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Alan Murrell wrote:
>
> Hello Again,
The director load balances virtual services.
A virtual service is something that the outside
world sees as VIP:port (eg www.foo.com:80).
The director can have any balance any number of
virtual services, each virtual service being
forwarded to its own set of realservers. Each
realserver may be servicing 1..n virtual services.
So RS1..4 could be servicing VIP1:80,
RS1,2 could be servicing VIP2:23
RS1,4 could be servicing VIP3:80
each virtual service can have its own forwarding
method (LVS-NAT,-DR, -Tun) and scheduler (rr, lc...)
The RIPs that the realservers have are independant
of the VIPs. In the above example, all realservers
could be on the same network (eg 192.168.1.0/24)
or they could be on different networks (eg RS1
could have 3 IPs, one for each virtual service).
Joe
--
Joseph Mack PhD, Senior Systems Engineer, SAIC contractor
to the National Environmental Supercomputer Center,
ph# 919-541-0007, RTP, NC, USA. mailto:mack.joseph@xxxxxxx
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