Ubuntu 12.10下安装icescrum需要首先安装tomcat7还有jdk，直接在ubuntu下面安装
apt-get install tomcat7
然后需要配置一下tomcat里面的环境变量，指定icescrum的配置文件路径，在文件/usr/share/tomcat7/bin/catalina.sh中开头添加一个设置：
JAVA_OPTS="-Djava.awt.headless=true -XX:MaxPermSize=1024m -Xmx1024m -Dicescrum_config_location=/opt/config.groovy"
最后的一个参数就是设置icescrum的配置文件路径。
当然该文件权限要设置一下，允许icescrum访问。
下载R5#5.1 版本的war包，复制到/var/lib/tomcat7/webapps目录后，tomcat7会自动解开war包。然后观察日志/var/lib/tomcat7/logs/icescrum.log文件：
2013-01-09 13:02:09,698 [localhost-startStop-1] ERROR org.springframework.web.context.ContextLoader - Context initialization failed
org.springframework.beans.factory.access.BootstrapException: Error executing bootstraps; nested exception is org.codehaus.groovy.runtime.InvokerInvocationException: java.io.IOE\
xception: No such file or directory
at org.codehaus.groovy.grails.web.context.GrailsContextLoader.createWebApplicationContext(GrailsContextLoader.java:87)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:197)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:618)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:963)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1600)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Caused by: org.codehaus.groovy.runtime.InvokerInvocationException: java.io.IOException: No such file or directory
at grails.spring.BeanBuilder.invokeBeanDefiningClosure(BeanBuilder.java:723)
at grails.spring.BeanBuilder.beans(BeanBuilder.java:573)
at grails.spring.BeanBuilder.invokeMethod(BeanBuilder.java:519)
... 6 more
Caused by: java.io.IOException: No such file or directory
at java.io.UnixFileSystem.createFileExclusively(Native Method)
at java.io.File.createNewFile(File.java:947)
at java_io_File$createNewFile.call(Unknown Source)
at org.icescrum.core.support.ApplicationSupport$__clinit__closure10.doCall(ApplicationSupport.groovy:119)
解决方法是到/usr/share/tomcat7目录下创建icescrum目录，然后设置权限：
chown tomcat7:tomcat7 -R ./icescrum/