Tomcat实现session保持案例(2)

Header add Set-Cookie "ROUTEID=.%{BALANCER_WORKER_ROUTE}e; path=/" env=BALANCER_ROUTE_CHANGED
<proxy balancer://lbcluster1>
        BalancerMember :8080 loadfactor=10 route=TomcatA
        BalancerMember :8080 loadfactor=10 route=TomcatB
        ProxySet stickysession=ROUTEID
</proxy>

测试后发现session绑定成功

使用ajp连接：只需要修改两行
#Header add Set-Cookie "ROUTEID=.%{BALANCER_WORKER_ROUTE}e; path=/" env=BALANCER_ROUTE_CHANGED
注释上面一行是因为使用ajp协议的话只需要ProxySet stickysession=ROUTEID一条语句即可绑定
<proxy balancer://lbcluster1>
        BalancerMember ajp://172.16.100.68:8009 loadfactor=10 route=TomcatA
        BalancerMember ajp://172.16.100.69:8009 loadfactor=10 route=TomcatB
        ProxySet stickysession=ROUTEID
</proxy>

方案三：使用mod_jk作反向代理，使用mod_jk后端连接只能使用ajp协议
tar  xf tomcat-connectors-1.2.40-src.tar.gz
cd tomcat-connectors-1.2.40-src/native
准备编译环境：
yum install httpd-devel gcc glibc-devel
yum groupinstall "Development tools"
mod_jk依赖于apxs
[root@node3 rpm]# which apxs
/usr/sbin/apxs
在native目录下：
./configure --with-apxs=/usr/sbin/apxs
装载mod_jk模块：在httpd.conf文件中：
LoadModule  jk_module  modules/mod_jk.so
查看是否装载成功：
[root@node3 conf]# httpd -M | grep jk
Syntax OK
 jk_module (shared)
配置jk_module属性：httpd.conf中
JkWorkersFile  /etc/httpd/conf.d/workers.properties
JkLogFile  logs/mod_jk.log
JkLogLevel  debug
JkMount  /*  TomcatA  #此处的TomcatA必须与后端Tomcat的engine中定义哪个TomcatA的一致
JkMount  /status/  stat1
创建/etc/httpd/conf.d/workers.properties
worker.list=TomcatA,stat1
worker.TomcatA.port=8009
worker.TomcatA.host=192.168.20.1
worker.TomcatA.type=ajp13
worker.TomcatA.lbfactor=1
worker.stat1.type = status
访问mod_jk自带的status页面：此页面也有管理功能

改为负载均衡：并且会话绑定功能
修改httpd.conf：
JkWorkersFile  /etc/httpd/conf.d/workers.properties
JkLogFile  logs/mod_jk.log
JkLogLevel  debug
JkMount  /*  lbcluster1
JkMount  /jkstatus/  stat1
修改/etc/httpd/conf.d/workers.properties
worker.list = lbcluster1,stat1
worker.TomcatA.type = ajp13
worker.TomcatA.host = 192.168.20.1
worker.TomcatA.port = 8009
worker.TomcatA.lbfactor = 5
worker.TomcatB.type = ajp13
worker.TomcatB.host = 192.168.20.2
worker.TomcatB.port = 8009
worker.TomcatB.lbfactor = 5
worker.lbcluster1.type = lb
worker.lbcluster1.sticky_session = 1
worker.lbcluster1.balance_workers = TomcatA, TomcatB
worker.stat1.type = status
测试成功

介绍：proxy-balancer-manager模块页面的使用

<proxy balancer://lbcluster1>
        BalancerMember :8080 loadfactor=10 route=TomcatA
        BalancerMember :8080 loadfactor=10 route=TomcatB
        ProxySet stickysession=ROUTEID
</proxy>
<VirtualHost *:80>
    ServerName web1.lee.com
    ProxyVia On
    ProxyRequests Off
    ProxyPreserveHost On
    <Location /balancer-manager>
        SetHandler balancer-manager
        ProxyPass !
        Order Deny,Allow
        Allow from all
    </Location>
 
    <Proxy *>
        Order Deny,Allow
        Allow from all
    </Proxy>
    ProxyPass /status !
    ProxyPass / balancer://lbcluster1/
    ProxyPassReverse / balancer://lbcluster1/
    <Location />
        Order Deny,Allow
        Allow from all
    </Location>
</VirtualHost>

测试：

delta-manager实现会话复制集群实现