apache+tomcat的架构-白红宇

apache+tomcat的架构

阅读量：6488 次

发布时间：2019-06-24

本文共 22814 字，大约阅读时间需要 76 分钟。

apache+tomcat的架构

===================================

keepalived实现apache的高可用

在tomcat上搭建JspRun论坛

apache三种方式实现tomcat的反向代理

apache三种方式实现tomcat的负载均衡

===================================

环境：

OS：Centos 6.x(redhat 6.x)

yum源:

[centos]name=sohu-centosbaseurl=http://mirrors.sohu.com/centos/$releasever/os/$basearchgpgcheck=1enable=0gpgkey=http://mirrors.sohu.com/centos/RPM-GPG-KEY-CentOS-6[epel]name=sohu-epelbaseurl=http://mirrors.sohu.com/fedora-epel/$releasever/$basearch/enable=1gpgcheck=0

拓扑图：

拓扑图的规划：

	IP 地址	所需安装软件
apache1	Eth0:172.16.22.1 VIP1：172.16.22.100	Keepalived+apache+tomcat-connectors
apache2	Eth0:172.16.22.2 VIP1：172.16.22.100	Keepalived+apache+tomcat-connectors
tomcat1	Eth0:172.16.22.3	Jdk+tomcat+mysql-connector-java
tomcat2	Eth0:172.16.22.4	Jdk+tomcat+mysql-connector-java
mysql1	Eth0:172.16.22.5 VIP2：172.16.22.200	Corosync+pacemaker+Mysql+drbd
mysql2	Eth0:172.16.22.6 VIP2：172.16.22.200	Corosync+pacemaker+Mysql+drbd

部分软件下载

需解决的问题：

防止apache单点故障?

keepalived+apache实现apache的高可用

防止mysql单点故障?

corosync+pacemaker+mysql+drbd实现mysql的高可用

apache做tomcat反向代理的三种方式？

用三种模块mod_proxy、mod_proxy_ajp、mod_jk，需要用哪种就开启哪种的模块即可

apache做tomcat负载均衡的三种方式？

用三种模块mod_proxy、mod_proxy_ajp、mod_jk，需要用哪种就开启哪种的模块且还要开启负载均衡的模块，以及负载均衡算法的模块

apache怎么连接tomcat?

mod_proxy模块

mod_proxy_ajp模块

前面两种模块直接在配置文件里面加载即可，就可以连接tomcat

mod_jk模块用这个模块还要安装apache连接tomcat的连接器，tomcat-connectors这个软件包

tomcat怎么连接mysql?

每个连接mysql的软件包都要安装相应的连接mysql的驱动，tomcat连接mysql的驱动的软件包是mysql-connector-java

怎么实现session的会话保持？

实现session会话保持的方法有很多，tomcat自身也可以保持session，这种保持会话就是运维人员的工作了，运维人员直接在tomcat的配置文件中实现，用memcached或者redis保持session，memcached保持session有一定的缺陷，即memcached服务挂了，会话还是丢失了，但是memcached直接把session保存在内存中，所以速度可想而知，redis可以永久的保存session，这种保存session需要开发人员在开发中程序中自己定义，还有可以把session保存在数据库中，这种也是需要用程序定义，session如何保存，不同公司有不同的方法，保存在哪里还是需要运维人员和开发人员共同探讨合作。

