Re: SSL offload and load balancing with Apache2's mod_proxy and mod_balancer for Weblogic, Tomcat and Apache2

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Hi Margus,

Yes, from your description "there 2 Apache instances running on the
same machine" I took it that these were running on the same machine.
Actually, I had assumed you were running ssl termination + load
balancer + destination web server all on the same box, and I was
wondering what the point was :)

If you are actually putting the different parts on different machines,
then this sounds fine.  The best configuration will depend on the load
in the different parts of your system.

Liam

On Mon, Feb 7, 2011 at 8:35 AM, Margus Pärt <margus@xxxxxxxx> wrote:
> Hello!
>
> Thank you for your response!
>
> True, the load would be twice as high, but my tests showed, that even with
> that setup, in front of multiple webservers (with a simple php page) which
> load with tests went to sky high turing load tests, one balancer in Vmware
> with this config and 512MB RAM & one 1Ghz proccessor was enough and it's
> load was between 4-12. So, I think that load should not be issue, also its
> possible to add more than one SSL offloader and balancer with same
> configuration.
>
> Please correct me if I'm wrong, but by any change, did you think, that my
> applications are on the same server also? Or did you suggest, that I should
> have SSL terminating and balancing on separate machines?
>
> Br,
> Margus
>
>
>
> On 02/06/2011 11:00 PM, Liam O'Boyle wrote:
>>
>> Hi Margus,
>>
>> The point of these things (SSL termination and load balancing) is to
>> generally distribute the workload across multiple machines, allowing a
>> site to scale to a larger number of visitors.  If you're doing them
>> all on one machine, it's actually worse, as now you have all the same
>> work being done on one machine, but you have the overhead of multiple
>> apache instances and a more complex setup as well.
>>
>> Liam
>>
>> On Mon, Feb 7, 2011 at 12:25 AM, Margus Pärt<margus@xxxxxxxx>  wrote:
>>>
>>> Hello!
>>>
>>>
>>> I had an idea, how to SSL offload and Load balance with Apache2 a bit
>>> differently, and I implemented it also.
>>>
>>> Basically there 2 Apache instances running on the same machine with
>>> different configurations, one for SSL offload, other for balancing -
>>> client
>>> ->  SSL offload ->  Balancer ->  backend server.
>>>
>>>
>>> If anyone would give feedback, just in form: "I like it" or "it's
>>> useless",
>>> I'd be glad. More detailed and constructive feedback would be even more
>>> appreciated.
>>>
>>>
>>>
>>>
>>> Project homepage and referrals to .pdf and .odf files are:
>>> https://code.google.com/p/apache2-ssloffload-and-loadbalance/
>>>
>>>
>>> Best regards,
>>> Margus Pärt
>>>
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