area/lib/ant.jar:kepler.jar org.kepler.build.runner.Kepler -server
> -repository=optensityARP -runwf -nogui
> /tmp/kar/50.17.219.137:8080_knb_services_QueryService/7341.417.2.kar
>
> I have a file
> KEPLERHOME/kepler-2.2/resources/system.properties/kepler.properties with
> the following single line
> WSX=yum
>
> I have another file KEPLERHOME/kepler-2.2/module-info/environment.txt
> with the following single line
> QAZ=/tmp/
>
> I built a workflow with an actor that contains the following lines of code:
> System.out.println("Environment");
> System.out.println(System.getenv().toString());
> System.out.println("Properties");
> System.out.println(System.getProperties());
>
> When I run this actor, neither WSX or QAZ appears in the result that is
> printed to the screen.  Am I missing something about how to set
> environment variables?  I also know that the code Run.java in
> org.kepler.build is printing to the screen "Set environment variable:
> QAZ = /tmp/" yet it doesn't appear to be set when my actor tries to
> access it.
>
> My use case requires me to load a custom module which includes actors
> that call native libraries and need to add entries to PATH, and
> LD_LIBRARY_PATH as well as have a variable XUGGLE_HOME set as an
> environment variable.  I can easily set these variables using export
> PATH, export LD_LIBRARY_PATH, and export XUGGLE_HOME, but I want these
> variables to be loaded at run time so that new modules can be added with
> different environment variables without a need to reconfigure the
> machines where they are running.
>
> Scott
>


-- 
Scott Zimmer
Optensity, Inc.
(512) 299-7218