WebSphere® Load Balancer setup

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To setup a single Apache server to work with Load Balancer, your ifconfig file must be modified.

eth0      Link encap:Ethernet  HWaddr 00:09:6B:1A:C2:11
          inet addr:10.10.80.80  Bcast:10.10.80.255  Mask:255.255.255.0
          inet6 addr: fe80::9:6b00:341a:c211/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1492  Metric:1
          RX packets:26873 errors:0 dropped:0 overruns:0 frame:0
          TX packets:38275 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3024755 (2.8 Mb)  TX bytes:43256184 (41.2 Mb)

eth1      Link encap:Ethernet  HWaddr 02:00:00:00:00:03
          inet addr:192.168.30.80  Bcast:192.168.30.255  Mask:255.255.255.0
          inet6 addr: fe80::200:0:900:3/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1492  Metric:1
          RX packets:32802244 errors:0 dropped:0 overruns:0 frame:0
          TX packets:32799805 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3028590615 (2888.2 Mb)  TX bytes:4077951685 (3889.0 Mb)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:2442 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2442 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:218635 (213.5 Kb)  TX bytes:218635 (213.5 Kb)
The /etc/hosts file needs to be as follows: 
#
# hosts         This file describes a number of hostname-to-address
#               mappings for the TCP/IP subsystem.  It is mostly
#               used at boot time, when no name servers are running.
#               On small systems, this file can be used instead of a
#               "named" name server.
# Syntax:
#
# IP-Address  Full-Qualified-Hostname  Short-Hostname
#

127.0.0.1       localhost

# special IPv6 addresses
::1             localhost ipv6-localhost ipv6-loopback

fe00::0         ipv6-localnet

ff00::0         ipv6-mcastprefix
ff02::1         ipv6-allnodes
ff02::2         ipv6-allrouters
ff02::3         ipv6-allhosts
192.168.30.82   www.ptest.com
10.10.80.82     www.ptest2.com
192.168.30.100  webserver1.vlan1.com webserver1
192.168.30.80   lbserver.pdl.pok.ibm.com lbserver
lbserver:~ #
A start script and a stop script are needed for Load Balancer. Both scripts are run from the root. The start script we used was load_balancer_start.sh and looked like: 
#!/bin/bash
dsserver start
sleep 5
dscontrol executor start
dscontrol cluster add www.ptest.com
dscontrol port add www.ptest.com@80
dscontrol port add www.ptest.com@443
dscontrol server add www.ptest.com@80@webserver1.vlan1.com
dscontrol server add www.ptest.com@443@webserver1.vlan1.com
dscontrol executor configure www.ptest.com
dscontrol manager start
dscontrol advisor start http 80
dscontrol server report www.ptest.com@80@webserver1.vlan1.com
dscontrol server status www.ptest.com@80@webserver1.vlan1.com
ifconfig eth1:0 192.168.30.82 netmask 255.255.255.0 up
#ifconfig
exit
The stop script we used was load_balancer_stop.sh and looked like: 
#!/bin/bash
#
dscontrol manager stop
dscontrol executor stop
dsserver stop