Tomcat cluster in CentOS 6.6

Tomcat cluster in CentOS 6.6

Tomcat cluster installation environment: CentOS 6.6 (64-bit System)

 
Install Tomcat site
Install and configure JDK
Uninstall the built-in JDK version before installation
-- View and uninstall the version with JDK installed
[Xju @ xjuCentOS desktop] $ su root
Password:
[Root @ xjuCentOS desktop] # rpm-qa | grep jdk
Java-1.7.0-openjdk-1.7.0.9-2.3.4.1.el6_3.i686
Java-1.6.0-openjdk-1.6.0.0-1.50.1.11.5.el6_3.i686
[Root @ xjuCentOS desktop] # rpm-e-nodeps java-1.6.0-openjdk-1.6.0.0-1.50.1.11.5.el6_3.i686
[Root @ xjuCentOS desktop] # rpm-e-nodeps java-1.7.0-openjdk-1.7.0.9-2.3.4.1.el6_3.i686
Install JDK
# Chmod 777 jdk-7u79-linux-i586.rpm
# Rpm-ivh jdk-7u79-linux-i586.rpm
Configure Environment Variables
-- Configure java environment variables
-- Modify the/etc/profile file and global variables, which may cause security problems to the system. bash_profile file. This method is more secure. It can control the permissions to use these environment variables to the user level. If you need to grant a user permission to use these environment variables, you only need to modify. you can use the bash_profile file.
-- Backup the configuration file
# Cp/etc/profile. bak
-- Edit the configuration file (Add the following content at the end)
# Vi/etc/profile

# Set Java Environment
Export JAVA_HOME =/usr/java/jdk1.7.0 _ 79
Export PATH = $ PATH: $ JAVA_HOME/bin

-- Reload the configuration file
# Source/etc/profile

Or:
# Vi/etc/profile. d/java. sh
Export JAVA_HOME =/usr/java/jdk1.7.0 _ 79
Export PATH = $ PATH: $ JAVA_HOME/bin

-- View the installed jdk version
# Java-version
# Javac-version

Test jdk
-- Create a Test. java file in the text editor, enter the following code and save the file:
Public class Test {
Public static void main (String args []) {
System. out. println ("Hello, Java! ");
}
}
-- Compile
# Javac Test. java
-- Run
# Java Test

Install and configure Tomcat
Install two Tomcat servers
# Tar-zxvf apache-tomcat-7.0.62.tar.gz
# Cp-rf apache-tomcat-7.0.62/usr/local/tomcat1
# Mv apache-tomcat-7.0.62/usr/local/tomcat2
# Chown-R xju: xju/usr/local/tomcat1
# Chown-R xju: xju/usr/local/tomcat2

Modify the port numbers of two tomcat servers
(1) modify the tomcat1 port number
$ Cd/usr/local/tomcat1/conf/
$ Cp server. xml server. xml. bak
$ Cp web. xml web. xml. bak
$ Vi server. xml
<Server port = "8005" shutdown = "SHUTDOWN">
<Connector port = "8080" protocol = "HTTP/1.1"
ConnectionTimeout = "20000"
RedirectPort = "8443"
URIEncoding = "UTF-8"/>
<Connector port = "8009" protocol = "AJP/1.3" redirectPort = "8443"/>
<Engine name = "Catalina" defaultHost = "localhost" jvmRoute = "tomcat1">

(2) modify the tomcat2 port number
$ Cd/usr/local/tomcat2/conf/
$ Cp server. xml server. xml. bak
$ Cp web. xml web. xml. bak
$ Vi server. xml
<Server port = "8006" shutdown = "SHUTDOWN">
<Connector port = "8081" protocol = "HTTP/1.1"
ConnectionTimeout = "20000"
RedirectPort = "8443"
URIEncoding = "UTF-8"/>
<Connector port = "8010" protocol = "AJP/1.3" redirectPort = "8443"/>
<Engine name = "Catalina" defaultHost = "localhost" jvmRoute = "tomcat2">

Tomcat default port remarks:
8005: indicates the port used to stop Tomcat
8080: indicates the HTTP connection Port
8009: indicates the listening port of Apache.
8443: indicates the SSL connection port.

Start Tomcat
-- Start tomcat1
# Cd/usr/local/tomcat1/bin
#./Startup. sh -- start
#./Shutdown. sh -- close
Using CATALINA_BASE:/usr/local/tomcat1
Using CATALINA_HOME:/usr/local/tomcat1
Using CATALINA_TMPDIR:/usr/local/tomcat1/temp
Using JRE_HOME:/usr/java/jdk1.7.0 _ 79/jre/
Using CLASSPATH:/usr/local/export AT1/bin/bootstrap. jar:/usr/local/export AT1/bin/tomcat-juli.jar
Tomcat started.

Add Tomcat boot auto start
(1) set tomcat1 to start automatically
Copy the/usr/local/tomcat1/bin/catalina. sh file to the/etc/init. d directory and change it to tomcat1.
# Cp/usr/local/tomcat1/bin/catalina. sh/etc/init. d/tomcat1
Modify the/etc/init. d/tomcat1 file and add the red part to the file:
# Vi/etc/init. d/tomcat1
Enter the following content in the first line (otherwise, an error occurs: tomcat does not support chkconfig ):
#! /Bin/sh
# Chkconfig: 2345 10 90
# Description: extends AT1 service

# Licensed to the Apache Software Foundation (ASF) under one or more
# Contributor license agreements. See the NOTICE file distributed
........................................ .............................
# $ Id: catalina. sh 1498485 2013-07-01 14: 37: 43Z markt $
#-----------------------------------------------------------------------------

CATALINA_HOME =/usr/local/tomcat1
JAVA_HOME =/usr/java/jdk1.7.0 _ 79

# OS specific support. $ var _ must _ be set to either true or false.

-- Add tomcat service:
# Chkconfig -- add partition at1
-- Set tomcat to auto-start upon startup:
# Chkconfig extends AT1 on

-- Disable and start the tomcat service. The generated tomcat does not have the restart command:
# Service implements AT1 stop
# Service extends AT1 start
(2) Set tomcat1 to start automatically
Copy the/usr/local/tomcat2/bin/catalina. sh file to the/etc/init. d directory and change it to tomcat2.
# Cp/usr/local/tomcat2/bin/catalina. sh/etc/init. d/tomcat2
Modify the/etc/init. d/tomcat2 file and add the red part to the file:
# Vi/etc/init. d/tomcat2
Enter the following content in the first line (otherwise, an error occurs: tomcat does not support chkconfig ):
#! /Bin/sh
# Chkconfig: 2345 10 90
# Description: Tomcat2 service

# Licensed to the Apache Software Foundation (ASF) under one or more
# Contributor license agreements. See the NOTICE file distributed
........................................ .............................
# $ Id: catalina. sh 1498485 2013-07-01 14: 37: 43Z markt $
#-----------------------------------------------------------------------------

CATALINA_HOME =/usr/local/tomcat2
JAVA_HOME =/usr/java/jdk1.7.0 _ 79

# OS specific support. $ var _ must _ be set to either true or false.

-- Add tomcat service:
# Chkconfig -- add tomcat2
-- Set tomcat to auto-start upon startup:
# Chkconfig tomcat2 on

-- Disable and start the tomcat service. The generated tomcat does not have the restart command:
# Service tomcat2 stop
# Service tomcat2 start

Test Tomcat
# Cd/usr/local/tomcat/

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