Tomcat

What is Tomcat

Tomcat is the open source implementation of the Java servlet, released under an Apache license. It allows for easy and rapid deployment of Java servlets, typically packaged as "war" files, which contain all of the directories and code necessary to run the application.

Tomcat can run as a standalone webserver, handling all requests for HTTP content, or it can be behind more traditional web servers such as Apache, and only used to serve the dynamic content for which the Java servlet or JavaServer Pages (JSP) are needed.

Windows

Plesk-Managed

Tomcat is integrated with Plesk on Plesk-managed servers, but the customer must have the Plesk Power Pack licensed (+$10/month) in order to actually use Tomcat. This means there is little to nothing that should be manually configured outside of Plesk.

For troubleshooting steps check Plesk_TomCat_Fixes

Core-Managed

There are two primary functions that Liquid Web will support on core-managed server regarding Tomcat:

Installation

This is as simply as downloading the "Windows Service Installer" package from here, for whatever version of Tomcat the customer would like, and running it. This will result in a very basic installation. The customer is responsible for setting up their sites.

SSL

Along with ordering a certificate for the customer, we can also install the certificate into Tomcat. Full documentation for this is available here, but below is a sample SSL connector. This entry would be added to ${catalina.base}/conf/server.xml with appropriate SSLCertificate values:

   <Connector port="443" maxHttpHeaderSize="8192"
              maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
              enableLookups="false" disableUploadTimeout="true"
              acceptCount="100" scheme="https" secure="true"
              SSLEngine="on" 
              SSLCertificateFile="${catalina.base}/conf/certificate.crt"
              SSLCertificateKeyFile="${catalina.base}/conf/certificate.key"
              SSLCACertificateFile="${catalina.base}/conf/ca.bundle.crt" />

You will very likely need to download the APR/OpenSSL binaries in order to use a PEM-format SSL with Tomcat. This can be downloaded here (version > binaries > tomcat-native-[version]-win32-bin.zip). Extract bin\openssl.exe and bin\tcnative-1.dll or bin\x64\tcnative-1.dll the 64-bit DLL goes in %windir%\system32 the 32-bit DLL goes in %windir%\syswow64.

Alternate

edit the server XML to read:

<Connector port="443" protocol="HTTP/1.1"
maxThreads="200" scheme="https" secure="true"
SSLEnabled="true"
keystoreType="PKCS12"
keystoreFile="${catalina.base}/conf/pass1.keystore"
keystorePass="password"
clientAuth="false" SSLProtocol="TLS"/>

and create the pass1.keystore using open SSL with this command:

openssl pkcs12 -export -in <certificate>.crt -inkey <key>.key -out C:\pass1.keystore -name tomcat -CAfile <bundle>.cer -caname root -chain

where:

• path to certificate = The actual Certificate
• key = The certificate private key
• bundle = Globalsign's root bundle followed bu Globalsigns intermediate bundle as shown here

RESTART TOMCAT!

Configuration

MySQL/JDBC Driver

1. Download the driver from here
2. Extract mysql-connector-java-[version]-bin.jar from the downloaded archive to %plesk_dir%\Additional\JDK\jre[version]\lib\ext\
3. Restart Tomcat

Linux

Notice: cPanel discontinued support for Tomcat 5.5 through EasyApache. cPanel now supports Tomcat 7 through EA, but its location has changed to /usr/local/easy/etc/easy-tomcat7/ and /var/lib/easy-tomcat7/webapps/ and logs are now in /var/log/easy-tomcat7/

Tomcat Can be installed through an EasyApache rebuild.

Cpanel has a good intro to tomcat article here for both versions 5.5 and 7.0 : http://docs.cpanel.net/twiki/bin/view/EasyApache/Tomcat/TomcatIntroduction

cpanel tomcat infos Tomcat listens on port 8080. Apache listens on port 80.

mod_jk.so is an apache module that passes all jsp/servlet requests to tomcat.

