>> John, thanks for your answer, I think I'm looking for a hihg
performance
>> cluster with two pcs... Apache, Mailscanner/Postfix, mysqld and squid
>> are going to run in this cluster..
>>
>Each of those apps has its own requirements for a shared workload
<cluster. frankly, I have no idea how a squid cluster could or would
work.
>webservers like apache are most frequently clustered by being put
behind
>a load balancing router such as BigIP from F5. this is $$$$$$.
>mysql has its own clustering support, I'm not very familiar with it.
>typically, these require shared storage.
>not sure why you'd need to cluster a mail server other than high
>availability, this typically requires shared storage for the spool
files
>and such.
>I have no idea how you'd loadbalance cluster a squid cacheing proxy
>between two systems with discrete SATA drives. maybe if the squid
cache
>was stored on a NFS server?
>frankly, with that workload, and the hardware resources you described,
>you'd probably get the best performance by balancing the applications
>across the two systems. whichever app requires the most resource, put
>it on one, put the rest on the other. if the 'other' is overloaded,
>move another task to the first.
John, I'm reading now some stuff of clustering from internet, thanks for
your opinion, let me ask you, (maybe a stupid question), which are the
common applications used on cluster's systems? Web?
Regards,
Israel
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