David Ghedini

Linux, Java, Oracle, and PostgreSQL


David Ghedini

Thursday May 26, 2011

Installing Tomcat 7 on Slackware 13

This entry will cover installing and configuration of Tomcat 7 on Slackware 13

It will also work for Tomcat 6.x.

We'll install the JDK, Tomcat, create a start/stop script, and configure Tomcat to run as a service and start at boot.

For this installation, we'll use Tomcat 7.0.14, the current release of Tomcat 7.

To begin, we'll install the Java Development Kit (JDK) 1.6 update 25

JDK 1.6 is the minimum JDK version required for Tomcat 7.


Step 1: Install the JDK


Download the JDK here: http://www.oracle.com/technetwork/java/javase/downloads/index.html

We'll use the latest, JDK 6 Update 25. The JDK is specific to 32 and 64 bit versions.

My Slackware box is 32 bit, so I'll need: jdk-6u25-linux-i586.bin

If you are on 32 bit, you'll need: jdk-6u25-linux-x64.bin

Download the JDK and save it to a directory. I'm saving it to /opt.


Create a new directory /usr/java.
root@slackd:~# mkdir /usr/java  

Change to the /usr/java directory we created and install the JDK using 'sh /opt/jdk-6u25-linux-i586.bin'
root@slackd:~# cd /usr/java
root@slackd:/usr/java# sh /opt/jdk-6u25-linux-i586.bin

Set the JAVA_HOME path to the location we installed our JDK above.

To set it for your current session, you can issue the following from the CLI:
root@slackd:/usr/java# JAVA_HOME=/usr/java/jdk1.6.0_25
root@slackd:/usr/java# export JAVA_HOME
root@slackd:/usr/java# PATH=$JAVA_HOME/bin:$PATH
root@slackd:/usr/java# export PATH
Step 2: Download and Unpack Tomcat 7.0.14


Download apache-tomcat-7.0.14.tar.gz here

Save the file to the /usr/share directory In the /usr/share directory, unpack the file using tar -xzf:

root@slackd:~# cd /usr/share
root@slackd:/usr/share# tar -xzf apache-tomcat-7.0.14.tar.gz  
This will create the directory /usr/share/apache-tomcat-7.0.14

Step 3: Configuring Tomcat to Run as a Service.


We will now create a simple Start/Stop/Restart script and configure Tomcat to run as a service. We will also configure Tomcat to start at boot.

Change to the /etc/rc.d directory and create a script called 'tomcat' as shown below.

root@slackd:~# cd /etc/rc.d
root@slackd:/etc/rc.d# vi rc.tomcat
#!/bin/bash
JAVA_HOME=/usr/java/jdk1.6.0_25
export JAVA_HOME
PATH=$JAVA_HOME/bin:$PATH
export PATH
CATALINA_HOME=/usr/share/apache-tomcat-7.0.14

case $1 in
start)
sh $CATALINA_HOME/bin/startup.sh
;; 
stop)   
sh $CATALINA_HOME/bin/shutdown.sh
;; 
restart)
sh $CATALINA_HOME/bin/shutdown.sh
sh $CATALINA_HOME/bin/startup.sh
;; 
esac    
exit 0
In the above script, we are simply calling the startup.sh and shutdown.sh scripts located in the Tomcat bin directory (/usr/share/apache-tomcat-7.0.14/bin).

CATALINA_HOME is the Tomcat home directory (/usr/share/apache-tomcat-7.0.14)

Now, set the permissions for your script to make it executable:

root@slackd: /etc/rc.d# chmod 755 tomcat
We can now run tomcat as a background service using: /etc/rc.d/rc.tomcat start | stop | restart

Test our script.