一、每个服务器相关软件的安装

apache1上相关软件的安装：

#================yum安装keepalived======================================[root@jie1 ~]# yum -y install keepalived#================源码编译安装httpd-2.4.6================================[root@jie1 ~]# tar xf apr-1.4.6.tar.bz2[root@jie1 ~]# tar xf apr-util-1.5.2.tar.bz2[root@jie1 ~]# tar xf httpd-2.4.6.tar.bz2#===========安装开发库，和依赖性包======================================[root@jie1 ~]# yum -y groupinstall "Development tools" "Server Platform Development"[root@jie1 ~]# yum -y install pcre-devel#=============编译安装apr软件===========================================[root@jie1 ~]# cd apr-1.4.6[root@jie1 apr-1.4.6]# ./configure --prefix=/usr/local/apr && make && make install#================编译安装apr-util软件包=================================[root@jie1 ~]# cd apr-util-1.5.2[root@jie1 apr-util-1.5.2]# ./configure --prefix=/usr/local/apr-util --with-apr=/usr/local/apr && make && make install#=================编译安装httpd的软件包================================[root@jie1 ~]# cd httpd-2.4.6[root@jie1 httpd-2.4.6]# ./configure --prefix=/usr/local/apache  --enable-so --enable-ssl --enable-cgi --enable-rewrite --with-zlib --with-pcre --with-apr=/usr/local/apr --with-apr-util=/usr/local/apr-util --enable-modules=most --enable-mpms-shared=all --with-mpm=event  && make && make install#============复制源码包里面提供的httpd的SystemV脚本=====================[root@jie1 ~]# cp httpd-2.4.6/build/rpm/httpd.init  /etc/rc.d/init.d/httpd [root@jie1 ~]# vim /etc/rc.d/init.d/httpd#==============vim /etc/rc.d/init.d/httpd =============================prog=httpdhttpd=${HTTPD-/usr/local/apache/bin/httpd}pidfile=${PIDFILE-/usr/local/apache/logs/${prog}.pid}lockfile=${LOCKFILE-/var/lock/subsys/${prog}}RETVAL=0# check for 1.3 configurationcheck13 () {        CONFFILE=/usr/local/apache/conf/httpd.conf#======================================================================[root@jie1 ~]# service httpd startStarting httpd:                                            [  OK  ][root@jie1 ~]# chkconfig --add httpd[root@jie1 ~]# chkconfig httpd on#==============编译安装使用mod_jk模块连接tomcat的连接器=================[root@jie1 ~]# tar xf tomcat-connectors-1.2.37-src.tar.gz[root@jie1 ~]# cd tomcat-connectors-1.2.37-src/native/ [root@jie1 native]# ./configure --with-apxs=/usr/local/apache/bin/apxs && make && make install

apache2：与apache1要安装相关的软件、安装方法都是一样的，这里不再赘述

tomcat1上相关软件的安装：

[root@jie3 ~]# lsanaconda-ks.cfg              jdk-7u9-linux-x64.rpmapache-tomcat-7.0.42.tar.gz  JspRun!_6.0.0_GBK.zipinstall.log                  mysql-connector-java-5.1.16.tar.gzinstall.log.syslog      #===================安装jdk，修改环境变量=========================[root@jie3 ~]# rpm -ivh jdk-7u9-linux-x64.rpm[root@jie3 ~]# vim/etc/profile.d/java.shexport JAVA_HOME=/usr/java/latestexport PATH=$JAVA_HOME/bin:$PATH[root@jie3 ~]# source /etc/profile.d/java.sh#===================安装tomcat，修改环境变量=====================[root@jie3 ~]# tar xf apache-tomcat-7.0.42.tar.gz -C /usr/local/[root@jie3 ~]# cd /usr/local/[root@jie3 local]#ln -sv apache-tomcat-7.0.42   tomcat[root@jie3 local]# vim /etc/profile.d/tomcat.shexport CATALINA_HOME=/usr/local/tomcatexport PATH=$CATALINA_HOME/bin:$PATH[root@jie3 local]# source /etc/profile.d/tomcat.sh#==================安装连接mysql的驱动===========================[root@jie3 local]# cd /root/[root@jie3 ~]# tar xf mysql-connector-java-5.1.16.tar.gz[root@jie3 ~]# cd mysql-connector-java-5.1.16[root@jie3 mysql-connector-java-5.1.16]# cp mysql-connector-java-5.1.16-bin.jar /usr/local/tomcat/lib/

