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I have a Grails application, built to a war file (~30mb). When I attempt to deploy the war file on Tomcat 6 via the application manager, it takes upwards of 10 minutes to deploy, or hangs indefinitely. When it hangs I can restart Tomcat and the app is usually deployed, however sometimes I have to repeat the process. I've also noticed that during deployment, the Java process maxes out the CPU and the RAM is at ~10-15%.
I'm fairly new to Java, so I don't know if this is normal, but I can't imagine how it could be. Is there something I can do to make this run smoother/faster? Is there a better way to deploy than Tomcat's app manager?
606
If your Tomcat takes longer to start, it may be due to the random number generator that it is using. You might want to consider forcing it to use '/dev/urandom' rather than the default '/dev/random' that Tomcat uses.
Java web applications are usually packaged as WAR files for deployment. These files can be created on the command line or with an IDE, like Eclipse. After deploying the WAR file, Tomcat unpacks it and stores all the project files from the webapps directory in a new directory named after the project.
I upload the WAR to my home directory, cd to /usr/local/tomcat, then run the following commands:
bin/shutdown.sh
rm webapps/ROOT.war
rm -rf webapps/ROOT
cp ~/ROOT.war webapps
bin/startup.sh
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