Start Tomcat:
root@slackd:~# /etc/rc.d/rc.tomcat start
Using CATALINA_BASE:   /usr/share/apache-tomcat-7.0.14
Using CATALINA_HOME:   /usr/share/apache-tomcat-7.0.14
Using CATALINA_TMPDIR: /usr/share/apache-tomcat-7.0.14/temp
Using JRE_HOME:        /usr/java/jdk1.6.0_25
Using CLASSPATH:       /usr/share/apache-tomcat-7.0.14/bin/bootstrap.jar:/usr/share/apache-tomcat-7.0.14/bin/tomcat-juli.jar
Stop Tomcat:

root@slackd:~# /etc/rc.d/rc.tomcat stop
Using CATALINA_BASE:   /usr/share/apache-tomcat-7.0.14
Using CATALINA_HOME:   /usr/share/apache-tomcat-7.0.14
Using CATALINA_TMPDIR: /usr/share/apache-tomcat-7.0.14/temp
Using JRE_HOME:        /usr/java/jdk1.6.0_25
Using CLASSPATH:       /usr/share/apache-tomcat-7.0.14/bin/bootstrap.jar:/usr/share/apache-tomcat-7.0.14/bin/tomcat-juli.jar
Restarting Tomcat (Must be started first):

root@slackd:~# /etc/rc.d/rc.tomcat restart
Using CATALINA_BASE:   /usr/share/apache-tomcat-7.0.14
Using CATALINA_HOME:   /usr/share/apache-tomcat-7.0.14
Using CATALINA_TMPDIR: /usr/share/apache-tomcat-7.0.14/temp
Using JRE_HOME:        /usr/java/jdk1.6.0_25
Using CLASSPATH:       /usr/share/apache-tomcat-7.0.14/bin/bootstrap.jar:/usr/share/apache-tomcat-7.0.14/bin/tomcat-juli.jar
Using CATALINA_BASE:   /usr/share/apache-tomcat-7.0.14
Using CATALINA_HOME:   /usr/share/apache-tomcat-7.0.14
Using CATALINA_TMPDIR: /usr/share/apache-tomcat-7.0.14/temp
Using JRE_HOME:        /usr/java/jdk1.6.0_25
Using CLASSPATH:       /usr/share/apache-tomcat-7.0.14/bin/bootstrap.jar:/usr/share/apache-tomcat-7.0.14/bin/tomcat-juli.jar
You should review the Catalina.out log located at /usr/share/apache-tomcat-7.0.14/logs/catalina.out and check for any errors.

You should now be able to access Tomcat at:

http://yourdomain.com:8080 or http://yourIPaddress:8080 and we should see the Tomcat home page.
FInally, to enable Tomcat to start at boot time, add the following lines to /etc/rc.local:
if [ -x /etc/rc.d/rc.tomcat ]; then
/etc/rc.d/rc.tomcat start
Related Tomcat Posts

Learn More About Apache Tomcat 7 Apache Tomcat Foundation Tomcat 7

Bookmark and Share



Sunday Mar 06, 2011

Install Apache Roller 4 with Tomcat on CentOS

This post will cover installing Apache Roller 4.0.1 on CentOS with Tomcat and MySQL.

4.0.1 is the current GA production release of Apache Roller.

For this post, you will need a working installation of Tomcat. If you do not have Tomcat installed, you can install it using our Tomcat step-by-step guide here.

What you will need to download:

apache-roller-4.0.1.zip JavaMail 1.4.4 mysql-connector-java-5.1.15-bin.jar I'll be saving the above file to my /opt directory.