tomcat2：与tomcat1安装相关的软件、安装方法都是一样的，这里也不再赘述

mysql1与mysql2就是用corosync+pacemaker+mysql+drbd实现mysql的高可用，这里不做详细的安装

二、keepalived实现apache的高可用

apache1的配置：

#=====================修改keepalived的配置实现httpd的高可用===========[root@jie1 ~]# cd /etc/keepalived/[root@jie1 keepalived]# vim keepalived.conf! Configuration File for keepalivedglobal_defs {   notification_email {     sysadmin@firewall.loc   }   notification_email_from Alexandre.Cassen@firewall.loc   smtp_server 127.0.0.1   smtp_connect_timeout 30   router_id LVS_DEVEL}vrrp_script chk_httpd {     script "killall -0 httpd"     interval 0     weghit -2}vrrp_instance VI_1 {    state MASTER    interface eth0    virtual_router_id 22    priority 100    advert_int 1    authentication {        auth_type PASS        auth_pass 1111    }    virtual_ipaddress {        172.16.22.100    }    track_script {       chk_httpd}}#====================copy配置文件到apache2上面========================[root@jie1 keepalived]#scp keepalived.conf 172.16.22.2:/etc/keepalived[root@jie1 keepalived]# service keepalived startStarting keepalived:                                       [  OK  ][root@jie1 keepalived]# chkconfig --add keepalived[root@jie1 keepalived]# chkconfig keepalived on

apache2的相关配置：

#=====================修改来着apache1的keepalived的配置文件===========[root@jie2 ~]# cd /etc/keepalived/[root@jie2 keepalived]# vim keepalived.conf    state BACKUP    priority 99[root@jie2 keepalived]# service keepalived startStarting keepalived:                                       [  OK  ][root@jie2 keepalived]# chkconfig --add keepalived[root@jie2 keepalived]# chkconfig keepalived on

测试apache的高可用：

#=============查看vip在apache1节点上=================================[root@jie1 conf]# ip addr show | grep eth02: eth0: 
     
       mtu 1500 qdisc pfifo_fast state UP qlen 1000    inet 172.16.22.1/16 brd 172.16.255.255 scope global eth0    inet 172.16.22.100/32 scope global eth0  #===vip为172.16.22.100==#===========杀死httpd的服务进程，发现vip已经漂移=================[root@jie1 conf]# killall httpd[root@jie1 conf]# ip addr show | grep eth02: eth0: 
      
        mtu 1500 qdisc pfifo_fast state UP qlen 1000    inet 172.16.22.1/16 brd 172.16.255.255 scope global eth0#=============查看vip已经漂移到apache2节点上=======================[root@jie2 ~]# ip addr show | grep eth02: eth0: 
       
         mtu 1500 qdisc pfifo_fast state UP qlen 1000    inet 172.16.22.1/16 brd 172.16.255.255 scope global eth0    inet 172.16.22.100/32 scope global eth0#=======在apache1上面重新开启http服务，vip已经重新漂移到apache1上=====[root@jie1 conf]# service httpd startStarting httpd:                                            [  OK  ][root@jie1 conf]# ip addr show | grep eth02: eth0: 
        
          mtu 1500 qdisc pfifo_fast state UP qlen 1000    inet 172.16.22.1/16 brd 172.16.255.255 scope global eth0    inet 172.16.22.100/32 scope global eth0[root@jie1 conf]#

成功测试，当apache服务的进程死掉后，vip可以漂移

三、tomcat服务器测试与mysql的连接

tomcat1的配置：

[root@jie3 ~]# cd /usr/local/tomcat/conf/[root@jie3 conf]# vim server.xml#=================tomcat，server.xml的部分相关配置===================
     #监听的端口改为了80   
        
     
      #defaultHost把默认的localhost改为了新建的主机名     
             
            
           
