Running The Apache Tomcat 7.0 Servlet/JSP Container
Requirements:
(1) Download and Install a Java SE Runtime Environment (JRE)
(1.1) Download a Java SE Runtime Environment (JRE),release version 6 or later, from
http://www.oracle.com/technetwork/java/javase/downloads/index.html
(1.2) Install the JRE according to the instructions included with the release.
You may also use a full Java Development Kit (JDK) rather than just a JRE.
(2) Download and Install Apache Tomcat
(2.1) Download a binary distribution of Tomcat from: http://tomcat.apache.org/
Apache Tomcat Versions
Apache Tomcat is an open source software implementation of the Java Servlet and JavaServer Pages technologies. Different versions of Apache Tomcat are available for different versions of the Servlet and JSP specifications. The mapping between the specifications and the respective Apache Tomcat versions is:
—————————————————————————————————–
Servlet| Tomcat version | Actual release revision|Minimum Java Version
—————————————————————————————————–
3.0/2.2 7.0.x 7.0.35 1.6
2.5/2.1 6.0.x 6.0.36 1.5
2.4/2.0 5.5.x (archived) 5.5.36 (archived) 1.4
2.3/1.2 4.1.x (archived) 4.1.40 (archived) 1.3
2.2/1.1 3.3.x (archived) 3.3.2 (archived) 1.1
—————————————————————————————————–
More details about each release can be found in the associated release notes.
Apache Tomcat 7.x
Apache Tomcat 7.x is the current focus of development. It builds upon the improvements made in Tomcat 6.0.x and implements the Servlet 3.0, JSP 2.2 and EL 2.2 specifications. In addition to that, it includes the following
improvements:
. Web application memory leak detection and prevention.
. Improved security for the Manager and Host Manager applications.
. Generic CSRF protection.
. Support for including external content directly in a web application.
. Refactoring (connectors, lifecycle) and lots of internal code clean-up.
How to verify Apache web server status - Parallels Plesk Panel for Linux/Unix.
The name of Apache 2 binary on Debian and SuSE OSes is “apache2,” not “httpd” as it is on Red Hat-based Linux distributions or FreeBSD.
# ps ax | grep httpd | grep -v grep
If not, try to start Apache from Plesk CP or via command line. If you get an error, check /var/log/httpd/error_log (/var/log/apache2/error_log on SuSE and Debian, /usr/local/psa/apache/logs/error_log on FreeBSD)
Make sure that Apache is listening on the both HTTP and HTTPS ports (80/443) on all needed IP addresses:
# netstat -l | grep http
tcp 0 0 *:http *:* LISTEN
tcp 0 0 *:https *:* LISTEN
How to enable Apache graceful restart in Plesk
APPLIES TO:
Parallels Plesk Panel 11.0 for Linux
Parallels Plesk Panel 10.4 for Linux/Unix
Parallels Plesk Panel 10.3 for Linux/Unix
By default, Parallels Plesk Panel does not use Apache graceful restart for applying new settings.
Solution:
To enable graceful restart, you should add the parameter “restart_apache_gracefully” with a “true” value to the “misc” table of the “psa” database. It can be done by the following SQL query:
mysql> INSERT INTO misc VALUES (’restart_apache_gracefully’, ‘true’);
How to enable Apache graceful restart in Plesk
APPLIES TO:
Parallels Plesk Panel 11.0 for Linux
Parallels Plesk Panel 10.4 for Linux/Unix
Parallels Plesk Panel 10.3 for Linux/Unix
Symptoms
By default, Parallels Plesk Panel does not use Apache graceful restart for applying new settings.
Resolution
To enable graceful restart, you should add the parameter “restart_apache_gracefully” with a “true” value to the “misc” table of the “psa” database. It can be done by the following SQL query:
mysql> INSERT INTO misc VALUES (’restart_apache_gracefully’, ‘true’);