1. Create the Required MySQL Database and User:


We'll call our database 'roller'

[root@srv6 opt]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2694
Server version: 5.0.77 Source distribution

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> create database roller;
Query OK, 1 row affected (0.00 sec)

mysql> grant all on roller.* to myuser@localhost identified by 'secret';
Query OK, 0 rows affected (0.00 sec)

mysql>


2. Copy The Required JAR Files to the Tomcat/lib Directory


From our downloads, we'll need to copy the mail.jar and mysql-connector-java-5.1.15-bin.jar to our Tomcat/lib Directory

Unzip javamail1_4_4.zip

[root@srv6 opt]# unzip -q javamail1_4_4.zip
Change to the javamail-1.4.4 directory and copy mail.jar to the Tomcat lib directory:
[root@srv6 opt]# cd javamail-1.4.4
[root@srv6 javamail-1.4.4]# cp mail.jar /usr/share/apache-tomcat-6.0.30/lib/mail.jar


Change back to the /opt directory and unpack mysql-connector-java-5.1.15.tar.gz

[root@srv6 javamail-1.4.4]# cd /opt
[root@srv6 opt]# tar -xvf mysql-connector-java-5.1.15.tar.gz


Change to the mysql-connector-java-5.1.15 directory and copy mysql-connector-java-5.1.15-bin.jar to the Tomcat lib directory:

[root@srv6 opt]# cd mysql-connector-java-5.1.15
[root@srv6 mysql-connector-java-5.1.15]# cp mysql-connector-java-5.1.15-bin.jar /usr/share/apache-tomcat-6.0.30/lib/mysql-connector-java-5.1.15-bin.jar


3. Create a roller-custom.properties File


We'll now create our roller-custom.properties file in the Tomcat/lib directory

[root@srv6 mysql-connector-java-5.1.15]#  cd /usr/share/apache-tomcat-6.0.30/lib
[root@srv6 lib]# vi roller-custom.properties


The file should contain the following. Replace database, user and password with your own. If required enter the mail user credentials as well.

installation.type=auto
database.configurationType=jdbc
database.jdbc.driverClass=com.mysql.jdbc.Driver
database.jdbc.connectionURL=jdbc:mysql://localhost:3306/roller
database.jdbc.username=myuser
database.jdbc.password=secret
mail.configurationType=properties
mail.hostName=localhost
#mail.username=
#mail.password=
4. Create roller.war


We now need to build the roller.war file from our Roller download.

Unzip apache-roller-4.0.1.zip

[root@srv6 opt]# unzip -q apache-roller-4.0.1.zip
Change to the apache-roller-4.0.1/webapp/roller directory
[root@srv6 opt]# cd apache-roller-4.0.1/webapp/roller
Create the WAR file
[root@srv6 roller]# % jar cvf ../roller.war *


5. Copy the roller.war to your Tomcat/webapps Directory


The roller.war file is created apache-roller-4.0.1/webapp directory. Copy the WAR to your Tomcat/webapps directory

[root@srv6 webapp]# cp roller.war /usr/share/apache-tomcat-6.0.30/webapps/roller.war


6. Start Tomcat


Start up Tomcat to load your new files and jars.

[root@srv6 webapp]# service tomcat start
Using CATALINA_BASE:   /usr/share/apache-tomcat-6.0.30
Using CATALINA_HOME:   /usr/share/apache-tomcat-6.0.30
Using CATALINA_TMPDIR: /usr/share/apache-tomcat-6.0.30/temp
Using JRE_HOME:        /usr/java/jdk1.6.0_23
Using CLASSPATH:       /usr/share/apache-tomcat-6.0.30/bin/bootstrap.jar


7. Create Roller Tables in MySQL via Roller GUI


If your installation was successful, you should now be able to go to http://YourIP:8080/roller or http://YourDomain:8080/roller

If you are not able to access Roller, check your catalina.out or roller.log files in your Tomcat/logs directory.

You should see a prompt to create the roller tables in MySQL.

Click the "Yes - Create Tables Now" button



On successful completion of creating the Roller tables in MySQL you will see the following:



Follow the prompt and click to complete the installation.

8. Create Global Admin User


The Roller Front Page should now be displayed as below.



Click the 'New User Registration Link' to create your Global Admin user. As noted, the first user registered will have Global Admin rights.



http://roller.apache.org/

Bookmark and Share



Friday Mar 04, 2011

Install Tomcat 6 on CentOS or RHEL

This post will cover installation and configuration of Tomcat 6 on CentOS 5.