                 
       #新建了一个虚拟主机，站点和网页文件存放在/tomcat/test目录下       
            
         
     ================================部分配置文件==========================#=========利用catalina重启tomcat===========================[root@jie3 conf]# catalina.sh stopUsing CATALINA_BASE:   /usr/local/tomcatUsing CATALINA_HOME:   /usr/local/tomcatUsing CATALINA_TMPDIR: /usr/local/tomcat/tempUsing JRE_HOME:        /usr/java/latestUsing CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar[root@jie3 conf]# catalina.sh startUsing CATALINA_BASE:   /usr/local/tomcatUsing CATALINA_HOME:   /usr/local/tomcatUsing CATALINA_TMPDIR: /usr/local/tomcat/tempUsing JRE_HOME:        /usr/java/latestUsing CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar#==============创建网页根目录和测试连接数据库的网页文件===============#===============博主只是测试了tomcat1上的，各位朋友也可以测试tomcat2上[root@jie3 conf]#mkdir -pv /tomcat/test[root@jie3 conf]# cd /tomcat/test/[root@jie3 test]# vim test.jsp<%@ page language="java" %><%@ page import="com.mysql.jdbc.Driver" %><%@ page import="java.sql.*" %><%String driverName="com.mysql.jdbc.Driver";String userName="jie";String userPasswd="jie123";String dbName="test";String url="jdbc:mysql://172.16.22.200/"+dbName+"?user="+userName+"&password="+userPasswd;Class.forName("com.mysql.jdbc.Driver").newInstance();try{        Connection connection=DriverManager.getConnection(url);        out.println("TomcatA, tomcat connect mysql is ok!");        connection.close();}catch( Exception e ){        out.println( "connent mysql error:" + e );}%>======================================================================#==============在mysql上授权能访问数据库的网段==============[root@jie4 ~]# mysqlmysql> grant all on *.* to 'jie'@'172.16.%.%' identified by 'jie123';mysql> flush privileges;

测试新建的test.jsp测试文件是否可以mysql的连接

测试tomcat连接数据库is ok！

在tomcat安装Jsprun论坛

#=================解压论坛，把论坛的文件存放到网页存放路径中=============[root@jie3 ~]# unzip JspRun\!_6.0.0_GBK.zip[root@jie3 ~]#mkdir  -pv /tomcat/bbs[root@jie3 ~]#cp -rp upload/* /tomcat/bbs/[root@jie3 ~]# cd /usr/local/tomcat/conf/[root@jie3 conf]# vim server.xml#=================tomcat，server.xml的部分相关配置===================
     #之前已经把监听的端口改为了80   
        
     
      #defaultHost改为新建的论坛的虚拟主机名     
             
            
           
                 
       #再新建了一个虚拟主机，站点和网页文件存放在/tomcat/bbs目录下       
            
         
     #===默认的虚拟主机还有www.test.com的虚拟主机的配置文件没给予显示================================部分配置文件==========================#=========利用catalina重启tomcat===========================[root@jie3 conf]# catalina.sh stopUsing CATALINA_BASE:   /usr/local/tomcatUsing CATALINA_HOME:   /usr/local/tomcatUsing CATALINA_TMPDIR: /usr/local/tomcat/tempUsing JRE_HOME:        /usr/java/latestUsing CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar[root@jie3 conf]# catalina.sh startUsing CATALINA_BASE:   /usr/local/tomcatUsing CATALINA_HOME:   /usr/local/tomcatUsing CATALINA_TMPDIR: /usr/local/tomcat/tempUsing JRE_HOME:        /usr/java/latestUsing CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar=======================================================================#==================在数据库上面创建，Jsprun论坛的数据库=============[root@jie4 ~]# mysqlmysql> create database jsprun;Query OK, 1 row affected (0.03 sec)mysql> grant all on jsprun.* to 'jspuser'@'172.16.%.%' identified by 'jspmypass';Query OK, 0 rows affected (0.00 sec)mysql> flush privileges;Query OK, 0 rows affected (0.00 sec)

用浏览器安装Jsprun论坛

论坛已经安装成功

四、apache三种方式实现tomcat的反向代理

1)mod_proxy

apache1&apache2上的配置：两边的配置都是一样

[root@jie1 ~]# vim /usr/local/apache/conf/httpd.conf#==========开启相应的模块，然后添加以下参数============================LoadModule proxy_module modules/mod_proxy.soLoadModule proxy_connect_module modules/mod_proxy_connect.soLoadModule proxy_http_module modules/mod_proxy_http.soLoadModule proxy_ajp_module modules/mod_proxy_ajp.soProxyVia OnProxyRequests OffProxyPreserveHost On
     
