Radware DNS全局配置.docx

1、Radware DNS全局配置Radware AppDirector实现基于DNS重定向的全局负载均衡（多主站点） 2009年1月 -前言：本配置实现了两个主站点互为备份的全局负载均衡（基于DNS重定向）Loadbalancer: AppDirector-1000 ver:1.03.04 两台Web server: Apache Application server: WebDatabase: Oracle 10使用到的技术：DNS重定向，Static/Dynamic Proximity（LRP/PRP） ，ClientNAT，Session persistency，Advanced heal

2、th monitor访问流程：用户请求，域名解析最终由2台AD-global通过就近性（静态结合动态的方式）给出，即移动用户访问位于山西移动的节点，新联通用户访问位于山西新联通的节点。 此网站采用web http server、bluecoat cache 数据库实现。拓扑图：管理软件显示画面配置过程：移动 AD-global:1.Configure web FarmDNS redirection Farm ( Apache Farm)，please be noticed that “Distribution Threshold” should be 0. If “Distribution T

3、hreshold” not set to “0” for example “2500 for default”, AD will consider local server first and dont use proximity , when local server attached user reach to 2500 AD then distribute request to “distributed AppDirector”.2.Add Distributed AppDirector (新联通 Layer4 policy ip)3.Add Local server4. Add Lay

4、er 4 policy ip5. Add LRP report6. Config DNS7. 配置client NAT 因为Cache server和AD在同一网段，需要配置client NAT.8. Enable ClientNAT for Web Farm.8.Add cache server and enable ClientNAT on server10. Configure advanced health check. Because Apache need forward all request to Web, so if Web server is down then Apach

5、e must be recognized as down.Advanced health check:11. Configure Proximity 实现两地用户访问12. To check server attached userStatistics:13. To check cookie/server bind新联通 AD-global:1.Configure Apache Farmplease be noticed that “Distribution Threshold” should be 0. If “Distribution Threshold” not set to “0” f

6、or example “2500 for default”, AD will consider local server first and dont use proximity , when local server attached user reach to 2500 AD then distribute request to “distributed AppDirector”.2.Add Distributed AppDirector (移动 Layer4 policy ip)3.Add Local server4. Add Layer 4 policy ip5. Add LRP re

7、port6. Config DNS7. Add Client NAT 因为radware和cache在同一网段，需要配置client NAT.Application server ( Web server): 8.Add web server and enable ClientNAT on server9. Configure advanced health check.Because Apache need forward all request to Web, so if Web server is down then Apache must be recognized as down.Advanced health check:11. Configure Proximity 实现南北用户访问12. To check server attached user13. To check cookie/server bind