Howdy, Just out of curiosity, why couldn't you move to JDK 1.4 (so you could add -Djava.awt.headless=true)?
Yoav Shapira Millennium ChemInformatics >-----Original Message----- >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] >Sent: Wednesday, October 22, 2003 3:29 PM >To: [EMAIL PROTECTED] >Subject: [SOLVEDRE] : UNIX+Apache+Tomcat Situtation > >Daniel, >Thank you for your excellent response. :) By the time I got it though I was >pretty much resolved to the idea that it was not a UNIX permission issue at >all. As I had many hours(read sore shoulder) into throwing every UNIX >permission switch in the book. Btw, it an HP environment but this solution >could apply to any *NIX setup. > >The error was actually occuring in the graphics library JFreeChart. When >the >developer logged into the workstation physically at the console and then >started Tomcat the graphics libraries in JFreeChart were able to draw to >X11. There was a 'head'. But remote users like root or tomcat_user were >'headless'. Hence the graphics methods failed because they were unable to >draw to a 'window'. > >The solution is to install PJA libraries from http://www.eteks.com/pja/en/ >which remedy the need to draw to a window. Note, this issue is resolved by >installing JDK 1.4 too but this was not an option. The situation is >possibly >better explained by this para from the PJA site; > >"When no X11 Display is available on a UNIX machine (also called headless >environment) or when GDI resources are low on Windows, it is impossible to >compute off-screen images with java.awt.Graphics methods under a JDK >version >< 1.4, even if your program doesn't need to display these images. >Typically, >this situation happens for servlets returning dynamically generated images >like pies, charts or web counters. >With PJA, you don't need to change your Java programs that you expected to >run : setting java.awt system property to com.eteks.awt.PJAToolkit is the >only required modification to your program with Java 1.1 (see PJA FAQ and >com.eteks.awt.PJAToolkit class documentation for more information)." > >Regards, >Earle > >-----Original Message----- >From: Daniel Gibby [mailto:[EMAIL PROTECTED] >Sent: Tuesday, October 21, 2003 3:48 PM >To: Tomcat Users List >Subject: Re: UNIX+Apache+Tomcat Situtation > > >This really sounds like it is a unix permissions issue, but it could be >a Security issue with java as well. I don't know as much about the java >Security model, but I can tell you things to check for with unix >permissions: > >So if 'developer' is the owner of the tomcat directory, and your webapps >and all files that are trying to be written are under that directory, it >sounds like it works fine for you when 'developer' starts tomcat- so >tomcat is run as the developer user, and since developer has rights to >create files under that directory, it works fine. >On the other hand your tomcat user doesn't sound like it has rights. > >I would suggest that you always run tomcat as the tomcat user, and make >developer and root start it as the tomcat user. >That can be easily done with a startup script instead of calling >$TOMCAT_HOME/bin/startup.sh directly or whatever it is. >I would make sure that the directories all have the tomcat user as the >owner and group, and then add root and developer to that group. > >What Unix is this? Linux? Solaris? >Here is the format to make tomcat run as the tomcat user with a >/etc/rc.d/tomcat > >I also have catalina.out automatically rotated every time I start tomcat. > >#!/bin/sh > ################################################################## > ># Comments to support chkconfig on RedHat Linux ># chkconfig: 2345 84 84 ># description: A very fast and reliable J2EE Servlet Container. > > >timestamp=`date +%Y-%m-%d-%H%M%S` >echo "timestamp= $timestamp" > >LD_ASSUME_KERNEL=2.2.5 >export LD_ASSUME_KERNEL >echo "LD_ASSUME_KERNEL= $LD_ASSUME_KERNEL" > >JAVA_HOME=/usr/local/java >export JAVA_HOME >echo "JAVA_HOME= $JAVA_HOME" > >CLASSPATH=/usr/local/java/jre/lib/core.jar:/usr/local/java/jre/lib/serv er.j >a >r >export CLASSPATH >echo "CLASSPATH= $CLASSPATH" > >TOMCAT_HOME=/usr/local/jakarta-tomcat >export TOMCAT_HOME >echo "TOMCAT_HOME= $TOMCAT_HOME" > >#CATALINA_OPTS="-Xms196m -Xmx896m -Dbuild.compiler.emacs=true" >#export CATALINA_OPTS >#echo "CATALINA_OPTS= $CATALINA_OPTS" > > case $1 in > 'start') > su tomcat4 -c "mv $TOMCAT_HOME/logs/catalina.out >$TOMCAT_HOME/logs/catalina.$timestamp" > su tomcat4 -c "$TOMCAT_HOME/bin/startup.sh" > sleep 10 > /usr/sbin/apachectl graceful > ;; > 'stop') > su tomcat4 -c "$TOMCAT_HOME/bin/shutdown.sh" > ;; > 'status') > ps auxw | fgrep tomcat | fgrep -v status | fgrep -v grep | fgrep -v >tail > ;; > *) > echo "usage: $0 {start|stop|status}" > ;; > esac ># END OF /etc/rc.d/tomcat > >Daniel > > >[EMAIL PROTECTED] wrote: > >>Hello, >>I have a situation where if a developer owns Tomcat 3 and stops/starts >>server the apps on that server all j2ee web-apps run fine. If I as root or >>'tomcat_user' or su to developer id stop/start Tomcat 3 then all j2ee >>web-apps run except modules that produce .jpegs dynamically. In the latter >>case Tomcat was setup so that the user who stop/started Tomcat owned all >>file/directories. >> >>My first response was to make all files/directories world >>read,write,execute. It must be a UNIX permission thing right. Also I >umask'd >>and source'd the UNIX personal env of each user to be world >>read,write,execute on any directories/files created but still no >difference, >>the graphs are not displayed. The graph libs are using JFreechart, btw. >> >>This is a long running issue and I would appreciate any help as I am not >>sure if this is a UNIX or Tomcat or JFreechart issue. Any suggestions? Why >>would I not be able to remotely log into box, su - to developer id and >>stop/start Tomcat with all apps functioning? Also, developer's personal >UNIX >>acct is basic stock settings with no extra frills. >> >>Regards, >>Earle >> >>--------------------------------------------------------------------- >>To unsubscribe, e-mail: [EMAIL PROTECTED] >>For additional commands, e-mail: [EMAIL PROTECTED] >> >> > > > >--------------------------------------------------------------------- >To unsubscribe, e-mail: [EMAIL PROTECTED] >For additional commands, e-mail: [EMAIL PROTECTED] > >--------------------------------------------------------------------- >To unsubscribe, e-mail: [EMAIL PROTECTED] >For additional commands, e-mail: [EMAIL PROTECTED] This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. 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