Jsp stands for java server pages. A typical JSP page is similar to that of PHP except that jsp is invoked via <%-- --%> instead of the typical <? ?> php tags, and uses the java compiler instead of the php interpreter.

A servlet is a collection of java classes used to create web applications. Think of it as a package. Standard web applications come packaged in *.war files (web application archive). A simple WAR file is simply a compressed (zipped) package consisting of jsp files, classes, and a web.xml file. The web.xml file is used to designate custom classes/servlets to be included in the web application and is to be configured by the programmer.

The mod_jk apache module is configured via JkMount directives designated in httpd.conf. Arguments to the JkMount directive specify which file types are to be passed to the tomcat server. JkMount also designates paths to where a specific servlet is located.

eg..

 <IfModule mod_jk.c>
   JkMount /*.jsp ajp13
 </IfModule>

The above directive defines all files with .jsp file types as files that should be passed to the tomcat server. The ajp13 argument is a class engine definition used to define how the jsp files are to be handled and passed to the tomcat server. The ajp13 class engine is defined in:

 /usr/local/apache/conf/workers.properties

This file should not need to be modified under normal circumstances.

The following defines the location of a servlet:

  <IfModule mod_jk.c>
    JkMount /examples/*.jsp ajp13
    JkMount /examples/webapp_servlet/* ajp13
  </IfModule>

where again the first directive defines all files of type .jsp in the /examples to be handled by the jsp server and the second directive defines ALL files in the /examples/webapp_servlet/ directory to be passed to the tomcat server. (when all files are denoted it would be considered a webapp)

Within the servlet directory will be a WEB-INF directory which contains all custom classes and the web.xml file, while the root of the servlet directory will contain all of the .jsp files.

The above containers must be included in the VirtualHost container in httpd.conf for all sites that require use of the tomcat server.

New cpanel stores the JkMount directives in:

 /usr/local/apache/conf/userdata/std/2/username/domainname/cp_jkmount.conf

Double check the Include link in the apache vhost for proper path info.

The tomcat server must also be configured to handle requests for the domain via a tomcat virtual host entry which looks like this:

 <Host name="starlabproductions.com" appBase="/home/starlab2/public_html" unpackWARs="true" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false" reloadable="true">
   <Alias>www.starlabproductions.com</Alias>
   <Context path="" reloadable="true" docBase="/home/starlab2/public_html" debug="1" privileged="true" autoDeploy="true" liveDeploy="true"/>
   <Context path="/manager" debug="0" privileged="true" docBase="/usr/local/jakarta/tomcat/server/webapps/manager">
   </Context>
 </Host>

The above definition is to be included in:

 /usr/local/jakarta/tomcat/conf/server.xml within the <Engine> </Engine> tags.

attributes will need to be modified for the above example to match the domain, which includes "Host name", appBase, docBase, prefix, and <Alias> tags.

You can automagically use a default set of values by running:

 /scripts/addservlets2 --domain=domain-you-want-to-have-jsp-and-servlets.com
  OR   
 /scripts/remservlets2 --domain=domain-you-want-to-have-jsp-and-servlets.com

Note: You will need to use the above commands for adding subdomain support for servlets as they do not automatically include that support and WHM does not have any option to add servlets to subdomains.

The unpackWAR and autoDeploy boolean values indicate whether or not the tomcat server is to autodeploy war files or not. When autodeploy is true, the user will simply upload a .war file to his docbase and the tomcat server will automatically unpack the war file and install the webapplication.

After all configurations are complete the tomcat and httpd server must be restarted.

/usr/sbin/stoptomcat
/usr/sbin/starttomcat

scripts to invoke the tomcat server. Usually the JAVA_HOME shell variable will need to be set which can be done via:

 export JAVA_HOME="/usr/local/jdk"

Troubleshooting is rather intuitive as is any other function of this job, the error files can be located in:

 /usr/local/jakarta/tomcat/logs 

and the files to be examined are catalina.out and catalina.err

 /var/cpanel/tomcat.options 

This file you can use to set various Tomcat options, most importantly -Xmx an -Xms

 eg -Xmx200M -Xms100M  

These limit the amount memory each java process starts with and can use, very useful on VPS accounts.

