Pound Web server Load balancer

Install Pound to make the server load balancer.
This example shows to configure on the environment like follows
(1) www.server.world       [10.0.0.50]   Pound Server
(2) www01.server.world   [10.0.0.51]   Web Server#1 ( receive requests to www.server.world )
(3) www02.server.world   [10.0.0.52]   Web Server#2 ( receive requests to www.server.world )
(4) www03.server.world   [10.0.0.53]   Web Server#3 ( receive requests to www.virtual.host )
(5) www04.server.world   [10.0.0.54]   Web Server#4 ( receive requests to anything except them above )
[1] Install and Configure Pound

[root@www ~]#  yum --enablerepo=epel -y install Pound     # install from EPEL [root@www ~]#  vi /etc/pound.cfg # line 13: add ( log level - max=5 ) LogLevel 3 # line 14: add ( Interval of heartbeat - seconds ) Alive 30 # line 21-25: make it comments # ListenHTTPS #    Address 0.0.0.0 #    Port 443 #    Cert "/etc/pki/tls/certs/pound.pem" # End Service # for the requests to www.server.world HeadRequire "Host: .*www.server.world" BackEnd # backend server's IP address Address  10.0.0.51 # backend server's port Port  80 End BackEnd # backend server's IP address Address  10.0.0.52 # backend server's port Port  80 End End Service # for the requests to www.virtual.host HeadRequire "Host: .*www.virtual.host" BackEnd # backend server's IP address Address 10.0.0.53 # backend server's port Port 80 End End Service # for the requests to anything except them avobe HeadRequire "Host: .*" BackEnd # backend server's IP address Address 10.0.0.54 # backend server's port Port 80 End End [root@www ~]#  /etc/rc.d/init.d/pound start  Starting Pound: starting... [ OK ] [root@www ~]#  chkconfig pound on

[2]	Access to the Pound Server ( www.server.world ) with Web browser and make sure www01.server.world answers like follows.

[3]	Shutdown www01.server.world by manually, then www02.server.world answers like follows.

[4]	Access to the URI www.virtual.host, then www03.server.world answers like follows.

[5]	Access to the IP address directly, then www04.server.world answered.