We will also show how to run Tomcat as a service, create a start/stop script, and configure Tomcat to run under a non-root user.

This post has been updated for Tomcat 6.0.32.

This post below will work with any Tomcat 6.x version, but I have been keeping it updated to keep the links consistent and to make it as "copying-and-paste" as possible.

If you are looking for our tutorial on installing Tomcat 7 on CentOS/RHEL, you can find it here.

This installation of Tomcat 6.0.32 was done on CentOS 5.5, but any CentOS 5.x should work, as well as RHEL and Fedora.

If you do not already have the Java Development Kit (JDK) installed on your machine, you will need to download and install the required JDK for your platform.

If you do have the JDK installed, you can skip to: Step 2: Download and Install the Tomcat 6.0.32:

Step 1: Install the JDK


You can download the JDK here: http://www.oracle.com/technetwork/java/javase/downloads/index.html

I'm using the latest, which is JDK 6, update 24. The JDK is specific to 32 and 64 bit versions.

My CentOS box is 64 bit, so I'll need: jdk-6u24-linux-x64.bin.

If you are on 32 bit, you'll need: jdk-6u24-linux-i586.bin

Download the appropriate JDK and save it to a directory. I'm saving it to /root.

Move (mv) or copy (cp) the file to the /opt directory:

[root@blanche ~]# mv jdk-6u24-linux-x64.bin /opt/jdk-6u24-linux-x64.bin  


Create a new directory /usr/java.

[root@blanche ~]# mkdir /usr/java  


Change to the /usr/java directory we created and install the JDK using 'sh /opt/jdk-6u24-linux-x64.bin'

[root@blanche ~]# cd /usr/java
[root@blanche java]# sh /opt/jdk-6u24-linux-x64.bin


Set the JAVA_HOME path. This is where we installed our JDK above.

To set it for your current session, you can issue the following from the CLI:

[root@blanche java]# JAVA_HOME=/usr/java/jdk1.6.0_24
[root@blanche java]# export JAVA_HOME
[root@blanche java]# PATH=$JAVA_HOME/bin:$PATH
[root@blanche java]# export PATH


To set the JAVA_HOME for users, we add below to the user ~/.bashrc or ~/.bash_profile of the user. We can also add it /etc/profile and then source it to give to all users.

JAVA_HOME=/usr/java/jdk1.6.0_24
export JAVA_HOME
PATH=$JAVA_HOME/bin:$PATH
export PATH


Once you have added the above to ~/.bash_profile or ~/.bashrc, you should log out, then log back in and check that the JAVA_HOME is set correctly.

[root@blanche ~]#  echo $JAVA_HOME
/usr/java/jdk1.6.0_24


Step 2: Download and Install Tomcat 6.0.32:


Download apache-tomcat-6.0.32.tar.gz here

Save the file to a directory. I'm saving it to /root/apache-tomcat-6.0.32.tar.gz

Before proceeding, you should verify the MD5 Checksum for your Tomcat download (or any other download).

Since we saved the Tomcat download to /root/apache-tomcat-6.0.32.tar.gz, we'll go to the /root directory and use the md5sum command.

[root@blanche ~]# md5sum apache-tomcat-6.0.32.tar.gz
082a0707985b6c029920d4d6d5ec11cd


Compare the output above to the MD5 Checksum provided by the Apache Tomcat MD5 page and insure that they match exactly. (There is also a link to display the MD5 checksum located just to the right off the download link).

Now, move (mv) or copy (cp) the file to the /usr/share directory:

[root@blanche ~]# mv apache-tomcat-6.0.32.tar.gz /usr/share/apache-tomcat-6.0.32.tar.gz


Change to the /usr/share directory and unpack the file using tar -xzf:

[root@blanche ~]# cd /usr/share
[root@sv2 blanche ]# tar -xzf apache-tomcat-6.0.32.tar.gz  


This will create the directory /usr/share/apache-tomcat-6.0.32

At this point, you could start Tomcat via the Tomcat bin directory using the Tomcat startup.sh script located at /usr/share/apache-tomcat-6.0.32/bin.

