Haproxy, Nginx, and httpd load balancing tomcat host, seesion retention issues

* * Experimental Environment * *

CentOS 7

Haproxy (Nginx): 172.16.61.4 (NODE4)

httpd+tomcat:172.16.61.7 (Node7)

172.16.61.8 (Node8)

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First, using Nginx to do load balancing

* * Configuring Tomcat and httpd**

<engine name= "Catalina"  defaulthost= "localhost"  jvmroute= "Tomcat8" >   # Add Jvmroute tags to the node8 node for intuitive viewing of load balancing effects (Node7 node is Tomcat7)  
* * Configuration nginx**

 
  
 
 
  
 
Upstream Tcsrvs {#在nginx配置文件中定义upsteam模块, the default polling scheduling algorithm server node8:80;    #基于主机名调度, the local hosts file to parse back-end hostname server node7:80;    }location/{#在server中定义location进行反向代理 proxy_set_header Host $http _host;        #将客户端请求的host代理至后端 Proxy_pass http://tcsrvs/; }
Configure local Hosts file, resolve 172.16.61.4 node8.tz.com address

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Realize the effect of polling

**haproxy Load Balancing tomcat**

 
  
 
 
  
 
[[email protected] haproxy]# sed  ' [Email protected]^#.*\+\|^[[:space:]]\+#.*\[email  protected]@ '  haproxy.cfgglobal   log          127.0.0.1 local2    chroot      /var/lib/haproxy     pidfile     /var/run/haproxy.pid     maxconn     4000    user         haproxy    group       haproxy     daemon    stats socket /var/lib/haproxy/statsdefaults     mode                     http    log                      global    option                   httplog     option                   dontlognull    option http-server-close    option  forwardfor       except 127.0.0.0/8     option                   redispatch    retries                  3    timeout http-request     10s    timeout queue            1m   &nbsP;timeout connect         10s    timeout  client          1m    timeout  server          1m    timeout  http-keep-alive 10s    timeout check            10s    maxconn                  3000frontend  main *:80     default_backend        tomcatlisten statisticsbind  *:9090stats enablestatshide-versionstats uri   /haproxyadmin?statsstats  realm   "Haproxy\ statistics" stats auth    admin:tianzhuangstats  Adminif truebackend toMcat    balance     roundrobin    server       tomcat1 172.16.61.7:80 check     Servertomcat2 172.16.61.8:80 check
**HTTPD Load Balancer Configuration * *

 
  
 
 
  
 
<proxy balancer://tccluster>        BalancerMember  http://172.16.61.7:80 loadfactor=1        balancermember  Http://172.16.61.8:80 loadfactor=1        ProxySet lbmethod= Bytraffic</proxy><virtualhost *:80>        servername   localhost        ProxyRequests Off         proxyvia  on        proxypass  / balancer://tccluster/        proxypassreverse /  balancer://tccluster/        ProxyPreserveHost On         <Proxy *>           require all granted        </proxy>         <location />          require  all granted        </Location></VirtualHost>

* * Keep Session Sessions * *

 
  
 
 
  
 
 
 

  
  
 
   
Nginx Load Balancer Session retention problem:
 
 
  
 
 
Upstream Tcsrvs {server node8:80;        Server node7:80;            Ip_hash;  #基于客户端地址进行hash, the request from the same IP is sent to the same server# hash $request _uri;  #基于请求的uri hash, applied to the backend cache server;# hash $remote _addr;    #基于远程客户端地址hash, equivalent to Ip_hash; }


 
 

  
  
 
   
Haproxy Load Balancing session hold problem:
 
 
  
 
 
Backend Tomcat balance Roundrobin cookie Tomcat insert NoCache #在后端主机的响应报文中插入cookie server to MCAT1 172.16.61.7:80 Check Cookie tomcat1 server tomcat2 172.16.61.8:80 Check cookie TOMCAT2


 
 

  
  
 
   
HTTPD load Balancing session hold problem:
 
 
  
 
 
[[email protected] conf.d]# cat proxy.conf header add set-cookie  " routeid=.%{balancer_worker_route}e; path=/" env=BALANCER_ROUTE_CHANGED                #增加头部的session信息 with route as the keyword <proxy balancer:// tccluster>balancermember http://172.16.61.7:80 loadfactor=1 route=tomcat7  # The route is TOMCAT7, and the backend tomcat server needs to add the route information balancermember http://172.16.61.8:80 loadfactor=1  route=Tomcat8ProxySet lbmethod=bytrafficProxySet stickysession=ROUTEID</proxy>< virtualhost *:80>        servername   localhostproxyrequests offproxyvia  onproxypass / balancer://tccluster/ proxypassreverse / balancer://tccluster/proxypreservehost on<proxy *>   Require all granted</proxy><location />  Require all granted</Location></VirtualHost> 







Haproxy, Nginx, and httpd load balancing tomcat host, seesion retention issues