Doubt with configuration

[Cristiano Diedrich]

Hi,

Sorry for my english ...

My question is:
I have several backend web server (apache) and vanish in front of them to
carry out the contention of cache pages.Like all sites link to the server
vanish when there is a fault with him all the sites were down, right?
How can this issue be addressed? using the CARP with replication through
drbd?
How can I work in an environment like this?

This environment is not in production, I'm just planning how I can improve
my web server environment.
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