[root@blanche share]# cd /usr/share/apache-tomcat-6.0.32/bin
[root@blanche bin]# ./startup.sh


Step 3: How to Run Tomcat as a Service.


We will now see how to run Tomcat as a service and create a simple Start/Stop/Restart script, as well as to start Tomcat at boot.

Change to the /etc/init.d directory and create a script called 'tomcat' as shown below.

[root@blanche share]# cd /etc/init.d
[root@blanche init.d]# vi tomcat


#!/bin/bash
# description: Tomcat Start Stop Restart
# processname: tomcat
# chkconfig: 234 20 80
JAVA_HOME=/usr/java/jdk1.6.0_24
export JAVA_HOME
PATH=$JAVA_HOME/bin:$PATH
export PATH
CATALINA_HOME=/usr/share/apache-tomcat-6.0.32

case $1 in
start)
sh $CATALINA_HOME/bin/startup.sh
;; 
stop)   
sh $CATALINA_HOME/bin/shutdown.sh
;; 
restart)
sh $CATALINA_HOME/bin/shutdown.sh
sh $CATALINA_HOME/bin/startup.sh
;; 
esac    
exit 0


The above script is simple and contains all of the basic elements you will need to get going.

As you can see, we are simply calling the startup.sh and shutdown.sh scripts located in the Tomcat bin directory (/usr/share/apache-tomcat-6.0.32/bin).

You can adjust your script according to your needs and, in subsequent posts, we'll look at additional examples.

CATALINA_HOME is the Tomcat home directory (/usr/share/apache-tomcat-6.0.32)

Now, set the permissions for your script to make it executable:

[root@blanche init.d]# chmod 755 tomcat


We now use the chkconfig utility to have Tomcat start at boot time. In my script above, I am using chkconfig: 244 20 80. 2445 are the run levels and 20 and 80 are the stop and start priorities respectively. You can adjust as needed.

[root@blanche init.d]# chkconfig --add tomcat
[root@blanche init.d]# chkconfig --level 234 tomcat on


Verify it:

[root@blanche init.d]# chkconfig --list tomcat
tomcat          0:off   1:off   2:on    3:on    4:on    5:off   6:off


Now, let's test our script.

Start Tomcat:

[root@blanche ~]# service tomcat start
Using CATALINA_BASE:   /usr/share/apache-tomcat-6.0.32
Using CATALINA_HOME:   /usr/share/apache-tomcat-6.0.32
Using CATALINA_TMPDIR: /usr/share/apache-tomcat-6.0.32/temp
Using JRE_HOME:        /usr/java/jdk1.6.0_24
Using CLASSPATH:       /usr/share/apache-tomcat-6.0.32/bin/bootstrap.jar


Stop Tomcat:

[root@blanche ~]# service tomcat stop
Using CATALINA_BASE:   /usr/share/apache-tomcat-6.0.32
Using CATALINA_HOME:   /usr/share/apache-tomcat-6.0.32
Using CATALINA_TMPDIR: /usr/share/apache-tomcat-6.0.32/temp
Using JRE_HOME:        /usr/java/jdk1.6.0_24
Using CLASSPATH:       /usr/share/apache-tomcat-6.0.32/bin/bootstrap.jar
Restarting Tomcat (Must be started first):