         Order deny,allow   Allow from all
     ProxyPass / http://172.16.22.3:80/ProxyPa***everse / http://172.16.22.3:80/======================================================================[root@jie1 ~]# httpd -tSyntax OK[root@jie1 ~]# service httpd reloadReloading httpd:                                           [  OK  ][root@jie1 ~]#scp  /usr/local/apache/conf/httpd.conf 172.16.22.2:/ /usr/local/apache/conf/    #把配置文件copy到apache2上

tomcat1&tomcat2上的配置：两边的配置都是一样

两边都需要创建/tomcat/test目录和index.jsp文件

两边的配置文件都必须一样

[root@jie3 ~]# cd /usr/local/tomcat/conf/[root@jie3 conf]# vim server.xml#=================tomcat，server.xml的部分相关配置===================
     #监听的端口改为了80   
        
     
      #defaultHost把默认的localhost改为了新建的主机名     
             
            
           
                 
       #新建了一个虚拟主机，站点和网页文件存放在/tomcat/test目录下       
            
         
     ================================部分配置文件==========================#=========利用catalina重启tomcat===========================[root@jie3 conf]# catalina.sh stopUsing CATALINA_BASE:   /usr/local/tomcatUsing CATALINA_HOME:   /usr/local/tomcatUsing CATALINA_TMPDIR: /usr/local/tomcat/tempUsing JRE_HOME:        /usr/java/latestUsing CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar[root@jie3 conf]# catalina.sh startUsing CATALINA_BASE:   /usr/local/tomcatUsing CATALINA_HOME:   /usr/local/tomcatUsing CATALINA_TMPDIR: /usr/local/tomcat/tempUsing JRE_HOME:        /usr/java/latestUsing CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar#==============创建网页根目录和测试连接数据库的网页文件===============[root@jie3 conf]#mkdir -pv /tomcat/test[root@jie3 conf]# cd /tomcat/test/[root@jie3 test]# vim index.jsp#=============测试页面==============================================<%@ page language="java" %><%@ page import="java.util.*" %>      JSP test page.        <% out.println("Hello,tomcat1,jie3!"); %>

博主只测试了tomcat1的反向代理

2)mod_proxy_ajp

apache1&apache2的配置：

只需小小修改apache的配置文件中

[root@jie1 ~]# vim /usr/local/apache/conf/httpd.conf#==========开启相应的模块，然后添加以下参数============================LoadModule proxy_module modules/mod_proxy.soLoadModule proxy_connect_module modules/mod_proxy_connect.soLoadModule proxy_http_module modules/mod_proxy_http.soLoadModule proxy_ajp_module modules/mod_proxy_ajp.soProxyVia OnProxyRequests OffProxyPreserveHost On
     
         Order deny,allow   Allow from all
     ProxyPass / ajp://172.16.22.4:8009/ProxyPa***everse / ajp://172.16.22.4:8009/======================================================================[root@jie1 ~]# httpd -tSyntax OK[root@jie1 ~]# service httpd reloadReloading httpd:                                           [  OK  ][root@jie1 ~]#scp  /usr/local/apache/conf/httpd.conf 172.16.22.2:/ /usr/local/apache/conf/    #把配置文件copy到apache2上

tomcat1&tomcat2不需要修改

博主只测试了tomcat2的反向代理

3)mod_jk

之前已经说过，apache要使用mod_jk模块做tomcat的反向代理则必须安装连接tomcat的连接器，连接器已经安装

apache1&apache2的配置：

[root@jie1 ~]# cd /usr/local/apache/conf/[root@jie1 conf]# vim /usr/local/apache/conf/httpd.conf#=========注释掉之前开启的模块，然后添加把之前用mod_proxy的模块添加的内容也注释掉，只添加一句=====================#LoadModule proxy_module modules/mod_proxy.so#LoadModule proxy_connect_module modules/mod_proxy_connect.so#LoadModule proxy_http_module modules/mod_proxy_http.so#LoadModule proxy_ajp_module modules/mod_proxy_ajp.soInclude /usr/local/apache/conf/extra/httpd-jk.conf[root@jie1 extra]# cat /usr/local/apache/conf/extra/httpd-jk.confLoadModule  jk_module  modules/mod_jk.soJkWorkersFile  /usr/local/apache/conf/extra/workers.propertiesJkLogFile  logs/mod_jk.logJkLogLevel  debugJkMount  /*  TomcatAJkMount  /status/  stat1[root@jie1 extra]# cat /usr/local/apache/conf/extra/workers.propertiesworker.list=TomcatA,stat1worker.TomcatA.port=8009worker.TomcatA.host=172.16.22.3worker.TomcatA.type=ajp13worker.TomcatA.lbfactor=1worker.stat1.type = status[root@jie1 extra]#

