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The network guys at my place of employemnt came up with this colocation
scheme that I need to implement. Here is what we have now:
Two locations in different states running nearly identical setups of
Apache/Jserv on Linux 6.1 using Sun's JDK 1.2.2 and JSDK 2.
They want me to duplicate each state's instance of the Apache/Jserv on each
machine. That is, on State 1's machine, we have a duplicate Apache/Jserv
instance that can come online if something were to happen to State 2's
Apache/Jserv instance and vice versa.
My question is what is the best way to go about this? My first thought is to
make two different builds of Apache/Jserv on each machine: one listens to
one ethernet adapter and the other listens to a second ethernet adapter
(there are two NICs installed). A possible downside is that I will have two
separate versions of Apache and Jserv running in memory, not mention adding
more load to the machine.
The other possibility is to set up virtual hosting so that when State 1 goes
down, we just reroute through DNS to the State 2's Apache/Jserv but to a
different port. Now that I think about it, I hardly hav an idea how to
implement this part; the only difference between the two State's instances
is the servlet class files. I could just create a second repository for each
site on each machine. Does this make sense?
Which scenario sounds the best keeping in mind the extra load and
performance loss associated with the increased load? Any ideas would be
greatly appreciated.
Ben Ricker
US-Rx
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