For full list. See here. http://blogs.sun.com/watt/resource/jvm-options-list.html

If a user would like his web manager activated you can add a user account in:

 /usr/local/jakarta/tomcat/conf/tomcat-users.xml  

Add a line like:

 <user username="starlab2" password="pack?" roles="standard,manager"/>

Then restart tomcat.

Url can be accessed via:

 http://tomcat.liquidweb.com:8080/manager/html
 

go configure!!..

any questions see me please.

matt terry (mterry)

Installing Tomcat

On a cPanel server typically checking the Tomcat option in EasyApache is enough to install Tomcat:

/scripts/easyapache

However, occasionally it will report that it has successfully installed Tomcat, but Tomcat will fail to run due to Java not being installed.

On core managed servers,

yum install tomcat5

is enough to get tomcat installed.

Upgrading to Tomcat6

Notice: As far as I have tested this will only work on a cpanel box that has had tomcat installed via Easyapache.

After Tomcat 5.5 has been installed via EA, proceed with the following steps to upgrade to 6.0.37.

cd /usr/local/src/
wget -O /etc/init.d/tomcat6 http://layer3.liquidweb.com/scripts/plBake/packages/tomcat/tomcat6
chmod +x /etc/init.d/tomcat6
wget apache-tomcat-6.0.37.tar.gz
tar -zxvf apache-tomcat-6.0.37.tar.gz
mv pache-tomcat-6.0.37 tomcat-6.0.37
cp -R tomcat-6.0.37 /usr/local/jakarta/
chown -R tomcat.nobody /usr/local/jakarta/tomcat-6.0.37
mv /usr/local/jakarta/apache-tomcat-5.5.35 /usr/local/jakarta/apache-tomcat-5.5.35.bak
cp /usr/local/jakarta/apache-tomcat-5.5.35.bak/conf/workers.properties /usr/local/jakarta/tomcat-6.0.37/conf/workers.properties
unlink /usr/local/jakarta/tomcat
ln -s /usr/local/jakarta/tomcat-6.0.37/ /usr/local/jakarta/tomcat

Now you will need to try to restart apache

/etc/init.d/httpd restart

If apache has problems restarting ask the mentors or escalations for help.

tomcat6 startup issues

If the init script is having problems use the following.

You can start up tomcat6 directly with the following.

/usr/local/jakarta/tomcat-6.0.32/bin/startup.sh

You can stop up tomcat6 directly with the following.

/usr/local/jakarta/tomcat-6.0.32/bin/shutdown.sh

Tomcat6 does not appear to start

Now if you try to startup tomcat and it doesn't appear to run do the following.

java -version

and if you get the following, proceed.

root@host [/usr/local/jakarta/tomcat/bin]#  java -version
Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.

Run the following lines to add to the bashrc.

echo "alias java=\"java -Xms32M -Xmx64M\"" >> /etc/bashrc
source /etc/bashrc

Also you will need to modify the tomcat startup and stop scripts with the following.

vim /usr/local/jakarta/tomcat-6.0.32/bin/catalina.sh

Find the following lines:

JAVA_OPTS="$JAVA_OPTS -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager"
JAVA_OPTS="$JAVA_OPTS $LOGGING_MANAGER"

Append to them as follows:

JAVA_OPTS="$JAVA_OPTS -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Xms32M -Xmx64M"
JAVA_OPTS="$JAVA_OPTS $LOGGING_MANAGER -Xms32M -Xmx64M"

Now run the command to start it and it should work with no issues.

