Tomcat反带和集群-白红宇

Tomcat反带和集群

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发布时间：2019-06-14

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Nginx|Apache反带用户请求到Tomcat

LNMT：

client -->http --> nginx --> reverse_proxy --> http --> tomcat (http connector)location ~* \.(jsp|do)$ {proxy_pass http://web1.evescn.com:8080;}

LAMT：

client --> http --> httpd --> reverse_proxy --> {http|ajp} --> tomcat {http connector|ajp connector}

反代模块：    主：proxy_module    子：proxy_module_http, proxy_module_ajp

proxy_module_http:    
     
              ServerName web1.evescn.com        ProxyVia On        ProxyRequests Off    # 开启反向代理时，需要关闭正向代理        ProxyPreserveHost On # 直接反带用户请求的虚拟主机名        
      
                   Require all granted        
              ProxyPass / http://172.16.100.67:8080/        ProxyPassReverse / http://172.16.100.67:8080/        
                  Require all granted

proxy_module_ajp:    
     
              ServerName web1.evescn.com        ProxyVia On        ProxyRequests Off        ProxyPreserveHost On        
      
                   Require all granted        
              ProxyPass /status !        ProxyPass / ajp://172.16.100.67:8009/        ProxyPassReverse / ajp://172.16.100.67:8009/        
                  Require all granted

LNAMT：

client -->http --> nginx -->  httpd --> reverse_proxy --> {http|ajp} --> tomcat {http connector|ajp connector}

Tomcat会话保持

session sticky    source ip    cookiesession cluster: session server    kv: memcached, redis

Tomcat集群

(1) LB tomcat

nginx tomcats （upsteam模块）apache tomcats

(2) LB tomcat cluster

(3) LB tomcat

session server    memcached

apache: tomcats

(1) apache:        mod_proxy        mod_proxy_http        mod_proxy_balancer    tomcat:        http connector(2) apache:         mod_proxy        mod_proxy_ajp        mod_proxy_balancer	    tomcat:        ajp connector(3) apache:        mod_jk    tomcat:        ajp connector

第一种方法的实现：


     
          BalancerMember http://172.16.100.68:8080 loadfactor=10 route=TomcatA    BalancerMember http://172.16.100.69:8080 loadfactor=10 route=TomcatB
     
     
          ServerName web1.evescn.com    ProxyVia On    ProxyRequests Off    ProxyPreserveHost On    
      
               Require all granted    
          ProxyPass / balancer://lbcluster1/    ProxyPassReverse / balancer://lbcluster1/    
              Require all granted

　　如果需要会话绑定：

Header add Set-Cookie "ROUTEID=.%{BALANCER_WORKER_ROUTE}e; path=/" env=BALANCER_ROUTE_CHANGED
     
          BalancerMember http://172.16.100.68:8080 loadfactor=10 route=TomcatA    BalancerMember http://172.16.100.69:8080 loadfactor=10 route=TomcatB	ProxySet stickysession=ROUTEID
     
     
          ServerName web1.evescn.com    ProxyVia On    ProxyRequests Off    ProxyPreserveHost On    
      
               Require all granted    
          ProxyPass / balancer://lbcluster1/    ProxyPassReverse / balancer://lbcluster1/    
              Require all granted

第二种方法的实现：

#Header add Set-Cookie "ROUTEID=.%{BALANCER_WORKER_ROUTE}e; path=/" env=BALANCER_ROUTE_CHANGED
     
          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
     
     
          ServerName web1.evescn.com    ProxyVia On    ProxyRequests Off    ProxyPreserveHost On    
      
               Require all granted    
          ProxyPass / balancer://lbcluster1/    ProxyPassReverse / balancer://lbcluster1/    
              Require all granted

补充:mod_proxy_balancer模块内置的manager：


     
      	SetHandler balancer-manager	Proxypass !	Order Deny,Allow	Allow from all

第三种方式：

mod_jk：额外编译安装

(1) 反向代理	模块配置文件：mod_jk.conf 		LoadModule  jk_module  modules/mod_jk.so		JkWorkersFile  /etc/httpd/conf.d/workers.properties		JkLogFile  logs/mod_jk.log		JkLogLevel  debug		JkMount  /*  TomcatA		JkMount  /status/  stat1	workers配置文件：workers.properties		worker.list=TomcatA,stat1		worker.TomcatA.port=8009		worker.TomcatA.host=172.16.100.68		worker.TomcatA.type=ajp13		worker.TomcatA.lbfactor=1		worker.stat1.type = status	注意：status的访问要做访问控制；

(2) 负载均衡	模块配置文件：mod_jk.conf		LoadModule  jk_module  modules/mod_jk.so		JkWorkersFile  /etc/httpd/conf.d/workers.properties		JkLogFile  logs/mod_jk.log		JkLogLevel  debug		JkMount  /*  lbcluster1		JkMount  /status/  stat1	workers配置文件：workers.properties		worker.list = lbcluster1,stat1		worker.TomcatA.type = ajp13		worker.TomcatA.host = 172.16.100.68		worker.TomcatA.port = 8009		worker.TomcatA.lbfactor = 1		worker.TomcatB.type = ajp13		worker.TomcatB.host = 172.16.100.69		worker.TomcatB.port = 8009		worker.TomcatB.lbfactor = 1		worker.lbcluster1.type = lb		worker.lbcluster1.sticky_session = 0		worker.lbcluster1.balance_workers = TomcatA, TomcatB		worker.stat1.type = status

Session Cluster：

session manager：会话管理器    StandardManager    PersistentManager：    FileStore    JDBC    DeltaManager    BackupManager

构建步骤：(1) 各节点配置使用deltamaanager：    
               
                
                  
                   
                   
                     
                    
                   
                   
                 
                
                
                
                
          
     (2) 为需要使用session cluster的webapps开启session distribution的功能：   	WEB-INF/web.xml中添加