jk 负载均衡+集群+session 复制

8080     8980

8005     8905

8009     8909

4000     4001

1.安装httpd

tar zxvf httpd-2.2.17.tar.gz
cd httpd-2.2.17
./configure --prefix=/usr/local/apache2 --enable-so
make && make install

2.安装JDK

chmod +x jdk-6u18-linux-i586.bin
./jdk-6u18-linux-i586.bin
mv jdk1.6.0_18 /usr/local/jdk
rm -rf /usr/bin/java
rm -rf /usr/bin/javac
ln -s /usr/local/jdk/bin/java /usr/bin/java
ln -s /usr/local/jdk/bin/javac /usr/bin/javac

[root@CentOSlamp src]# java -version
java version "1.6.0_18"
Java(TM) SE Runtime Environment (build 1.6.0_18-b07)
Java HotSpot(TM) Client VM (build 16.0-b13, mixed mode, sharing)

ln -s /usr/local/jdk/jre /usr/local/jre

设置环境变量

vi /etc/profile 添加如下内容

JAVA_HOME=/usr/local/jdk
export JAVA_HOME
JRE_HOME=/usr/local/jre
export JRE_HOME

运行,使环境变量生效

source /etc/profile

3.安装tomcat

tar zxvf apache-tomcat-7.0.6.tar.gz
mv apache-tomcat-7.0.6 /usr/local/tomcat1

tar zxvf apache-tomcat-7.0.6.tar.gz
mv apache-tomcat-7.0.6 /usr/local/tomcat2

4.安装tomcat-connectors

tar zxvf tomcat-connectors-1.2.31-src.tar.gz

cd tomcat-connectors-1.2.31-src/native/

./configure --with-apxs=/usr/local/apache2/bin/apxs --with-java-home=/usr/local/jdk
make && make install

5. 配置httpd.conf 文件

vi /usr/local/apache2/conf/httpd.conf

添加

LoadModule jk_module modules/mod_jk.so

<IfModule jk_module>
JkWorkersFile conf/workers.properties
JkMountFile conf/uriworkermap.properties
JkLogFile logs/mod_jk.log
JkLogLevel warn
</IfModule>

6.创建并配置workers.properties文件

vi /usr/local/apache2/conf/workers.properties

worker.list=wlb , jkstatus

worker.worker1.port=8009
worker.worker1.host=localhost
worker.worker1.type=ajp13
worker.worker1.lbfactor=1
# Define preferred failover node for worker1
#worker.worker1.redirect=worker2

worker.worker2.port=8909
worker.worker2.host=localhost
worker.worker2.type=ajp13
worker.worker2.lbfactor=1
# Disable worker2 for all requests except failover
#worker.worker2.activation=disabled

worker.wlb.type=lb
worker.wlb.balance_workers=worker1,worker2

worker.jkstatus.type=status

以上注释掉的两行如果开启,则worker2成为worker1的备用,在worker1不可用的情况下才会向worker2请求

linux

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