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Tuổi 19-10-2012, 02:17 PM   #1
hoctinhoc
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Hướng dẫn cài đặt Java - Tomcat 7 on CentOS 5.x. or CentOS 6.x
Hướng dẫn cài đặt Java - Tomcat 7 on CentOS 5.x. or CentOS 6.x


Bước 1: Install JDK 1.7



You can download the latest JDK here: http://www.oracle.com/technetwork/ja...ads/index.html

We'll install the latest JDK, which is JDK 7, Update 5. The JDK is specific to 32 and 64 bit versions.

My CentOS box is 64 bit, so I'll need: jdk-7u5-linux-x64.tar.gz.

If you are on 32 bit, you'll need: jdk-7u5-linux-i586.tar.gz

Start by creating a new directory /usr/java:


Mã:
  1. [root@srv6 ~]# mkdir /usr/java

Change to the /usr/java directory we created


Mã:
  1. [root@srv6 ~]# cd /usr/java
  2. [root@srv6 java ]#

Download the appropriate JDK and save it to /usr/java directory we created above.

Unpack jdk-7u5-linux-x64.tar.gz in the /usr/java directory using tar -xzf:


Mã:
  1. [root@srv6 java]# tar -xzf jdk-7u5-linux-x64.tar.gz

This will create the directory /usr/java/jdk1.7.0_05. This will be our JAVA_HOME.


We can now set JAVA_HOME and put Java into the path of our users.

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



Mã:
  1. [root@srv6 java]# JAVA_HOME=/usr/java/jdk1.7.0_05
  2. [root@srv6 java]# export JAVA_HOME
  3. [root@srv6 java]# PATH=$JAVA_HOME/bin:$PATH
  4. [root@srv6 java]# export PATH
To set the JAVA_HOME permanently, however, we need to add below to the ~/.bash_profile of the user (in this case, root).
We can also add it /etc/profile and then source it to give to all users.



Mã:
  1. JAVA_HOME=/usr/java/jdk1.7.0_05
  2. export JAVA_HOME
  3. PATH=$JAVA_HOME/bin:$PATH
  4. export PATH
Once you have added the above to ~/.bash_profile, you should log out, then log back in and check that the JAVA_HOME is set correctly.



Mã:
  1. [root@srv6 ~]# echo $JAVA_HOME
  2. /usr/java/jdk1.7.0_05

Note: If you decided to use JDK 6 rather than 7 as we did above, simply save the JDK 6 bin file to /opt (or another location), then navigate to /usr/java and issue: 'sh /opt/jdk-6u33-linux-x64.bin'. This will create a JAVA Home of /usr/java/jdk1.6.0.33


Bước 2: Download and Unpack Tomcat 7.0.29 (or latest)


We will install Tomcat 7 under /usr/share.

Switch to the /usr/share directory:

Mã:
  1. [root@srv6 ~]# cd /usr/share
  2. [root@srv6 share ]#
Download apache-tomcat-7.0.29.tar.gz (or the latest version) here

and save it to /usr/share

Once downloaded, you should verify the MD5 Checksum for your Tomcat download using the md5sum command.

Mã:
  1. [root@srv6 share ]# md5sum apache-tomcat-7.0.29.tar.gz
  2. 307076fa3827e19fa9b03f3ef7cf1f3f *apache-tomcat-7.0.29.tar.gz
Compare the output above to the MD5 Checksum provided next to the download link and you used above and check that it matches.

unpack the file using tar -xzf:

/CODE]
  1. [root@srv6 share ]# tar -xzf apache-tomcat-7.0.29.tar.gz
[/CODE]

This will create the directory /usr/share/apache-tomcat-7.0.29


Bước 3: Configure Tomcat to Run 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.



Mã:
  1. [root@srv6 share]# cd /etc/init.d
  2. [root@srv6 init.d]# vi tomcat
And here is the script we will use.