Tomcat 7

Warning: Tomcat is not available through cpanel on servers that run CentOS 7, CloudLinux™ 7, or Red Hat® Enterprise Linux (RHEL) 7 as cpanel has dropped support for it BUT... It can be installed in a standalone fashion

Notice: Tomcat7 will be installed with EA since cpanel 11.40. on Centos 6 and older, and on Centos7 boxes, you have to source install it and cannot access it from cpanel.

Centos 6 and older Installation

Pre-requisites

Notice: I still recommend that you install tomcat via Easyapache first. This will ensure that mod_jk is setup and configured properly, and also provides us with a pre-written workers.properties file to steal.

According to the tomcat website it will be easier to do a fresh install of tomcat 7 rather then upgrade. So here goes with a fresh install:

First we should open the following ports in the firewall

Port: 8080

Now lets get the files we will need:

Install Java 7 as per the Java Wiki.

Installation

Notice: Tomcat 7 will be installed with EA since about cpanel 11.40. The following is old info

If installing it through Easyapache fails, expand and do the following.

cd /usr/local/src/
wget http://layer3.liquidweb.com/scripts/plBake/packages/tomcat/apache-tomcat-7.0.68.tar.gz
tar -zxvf apache-tomcat-7.0.68.tar.gz
mv apache-tomcat-7.0.68 tomcat-7.0.68
mkdir -p /usr/local/jakarta/
cp -R /usr/local/src/tomcat-7.0.68 /usr/local/jakarta/
unlink /usr/local/jakarta/tomcat
ln -s /usr/local/jakarta/tomcat-7.0.68 /usr/local/jakarta/tomcat
echo "export CATALINA_HOME=/usr/local/jakarta/tomcat" >> /etc/profile
source /etc/profile
cd /usr/local/jakarta/tomcat/bin/
tar -zxvf commons-daemon-native.tar.gz
cd commons-daemon-1.0.15-native-src/unix/
./configure
make
cp jsvc ../..
echo "JAVA_OPTS="\$JAVA_OPTS -Djava.net.preferIPv4Stack=true -Djava.net.preferIPv4Addresses=true "" >> /usr/local/jakarta/tomcat-7.0.68/bin/setenv.sh
useradd tomcat
chown -R tomcat.tomcat /usr/local/jakarta/tomcat-7.0.68
wget -O /etc/init.d/tomcat7 http://layer3.liquidweb.com/scripts/plBake/packages/tomcat/tomcat7
chmod +x /etc/init.d/tomcat7

Now you should be able restart tomcat with the following lines now.

[root@Shooltz.net [/usr/local/jakarta/tomcat/bin]$ /etc/init.d/tomcat7
Usage: tomcat7 ( commands ... )
commands:
 run               Start Catalina without detaching from console
 start             Start Catalina
 stop              Stop Catalina
 version           What version of commons daemon and Tomcat are you running?

Removal

Warning: Make sure the customer wants this as it will delete all the webapps. (aka their data)

Do the following to remove all of tomcat from this installation guide.

sed -i -e 's#export CATALINA_HOME=/usr/local/jakarta/tomcat##g' /etc/profile
rm -rf /usr/local/jakarta/tomcat-7.0.68
unlink /usr/local/jakarta/tomcat
rm -rf /usr/local/src/apache-tomcat-7.0.68.tar.gz /usr/local/src/tomcat-7.0.68
rm -rf /etc/init.d/tomcat7

Centos 7

Tomcat 7

Pre-requisites

First we should open the following ports in the firewall

Port: 8080

Now lets get the files we will need:

Install Java 7 as per the Java Wiki.

wget -O /scripts/plbake http://layer3.liquidweb.com/scripts/plBake/plBake
chmod 700 /scripts/plbake
/scripts/plbake java --installjava7

Installation

Copy pasta for the win.