[root@jie1 ~]# cd /usr/local/apache/conf/[root@jie1 conf]# vim /usr/local/apache/conf/httpd.confLoadModule proxy_module modules/mod_proxy.soLoadModule proxy_connect_module modules/mod_proxy_connect.soLoadModule proxy_http_module modules/mod_proxy_http.soLoadModule proxy_ajp_module modules/mod_proxy_ajp.so#=========Include /usr/local/apache/conf/extra/httpd-jk.conf[root@jie1 extra]# cat /usr/local/apache/conf/extra/httpd-jk.confLoadModule  jk_module  modules/mod_jk.soJkWorkersFile  /usr/local/apache/conf/extra/workers.propertiesJkLogFile  logs/mod_jk.logJkLogLevel  debugJkMount  /*  TomcatAJkMount  /status/  stat1[root@jie1 extra]# cat /usr/local/apache/conf/extra/workers.propertiesworker.list=TomcatA,stat1worker.TomcatA.port=8009worker.TomcatA.host=172.16.22.3worker.TomcatA.type=ajp13worker.TomcatA.lbfactor=1worker.stat1.type = status[root@jie1 extra]#

tomcat1&tomcat2不需要修改

测试mod_jk模式为tomcat1反向代理

自此apache三种方式实现反向代理已经ok了

五、apache三种方式实现tomcat的负载均衡

三种反向代理与三种负载均衡都是以这三种模块mod_proxy、mod_proxy_ajp、mod_jk，只不过每种方式都需要用到负载均衡的模块

1)mod_proxy

apache1&apache2上的配置：两边的配置都是一样

[root@jie1 ~]# cd /usr/local/apache/conf/[root@jie1 conf]# vim /usr/local/apache/conf/httpd.conf#=======================开启这些模块，和添加以下内容===================LoadModule proxy_module modules/mod_proxy.soLoadModule proxy_connect_module modules/mod_proxy_connect.soLoadModule proxy_http_module modules/mod_proxy_http.soLoadModule proxy_ajp_module modules/mod_proxy_ajp.soLoadModule proxy_balancer_module modules/mod_proxy_balancer.soLoadModule proxy_express_module modules/mod_proxy_express.soLoadModule slotmem_shm_module modules/mod_slotmem_shm.soProxyRequests OffProxyVia OnProxyPreserveHost OnProxyRequests Off
     
      BalancerMember ajp://172.16.22.3:8009/  loadfactor=1 route=TomcatABalancerMember ajp://172.16.22.4:8009/  loadfactor=1 route=TomcatAProxySet  lbmethod=bytraffic
     ProxyPass / balancer://jie/ stickysession=jsessionidProxyPa***everse / balancer://jie/=======================================================================[root@jie1 ~]# httpd -tSyntax OK[root@jie1 ~]# service httpd reloadReloading httpd:                                           [  OK  ][root@jie1 ~]#scp  /usr/local/apache/conf/httpd.conf 172.16.22.2:/ /usr/local/apache/conf/    #把配置文件copy到apache2上

tomcat1&tomcat2上的配置：两边的配置基本都是一样

#==================tomcat1的配置文件修改=================================[root@jie3 conf]# vim /usr/local/tomcat/conf/server.xml 
     
      #==================tomcat2的配置文件修改================================[root@jie4 conf]# vim /usr/local/tomcat/conf/server.xml

