Re: Does Leiningen read Env Vars such as JAVA_OPTS?

[Sean Corfield]

Michael Drago wrote on Tuesday, February 9, 2016 at 6:37 AM:

Hi guys. I'm trying to figure out where the JVM gets the java parameters (such as -Xms and -Xmx) when starting apps via "lein run" and when using the repl. The only successful way I have been able to set the memory is via the project.clj's :jvm-opts. Can we do this with an environment variable such as $JAVA_OPTS? I've tried $JAVA_OPTS with no success. When the env var is set the JVM's memory resorts to the system default. I am trying to do this on Redhat (Leiningen 2.4.2 on Java 1.7.0_45 Java HotSpot(TM) 64-Bit Server VM). Thank you!

Looks like JVM_OPTS is what you want, based on a quick look at the source code… 

https://github.com/technomancy/leiningen/blob/4383caecce94482a57a25146bdd236e89b20f75f/leiningen-core/src/leiningen/core/eval.clj#L131

And the docs seem to confirm that:

https://github.com/technomancy/leiningen/blob/792750b7a1bdf0499081c72b197df41cee5ef648/doc/TUTORIAL.md#setting-jvm-options

Sean Corfield -- (904) 302-SEAN
An Architect's View -- http://corfield.org/

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