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Michael Spiegle schreef:
> What you'll want to do with regards to storage is get some sort of file
> server (homemade linux box, netapp, EMC, isilon, etc, etc), then mount
> it to all of your webservers. That way, when an HTTP request comes in,
> all webservers will read and write to the same location.
I have recently set up a two-node cluster, both servers configured
identically, both handling HTTP, HTTPS and FTP connections over LVS.
Both machines are capable of playing the role of LVS director, but only
one is active at once. Monitoring of real servers is done with Mon.
Files are on a DRBD device, which is exported over NFS. Failover of LVS
(VIP + rules), DRBD, NFS and MySQL (also on DRBD) is handled by
Heartbeat. Works like a charm!!
The information on http://www.linux-ha.org/DRBD/NFS was extremely useful.
Best regards,
Martijn Grendelman
>
> webbezcom wrote:
>> I know you don't need a license to run LVS but I mean control panel as in
>> Cpanel the hosting control. Normally you would have a cpanel control panel
>> license for per server basis for end users to use but on a server cluster
>> would each real server require a license. Since you license it to one ip
>> would one license function on the whole cluster?
>>
>> I only want to balancing two servers currently since i don't require more.
>>
>> The reason i ask if third layer topology because i don't understand how two
>> real servers can have the same information on them, using rysnc would hardly
>> be fast enough since many of my sites have dynamic content. Obviously having
>> a central storage server means content is readily available.
>>
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