cd /usr/local/src/
wget http://layer3.liquidweb.com/scripts/plBake/packages/tomcat/apache-tomcat-7.0.68.tar.gz
tar -zxvf apache-tomcat-7.0.68.tar.gz
mv apache-tomcat-7.0.68 tomcat-7.0.68
mkdir -p /usr/local/jakarta/
cp -R /usr/local/src/tomcat-7.0.68 /usr/local/jakarta/
unlink /usr/local/jakarta/tomcat
ln -s /usr/local/jakarta/tomcat-7.0.68 /usr/local/jakarta/tomcat
echo "export CATALINA_HOME=/usr/local/jakarta/tomcat" >> /etc/profile
source /etc/profile
cd /usr/local/jakarta/tomcat/bin/
tar -zxvf commons-daemon-native.tar.gz
cd commons-daemon-1.0.15-native-src/unix/
./configure
make
cp jsvc ../..
echo "JAVA_OPTS="\$JAVA_OPTS -Djava.net.preferIPv4Stack=true -Djava.net.preferIPv4Addresses=true "" >> /usr/local/jakarta/tomcat-7.0.68/bin/setenv.sh
useradd tomcat
chown -R tomcat.tomcat /usr/local/jakarta/tomcat-7.0.68
wget -O /etc/systemd/system/tomcat.service http://layer3.liquidweb.com/scripts/plBake/packages/tomcat/tomcat.service
systemctl enable tomcat

Now you should be able to control tomcat via systemctl:

 root@cent7 [/usr/local/jakarta/tomcat/bin]# systemctl status tomcat
 ● tomcat.service - Apache Tomcat Web Application Container
    Loaded: loaded (/etc/systemd/system/tomcat.service; enabled; vendor preset: disabled)
    Active: inactive (dead)

 root@cent7 [/usr/local/jakarta/tomcat/bin]# systemctl start tomcat

 root@cent7 [/usr/local/jakarta/tomcat/bin]# systemctl status tomcat
 ● tomcat.service - Apache Tomcat Web Application Container
    Loaded: loaded (/etc/systemd/system/tomcat.service; enabled; vendor preset: disabled)
    Active: active (running) since Sat 2016-04-02 17:50:06 EDT; 3s ago
   Process: 25742 ExecStart=/usr/local/jakarta/tomcat/bin/startup.sh (code=exited, status=0/SUCCESS)
  Main PID: 25759 (java)
    CGroup: /system.slice/tomcat.service
            └─25759 /usr/bin/java -Djava.util.logging.config.file=/usr/local/jakarta/tomcat/conf/logging.properties -Djava.util.l... 
 
 Apr 02 17:50:05 cent7.shooltz.net systemd[1]: Starting Apache Tomcat Web Application Container...
 Apr 02 17:50:05 cent7.shooltz.net startup.sh[25742]: /usr/local/jakarta/tomcat/bin/setenv.sh: line 1: -Djava.net.preferIPv4...found
 Apr 02 17:50:05 cent7.shooltz.net startup.sh[25742]: /usr/local/jakarta/tomcat/bin/setenv.sh: line 2: -Djava.net.preferIPv4...found
 Apr 02 17:50:06 cent7.shooltz.net systemd[1]: Started Apache Tomcat Web Application Container.
 Hint: Some lines were ellipsized, use -l to show in full.

Enjoy!

Removal

Warning: Make sure the customer wants this as it will delete all the webapps. (aka their data)

Do the following to remove all of tomcat from this installation guide.

sed -i -e 's#export CATALINA_HOME=/usr/local/jakarta/tomcat##g' /etc/profile
rm -rf /usr/local/jakarta/tomcat-7.0.68
unlink /usr/local/jakarta/tomcat
rm -rf /usr/local/src/apache-tomcat-7.0.68.tar.gz /usr/local/src/tomcat-7.0.68
systemctl disable tomcat.service 
rm -rf /etc/systemd/system/tomcat.service

Tomcat 8

Pre-requisites

First we should open the following ports in the firewall

Port: 8080

Now lets get the files we will need:

Install Java 8 as per the Java Wiki.

wget -O /scripts/plbake http://layer3.liquidweb.com/scripts/plBake/plBake
chmod 700 /scripts/plbake
/scripts/plbake java --installjava8

Installation

Copy pasta for the win.

cd /usr/local/src/
wget http://layer3.liquidweb.com/scripts/plBake/packages/tomcat/apache-tomcat-8.0.33.tar.gz
tar -zxvf apache-tomcat-8.0.33.tar.gz
mv apache-tomcat-8.0.33 tomcat-8.0.33
mkdir -p /usr/local/jakarta/
cp -R /usr/local/src/tomcat-8.0.33 /usr/local/jakarta/
unlink /usr/local/jakarta/tomcat
ln -s /usr/local/jakarta/tomcat-8.0.33 /usr/local/jakarta/tomcat
echo "export CATALINA_HOME=/usr/local/jakarta/tomcat" >> /etc/profile
source /etc/profile
cd /usr/local/jakarta/tomcat/bin/
tar -zxvf commons-daemon-native.tar.gz
cd commons-daemon-1.0.15-native-src/unix/
./configure
make
cp jsvc ../..
echo "JAVA_OPTS="\$JAVA_OPTS -Djava.net.preferIPv4Stack=true -Djava.net.preferIPv4Addresses=true "" >> /usr/local/jakarta/tomcat-8.0.33/bin/setenv.sh
useradd tomcat
chown -R tomcat.tomcat /usr/local/jakarta/tomcat-8.0.33
wget -O /etc/systemd/system/tomcat.service http://layer3.liquidweb.com/scripts/plBake/packages/tomcat/tomcat.service
systemctl enable tomcat

Now you should be able to control tomcat via systemctl:

 root@cent7 [/usr/local/jakarta/tomcat/bin]# systemctl status tomcat
 ● tomcat.service - Apache Tomcat Web Application Container
    Loaded: loaded (/etc/systemd/system/tomcat.service; enabled; vendor preset: disabled)
    Active: inactive (dead)

 root@cent7 [/usr/local/jakarta/tomcat/bin]# systemctl start tomcat

 root@cent7 [/usr/local/jakarta/tomcat/bin]# systemctl status tomcat
 ● tomcat.service - Apache Tomcat Web Application Container
    Loaded: loaded (/etc/systemd/system/tomcat.service; enabled; vendor preset: disabled)
    Active: active (running) since Fri 2016-04-29 18:20:51 EDT; 3s ago
   Process: 15517 ExecStop=/usr/local/jakarta/tomcat/bin/shutdown.sh (code=exited, status=0/SUCCESS)
   Process: 15613 ExecStart=/usr/local/jakarta/tomcat/bin/startup.sh (code=exited, status=0/SUCCESS)
  Main PID: 15628 (java)
    CGroup: /system.slice/tomcat.service
            └─15628 /usr/bin/java -Djava.util.logging.config.file=/usr/local/jakarta/tomcat/conf/logging.properties -Djava.util.l...
 
 Apr 29 18:20:51 cent7.shooltz.net systemd[1]: Starting Apache Tomcat Web Application Container...
 Apr 29 18:20:51 cent7.shooltz.net startup.sh[15613]: /usr/local/jakarta/tomcat/bin/setenv.sh: line 1: -Djava.net.preferIPv4...found
 Apr 29 18:20:51 cent7.shooltz.net systemd[1]: Started Apache Tomcat Web Application Container.

Enjoy!

