Friday, October 30, 2009

Run db:migrate in jruby from warfile

If you have production servers running jruby/rails applications packaged as war files and dont actually have the full jruby installed to run your migrations, you can follow these steps. This will allow you to run db:migrate without a jruby installation on your java application servers

Assuming you are deploying your app called 'myapp' into tomcat5, you would have a warfile located in $CATALINA_HOME/webapps/myapp.war. if your war is not unwar'd you can run "jar xvf myapp.war" to generate the unwar'd directory of your app (which you will need)

# cp $YOUR_REPISTORY/Rakefile .
# mkdir -p db/migrate
# cp $YOUR_REPISITORY/db/migrate/* db/migrate
# java -jar lib/jars/jruby-complete-1.3.1.jar -S rake db:migrate

Thats it.


Ed Allen said...

I'll probably be doing this pretty soon. Looks like we'll be moving an app to jRuby for warfile deployment next month.

for IT the said...

Great Article
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