[root@blanche ~]# service tomcat restart
Using CATALINA_BASE:   /usr/share/apache-tomcat-6.0.32
Using CATALINA_HOME:   /usr/share/apache-tomcat-6.0.32
Using CATALINA_TMPDIR: /usr/share/apache-tomcat-6.0.32/temp
Using JRE_HOME:        /usr/java/jdk1.6.0_24
Using CLASSPATH:       /usr/share/apache-tomcat-6.0.32/bin/bootstrap.jar
Using CATALINA_BASE:   /usr/share/apache-tomcat-6.0.32
Using CATALINA_HOME:   /usr/share/apache-tomcat-6.0.32
Using CATALINA_TMPDIR: /usr/share/apache-tomcat-6.0.32/temp
Using JRE_HOME:        /usr/java/jdk1.6.0_24
Using CLASSPATH:       /usr/share/apache-tomcat-6.0.32/bin/bootstrap.jar


We should review the Catalina.out log located at /usr/share/apache-tomcat-6.0.32/logs/catalina.out and check for any errors.

[root@blanche init.d]# less /usr/share/apache-tomcat-6.0.32/logs/catalina.out


We can now access the Tomcat Manager page at:

http://yourdomain.com:8080 or http://yourIPaddress:8080 and we should see the Tomcat home page.

Step 5 (Optional): How to Run Tomcat using Minimally Privileged (non-root) User.


In our Tomcat configuration above, we are running Tomcat as Root.

For security reasons, it is always best to run services with the only those privileges that are necessary.

There are some who make a strong case that this is not required, but it's always best to err on the side of caution.

To run Tomcat as non-root user, we need to do the following:

1. Create the group 'tomcat':

[root@blanche ~]# groupadd tomcat
[root@blanche ~]# useradd -s /bin/bash -g tomcat tomcat


2. Create the user 'tomcat' and add this user to the tomcat group we created above.

[root@blanche ~]# groupadd tomcat
[root@blanche ~]# useradd -s /bin/bash -g tomcat tomcat


The above will create a home directory for the user tomcat in the default user home as /home/tomcat

If we want the home directory to be elsewhere, we simply specify so using the -d switch.

[root@blanche ~]# useradd -g tomcat -d /usr/share/apache-tomcat-6.0.32/tomcat tomcat


The above will create the user tomcat's home directory as /usr/share/apache-tomcat-6.0.32/tomcat

3. Change ownership of the tomcat files to the user we created above:

[root@blanche ~]# chown -Rf tomcat.tomcat /usr/share/apache-tomcat-6.0.32/


Note: it is possible to enhance our security still further by making certain files and directory read-only. This will not be covered in this post and care should be used when setting such permissions.

4. Adjust the start/stop service script we created above. In our new script, we need to su to the user tomcat:

#!/bin/bash
# description: Tomcat Start Stop Restart
# processname: tomcat
# chkconfig: 234 20 80
JAVA_HOME=/usr/java/jdk1.6.0_24
export JAVA_HOME
PATH=$JAVA_HOME/bin:$PATH
export PATH
TOMCAT_HOME=/usr/share/apache-tomcat-6.0.32/bin

case $1 in
start)
/bin/su tomcat $TOMCAT_HOME/startup.sh
;; 
stop)   
/bin/su tomcat $TOMCAT_HOME/shutdown.sh
;; 
restart)
/bin/su tomcat $TOMCAT_HOME/shutdown.sh
/bin/su tomcat $TOMCAT_HOME/startup.sh
;; 
esac    
exit 0


Step 6 (Optional): How to Run Tomcat on Port 80 as Non-Root User.


Note: the following applies when you are running Tomcat in "stand alone" mode. That is, you are running Tomcat without Apache in front of it.

To run services below port 1024 as a user other than root, you can add the following to your IP tables:

[root@blanche ~]# iptables -t nat -A PREROUTING -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 8080  
[root@blanche ~]# iptables -t nat -A PREROUTING -p udp -m udp --dport 80 -j REDIRECT --to-ports 8080  


Learn More About Apache Tomcat

Apache Tomcat Foundation

Tomcat 6



Tomcat 6 Hosting

Bookmark and Share




Main Menu

Built With

Search

Pages

LinkedIn

Tag Cloud

Hosted by:

Navigation

Visitors

Sponsors

petiole Cloud

Feeds