Hi pluggers,
We are running our proxy server on an aging 1U-chassis Dell server
installed with RH9.0. Performance, over the years, has been
satisfactory. But during our operations review, the management
identified it as a single-point of failure, should the box goes down,
some segment of our network will not be able to reach the internet.
We want to implement a highly-available web cache solution using squid.
There was an initial attempt (the sys admin originally handling this has
resigned) to configure 2 x Dell 1850 with RH ES3.0, heartbeat and ipfail
but the behavior is not very satisfactory - they only detect when the
network goes down, no service fail-over will occur when other resources
caused the problem.
I'm reading Linux Virtual Server tutorial from
http://www.ultramonkey.org and I think there's a way to expand the
cluster's configuration (to include more resources under cluster
control). But I would like to ask if anybody has implemented a
linux-based web-cache cluster. Perhaps I can replicate your approach
rather than work from the ground up.
* An active-passive solution is acceptable.
* Content filtering is not necessary (the cluster will be deployed in
front of the application servers, this is not for human users).
* The cluster solution should monitor at least the following resources -
network interface, the health of squid daemon, and the disk partitions
used by squid.
Thanks in advance.
-ramer-
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