Tomcat cluster in CentOS 6.6

Tomcat cluster in CentOS 6.6

Installation environment: CentOS 6.6 (64-bit System)

1. Install Tomcat site

1. Install and configure JDK
   1. 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

1. Install JDK

# Chmod 777 jdk-7u79-linux-i586.rpm

# Rpm-ivh jdk-7u79-linux-i586.rpm

1. 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

1. 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

1. Install and configure Tomcat
   1. 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

1. 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.

1. 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.

1. 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

1. Test Tomcat

# Cd/usr/local/tomcat/