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From Tomcat Random <tomcat.ran...@gmail.com>
Subject Re: Tomcat 6 lib jars
Date Thu, 05 Dec 2013 23:27:22 GMT
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 <dmikusa@gopivotal.com>wrote:

> On Dec 5, 2013, at 9:42 AM, "Patel, Rakesh (Java)" <
> Rakesh.Patel2@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
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