测试mod_proxy的负载均衡

1)mod_proxy_ajp

apache1&apache2上的配置：两边的配置都是一样

[root@jie1 ~]# cd /usr/local/apache/conf/[root@jie1 conf]# vim /usr/local/apache/conf/httpd.conf#=======================开启这些模块，和添加以下内容===================LoadModule proxy_module modules/mod_proxy.soLoadModule proxy_connect_module modules/mod_proxy_connect.soLoadModule proxy_http_module modules/mod_proxy_http.soLoadModule proxy_ajp_module modules/mod_proxy_ajp.soLoadModule proxy_balancer_module modules/mod_proxy_balancer.soLoadModule proxy_express_module modules/mod_proxy_express.soLoadModule slotmem_shm_module modules/mod_slotmem_shm.soProxyRequests OffProxyVia OnProxyPreserveHost On
     
      BalancerMember http://172.16.22.3:80/ loadfactor=1 route=TomcatABalancerMember http://172.16.22.4:80/ loadfactor=1 route=TomcatBProxySet  lbmethod=bytraffic
     ProxyPass / balancer://jie/ProxyPa***everse / balancer://jie/
     
      Require all granted
     
     
      Require all granted
     =======================================================================[root@jie1 ~]# httpd -tSyntax OK[root@jie1 ~]# service httpd reloadReloading httpd:                                           [  OK  ][root@jie1 ~]#scp  /usr/local/apache/conf/httpd.conf 172.16.22.2:/ /usr/local/apache/conf/    #把配置文件copy到apache2上

tomcat1&tomcat2上不用修改

测试mod_proxy_ajp模块的负载均衡

3)mod_jk

apache1&apache2上的配置：两边的配置都是一样

[root@jie1 ~]# cd /usr/local/apache/conf/[root@jie1 conf]# vim /usr/local/apache/conf/httpd.conf#=========注释掉一些之前开启的模块，然后添加把之前用mod_proxy的模块添加的内容也注释掉，只添加一句=====================#LoadModule proxy_module modules/mod_proxy.so#LoadModule proxy_connect_module modules/mod_proxy_connect.so#LoadModule proxy_http_module modules/mod_proxy_http.so#LoadModule proxy_ajp_module modules/mod_proxy_ajp.soLoadModule proxy_balancer_module modules/mod_proxy_balancer.soLoadModule proxy_express_module modules/mod_proxy_express.soLoadModule slotmem_shm_module modules/mod_slotmem_shm.soLoadModule lbmethod_bytraffic_module modules/mod_lbmethod_bytraffic.soInclude /usr/local/apache/conf/extra/httpd-jk.conf[root@jie1 extra]# vim /usr/local/apache/conf/extra/httpd-jk.conf========================================LoadModule  jk_module  modules/mod_jk.soJkWorkersFile  /usr/local/apache/conf/extra/workers.propertiesJkLogFile  logs/mod_jk.logJkLogLevel  debugJkMount  /*  jieJkMount  /jkstatus/  stat1========================================[root@jie1 extra]# vim /usr/local/apache/conf/extra/workers.properties========================================worker.list = jie,stat1worker.TomcatA.type = ajp13worker.TomcatA.host = 172.16.22.3worker.TomcatA.port = 8009worker.TomcatA.lbfactor = 5worker.TomcatB.type = ajp13worker.TomcatB.host = 172.16.22.4worker.TomcatB.port = 8009worker.TomcatB.lbfactor = 5worker.jie.type = lbworker.jie.method = Rworker.jie.sticky_session = 0worker.jie.balance_workers = TomcatA, TomcatBworker.stat1.type = status========================================[root@jie1 ~]# httpd -tSyntax OK[root@jie1 ~]# service httpd reloadReloading httpd:                                           [  OK  ]#==================可以把修改的这些文件复制到apache2上=================

tomcat1&tomcat2上的配置文件不必修改，在新建一个测试页

[root@jie3 conf]# cd /tomcat/test/[root@jie3 test]# vim session.jsp#=======================session的测试页面==============================<%@ page language="java" %>  TomcatA      TomcatA 
    
     
    <% session.setAttribute("abc","abc"); %>        
                                   Session ID         <%= session.getId() %>              
                             Created on                 <%= session.getCreationTime() %>             
          
     
  ========================================================================