Mã:
  1. #!/bin/bash
  2. # description: Tomcat Start Stop Restart
  3. # processname: tomcat
  4. # chkconfig: 234 20 80
  5. JAVA_HOME=/usr/java/jdk1.7.0_05
  6. export JAVA_HOME
  7. PATH=$JAVA_HOME/bin:$PATH
  8. export PATH
  9. CATALINA_HOME=/usr/share/apache-tomcat-7.0.29
  10. case $1 in
  11. start)
  12. sh $CATALINA_HOME/bin/startup.sh
  13. ;;
  14. stop)
  15. sh $CATALINA_HOME/bin/shutdown.sh
  16. ;;
  17. restart)
  18. sh $CATALINA_HOME/bin/shutdown.sh
  19. sh $CATALINA_HOME/bin/startup.sh
  20. ;;
  21. esac
  22. 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-7.0.29/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-7.0.29)

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


Mã:
  1. [root@srv6 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: 234 20 80. 2345 are the run levels and 20 and 80 are the stop and start priorities respectively. You can adjust as needed.


Mã:
  1. [root@srv6 init.d]# chkconfig --add tomcat
  2. [root@srv6 init.d]# chkconfig --level 234 tomcat on
Verify it:


Mã:
  1. [root@srv6 init.d]# chkconfig --list tomcat
  2. tomcat 0:off 1:off 2:on 3:on 4:on 5:off 6:off
Now, let's test our script.

Start Tomcat:


Mã:
  1. [root@srv6 ~]# service tomcat start
  2. Using CATALINA_BASE: /usr/share/apache-tomcat-7.0.29
  3. Using CATALINA_HOME: /usr/share/apache-tomcat-7.0.29
  4. Using CATALINA_TMPDIR: /usr/share/apache-tomcat-7.0.29/temp
  5. Using JRE_HOME: /usr/java/jdk1.7.0_05
  6. Using CLASSPATH: /usr/share/apache-tomcat-7.0.29/bin/bootstrap.jar:/usr/share/apache-tomcat-7.0.29/bin/tomcat-juli.jar
Stop Tomcat:



Mã:
  1. [root@srv6 ~]# service tomcat stop
  2. Using CATALINA_BASE: /usr/share/apache-tomcat-7.0.29
  3. Using CATALINA_HOME: /usr/share/apache-tomcat-7.0.29
  4. Using CATALINA_TMPDIR: /usr/share/apache-tomcat-7.0.29/temp
  5. Using JRE_HOME: /usr/java/jdk1.7.0_05
  6. Using CLASSPATH: /usr/share/apache-tomcat-7.0.29/bin/bootstrap.jar:/usr/share/apache-tomcat-7.0.29/bin/tomcat-juli.jar
Restarting Tomcat (Must be started first):



Mã:
  1. [root@srv6 ~]# service tomcat restart
  2. Using CATALINA_BASE: /usr/share/apache-tomcat-7.0.29
  3. Using CATALINA_HOME: /usr/share/apache-tomcat-7.0.29
  4. Using CATALINA_TMPDIR: /usr/share/apache-tomcat-7.0.29/temp
  5. Using JRE_HOME: /usr/java/jdk1.7.0_05
  6. Using CLASSPATH: /usr/share/apache-tomcat-7.0.29/bin/bootstrap.jar:/usr/share/apache-tomcat-7.0.29/bin/tomcat-juli.jar
  7. Using CATALINA_BASE: /usr/share/apache-tomcat-7.0.29
  8. Using CATALINA_HOME: /usr/share/apache-tomcat-7.0.29
  9. Using CATALINA_TMPDIR: /usr/share/apache-tomcat-7.0.29/temp
  10. Using JRE_HOME: /usr/java/jdk1.7.0_05
  11. Using CLASSPATH: /usr/share/apache-tomcat-7.0.29/bin/bootstrap.jar:/usr/share/apache-tomcat-7.0.29/bin/tomcat-juli.jar
We should review the Catalina.out log located at /usr/share/apache-tomcat-7.0.29/logs/catalina.out and check for any errors.

Mã:
  1. [root@srv6 init.d]# more /usr/share/apache-tomcat-7.0.29/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.



Tham khảo: http://www.davidghedini.com/pg/entry/install_tomcat_7_on_centos

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