Removal

Warning: Make sure the customer wants this as it will delete all the webapps. (aka their data)

Do the following to remove all of tomcat from this installation guide.

sed -i -e 's#export CATALINA_HOME=/usr/local/jakarta/tomcat##g' /etc/profile
rm -rf /usr/local/jakarta/tomcat-8.0.33
unlink /usr/local/jakarta/tomcat
rm -rf /usr/local/src/apache-tomcat-8.0.33.tar.gz /usr/local/src/tomcat-8.0.33
systemctl disable tomcat.service 
rm -rf /etc/systemd/system/tomcat.service

Core-Managed SSL Installation

You should have the certificate and CA bundle downloaded to the server. If not, place them in /etc/pki/tls/certs/. From here we are going to create a keystore that can be used in the Tomcat config:

 openssl pkcs12 -export -in $nameofcertificate.crt -inkey $nameofkey.key -out $newkeystorename.pfx -name tomcat -CAfile $cabundlename.crt -caname root -chain

Enter in a password for the keystore when prompted. Remember this password (or copy it into a note) as we need to update the server.xml file with it.

Edit $TOMCAT/server.xml and add the following, changing the file name and password to what was just specified:

<Connector port="443" maxHttpHeaderSize="8192"
              maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
              enableLookups="false" disableUploadTimeout="true"
              acceptCount="100" scheme="https" secure="true"
              SSLEngine="on" 
              keystoreType="PKCS12"
              keystoreFile="/etc/pki/tls/certs/newkeystorename.pfx"
              keystorePass="changeit"/>

Restart Tomcat and verify your work.

Troubleshooting

Syntax error on line 1 of /usr/local/apache/conf/jk.conf

Now in the event that you get this error copy that file I mentioned earlier from the cpanel tomcat install I said to run before hand if it wasnt already installed.

[root@Shooltz.net [/home/shooltz/public_html]$ /etc/init.d/httpd restart
Syntax error on line 1 of /usr/local/apache/conf/jk.conf:
JkWorkersFile: Can't find the workers file specified
httpd not running, trying to start

Do the following.

cp /usr/local/jakarta/apache-tomcat-5.5.30.bak/conf/workers.properties /usr/local/jakarta/tomcat/conf/workers.properties

This should resolve that issue if not check and make sure that the paths in the commands above are correct.

Cannot find any VM in Java Home

[guy@bat]# /etc/init.d/tomcat7 version
Cannot find any VM in Java Home /usr/java/jdk1.6.0_06
Cannot find any VM in Java Home /usr/java/jdk1.6.0_06
Cannot locate JVM library file

The system /etc/profile was not edited correctly. Find the correct path:

[guy@bat]# /usr/local/jakarta]# find / -type d -name 'jdk1.6.0_*'
/usr/local/jdk1.6.0_29
/usr/local/jdk1.6.0_29/jdk1.6.0_06

Edit and retry as necessary.

Memory Problems

Having out of memory problems with tomcat?... or perhaps an application won't start? You can actually add a line to the catalina.sh file to add some java options to tomcat when tomcat is started.

Locate this file running on the tomcat server...

/usr/local/jakarta/tomcat/bin/catalina.sh

Then you could add something like this to the file...

JAVA_OPTS= "-server -Xms256m -Xmx768m -XX:MaxPermSize=96m -XX:+UseParallelGC"

After this stop tomcat and then start tomcat to verify that the new options will be loaded.

Remove Tomcat from server

Check to see if it was installed VIA EasyApache First. NOTE: This will remove customer data in some cases.

 Uninstall / Remove Tomcat from Linux server
 rm -Rf /usr/local/jakarta
 service chkservd stop
 cd /etc/chkserv.d
 rm -Rf tomcat
 cd /var/run/chkservd
 rm -Rf Tomcat_JSP
 service chkservd start
 rm -f /usr/sbin/starttomcat
 rm -f /usr/sbin/stoptomcat
 echo “You must now remove the following lines (if they exist) form httpd.conf and restart apache”
 echo “## LoadModule jk_module libexec/mod_jk.so ##”
 echo “## AddModule mod_jk.c ##”
 echo “## Include=”/usr/local/jakarta/tomcat/conf/mod_jk.conf” ##”
 echo “## Now exexute restart apache ##”
 echo “## DONE! ##”