tomcat多虚拟主机配置+httpd 反向代理

1.tomcat 设置
<Engine name="Catalina" defaultHost="www.bbb.com">  #Engine默认主机defaultHost
      <Realm className="org.apache.catalina.realm.LockOutRealm">
        <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
               resourceName="UserDatabase"/>
      </Realm>

      <Host name="www.aaa.com"  appBase="webapps"unpackWARs="true" autoDeploy="true">
        <Context path="/test" docBase="/data/test" reloadable="false" />
        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
               prefix="localhostA_access_log" suffix=".txt"
               pattern="%h %l %u %t "%r" %s %b" />
      </Host>

      <Host name="www.bbb.com"  appBase="website"unpackWARs="true" autoDeploy="true">
        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
               prefix="localhostB_access_log" suffix=".txt"
               pattern="%h %l %u %t "%r" %s %b" />
      </Host>
    </Engine>

2.创建页面
echo /usr/local/tomcat/webapps/ROOT/index.html >  /usr/local/tomcat/webapps/ROOT/index.html

mkdir /usr/local/tomcat/website/ROOT/
echo www.bbb.com/index.jsp > website/ROOT/index.jsp

　　

[root@localhost7A ]# cat /etc/httpd/conf.d/magedu.conf 
<VirtualHost *:80>
 ServerName www.magedu.com
 ProxyRequests Off
 ProxyVia On
 ProxyPreserveHost off
 ProxyPass / http://www.aaa.com:8080
 ProxyPassReverse / http://www.aaa.com:8080
</VirtualHost>

[root@localhost7A ]# cat /etc/httpd/conf.d/magedu.conf 
<VirtualHost *:80>
 ServerName www.zzhz.com
 ProxyRequests Off
 ProxyVia On
 ProxyPreserveHost off      #重点：如果ServerName 是一个新域名，如www.magedu.net  那么此选项应该为off.
 ProxyPass / http://www.bbb.com:8080
 ProxyPassReverse / http://www.bbb.com:8080
</VirtualHost>

　　

5.添加nginx和tomcat和客户端hosts解析
192.168.80.100 www.magedu.net www.zzhz.com
192.168.80.140 www.aaa.com  www.bbb.com



6.测试中发现的问题：httpd中的ServerName指一个新的域名：如上面的www.magedu.net ,测试结果都访问到Engine中defaultHost="www.bbb.com 指定的服务器上,
因为ProxyPreserveHost：On开启。让代理保留原请求的Host首部(www.magedu.net),此时后端服务器无法识别。当off时，首部为www.aaa.com，而tomcat中定义了。

[root@localhost6B ~]# curl www.magedu.net
/usr/local/tomcat/webapps/ROOT/index.html
[root@localhost6B ~]# curl www.magedu.net  #当ProxyPreserveHost on 时，走的是Engine默认主机www.bbb.com
www.bbb.com/index.jsp

[root@localhost6B ~]# curl www.zzhz.com
www.bbb.com/index.jsp
[root@localhost6B ~]# curl www.zzhz.com
www.bbb.com/index.jsp