Dan, +1. I can't imagine what kind of headaches are waiting around with all the symbolic links for the JARs.
-Alec On Thu, Dec 5, 2013 at 10:03 AM, Daniel Mikusa <dmik...@gopivotal.com>wrote: > On Dec 5, 2013, at 9:42 AM, "Patel, Rakesh (Java)" < > rakesh.pat...@bskyb.com> wrote: > > > Hi, > > > > I've come across lots of duplicate jars in the tomcat/lib directory on > the servers we have been given by our infrastructure people. > > > > The directory looks like this: > > > > -rw-r--r-- 1 root root 15153 Jul 20 2011 annotations-api-6.0.24.jar > > lrwxrwxrwx 1 root root 26 Oct 29 17:05 annotations-api.jar -> > annotations-api-6.0.24.jar > > -rw-r--r-- 1 root root 1205728 Jul 20 2011 catalina-6.0.24.jar > > -rw-r--r-- 1 root root 54149 Jul 20 2011 catalina-ant-6.0.24.jar > > lrwxrwxrwx 1 root root 23 Oct 29 17:05 catalina-ant.jar -> > catalina-ant-6.0.24.jar > > -rw-r--r-- 1 root root 130751 Jul 20 2011 catalina-ha-6.0.24.jar > > lrwxrwxrwx 1 root root 22 Oct 29 17:05 catalina-ha.jar -> > catalina-ha-6.0.24.jar > > lrwxrwxrwx 1 root root 19 Oct 29 17:05 catalina.jar -> > catalina-6.0.24.jar > > -rw-r--r-- 1 root root 235744 Jul 20 2011 catalina-tribes-6.0.24.jar > > lrwxrwxrwx 1 root root 26 Oct 29 17:05 catalina-tribes.jar -> > catalina-tribes-6.0.24.jar > > lrwxrwxrwx 1 root root 39 Oct 29 17:05 commons-collections.jar -> > /usr/share/java/commons-collections.jar > > lrwxrwxrwx 1 root root 32 Oct 29 17:05 commons-dbcp.jar -> > /usr/share/java/commons-dbcp.jar > > lrwxrwxrwx 1 root root 32 Oct 29 17:05 commons-pool.jar -> > /usr/share/java/commons-pool.jar > > -rw-r--r-- 1 root root 533217 Jul 20 2011 jasper-6.0.24.jar > > -rw-r--r-- 1 root root 108903 Jul 20 2011 jasper-el-6.0.24.jar > > lrwxrwxrwx 1 root root 20 Oct 29 17:05 jasper-el.jar -> > jasper-el-6.0.24.jar > > lrwxrwxrwx 1 root root 17 Oct 29 17:05 jasper.jar -> > jasper-6.0.24.jar > > lrwxrwxrwx 1 root root 23 Oct 29 17:05 jasper-jdt.jar -> > /usr/share/java/ecj.jar > > lrwxrwxrwx 1 root root 25 Oct 29 17:05 log4j.jar -> > /usr/share/java/log4j.jar > > lrwxrwxrwx 1 root root 33 Oct 29 17:05 mx4j-jmx.jar -> > /usr/share/java/mx4j/mx4j-jmx.jar > > lrwxrwxrwx 1 root root 36 Oct 29 17:05 mx4j-remote.jar -> > /usr/share/java/mx4j/mx4j-remote.jar > > -rw-r--r-- 1 root root 832960 Oct 29 17:07 > mysql-connector-java-5.1.22-bin.jar > > lrwxrwxrwx 1 root root 59 Oct 29 17:07 mysql-connector-java.jar -> > /usr/share/java/tomcat6/mysql-connector-java-5.1.22-bin.jar > > -rw-r--r-- 1 root root 26083 Oct 29 17:07 slf4j-api-1.7.2.jar > > lrwxrwxrwx 1 root root 43 Oct 29 17:07 slf4j-api.jar -> > /usr/share/java/tomcat6/slf4j-api-1.7.2.jar > > -rw-r--r-- 1 root root 8819 Oct 29 17:07 slf4j-log4j12-1.7.2.jar > > lrwxrwxrwx 1 root root 47 Oct 29 17:07 slf4j-log4j12.jar -> > /usr/share/java/tomcat6/slf4j-log4j12-1.7.2.jar > > lrwxrwxrwx 1 root root 32 Oct 29 17:05 > tomcat6-el-2.1-api-6.0.24.jar -> ../tomcat6-el-2.1-api-6.0.24.jar > > lrwxrwxrwx 1 root root 33 Oct 29 17:05 > tomcat6-jsp-2.1-api-6.0.24.jar -> ../tomcat6-jsp-2.1-api-6.0.24.jar > > lrwxrwxrwx 1 root root 37 Oct 29 17:05 > tomcat6-servlet-2.5-api-6.0.24.jar -> ../tomcat6-servlet-2.5-api-6.0.24.jar > > -rw-r--r-- 1 root root 768357 Jul 20 2011 tomcat-coyote-6.0.24.jar > > lrwxrwxrwx 1 root root 24 Oct 29 17:05 tomcat-coyote.jar -> > tomcat-coyote-6.0.24.jar > > -rw-r--r-- 1 root root 69826 Jul 20 2011 tomcat-i18n-es-6.0.24.jar > > lrwxrwxrwx 1 root root 25 Oct 29 17:05 tomcat-i18n-es.jar -> > tomcat-i18n-es-6.0.24.jar > > -rw-r--r-- 1 root root 51772 Jul 20 2011 tomcat-i18n-fr-6.0.24.jar > > lrwxrwxrwx 1 root root 25 Oct 29 17:05 tomcat-i18n-fr.jar -> > tomcat-i18n-fr-6.0.24.jar > > -rw-r--r-- 1 root root 54441 Jul 20 2011 tomcat-i18n-ja-6.0.24.jar > > lrwxrwxrwx 1 root root 25 Oct 29 17:05 tomcat-i18n-ja.jar -> > tomcat-i18n-ja-6.0.24.jar > > lrwxrwxrwx 1 root root 38 Oct 29 17:05 tomcat-juli.jar -> > /usr/share/tomcat6/bin/tomcat-juli.jar > > > > You'll notice generic jar names sum linked to specific jars AND the > specific jar also in the directory. > > > > Is this harmless? Or should I ask for a 'cleaner' install from the > apache website? I believe this installation comes from the central CentOS6 > repository. > > Minimally, I would ask for an up-to-date version of Tomcat. The libraries > seem to indicate that 6.0.24 is installed and that's pretty old now. As > for the latest 6.0.x release. > > As far as the duplicate JAR files, one situation off the top of my head > where it could cause problems is if the versions are different. For > example, if the JAR file in the lib folder is version X and the symlink > points to version Y. This is problematic because you would have no idea > which version of the JAR is going to be loaded. You'd want one or the > other, either the file or the symlink. > > Personally, and I think many people on the list would agree, I'd suggest > against using the installation from your distro's repository. They're > typically way out-of-date (see my comment above) and they tend to put files > in weird places. At least weird relative to the standard installation that > is available from tomcat.apache.org. While having files in weird places > may not directly cause problems, it does make it more difficult for people > on this list to help when you have a problem. > > Dan > > > > > Thanks > > > > Rakesh > > Information in this email including any attachments may be privileged, > confidential and is intended exclusively for the addressee. The views > expressed may not be official policy, but the personal views of the > originator. If you have received it in error, please notify the sender by > return e-mail and delete it from your system. You should not reproduce, > distribute, store, retransmit, use or disclose its contents to anyone. > Please note we reserve the right to monitor all e-mail communication > through our internal and external networks. SKY and the SKY marks are > trademarks of British Sky Broadcasting Group plc and Sky International AG > and are used under licence. 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