[horde] Can Multiple Horde systems share one TCP MySQL Database?

[Ralf Lang]

On 12.08.2014 12:07, L. D. James wrote:
> On 08/12/2014 05:58 AM, Jan Schneider wrote:
>>
>> Zitat von L. D. James <ljames at apollo3.com>:
>>
>>> If there would be problems with two different Horde systems sharing
>>> one MySQL database, can someone describe it to me?
>>>
>>> Whatever the problem happen to be, if any, I'll try to use my
>>> programming skills to resolve the issues.
>>>
>>> Thanks!
>>>
>>> -- L. James
>>>
>>> -- 
>>> L. D. James
>>> ljames at apollo3.com
>>> www.apollo3.com/~ljames
>>
>> If you are talking about different Horde *versions* then you will run
>> into so many problems that you shouldn't even think about it.
>>
>> Otherwise the question is why do you want to use the same database?
>> It's a huge difference if you want to do things like load
>> balancing/fallover or run different configurations for different domains.
>>
> My reasons include the ones you mentioned below.  It also includes that
> I'll be working with other applications and interfacing my applications
> to the same database.  I have done this for over 20 years flawlessly
> with my Forums.
> 
> Thanks for your generous support on this maillist!
> 
> -- L. James
> 

If you want load balancing with 2 web nodes of horde on 1 db node, you
need to care about some issues:

* A shared VFS backend if you use VFS
* A shared session backend or Apache Session Stickiness.
* Stuff I currently don't remember

-- 
Ralf Lang
Linux Consultant / Developer
Tel.: +49-170-6381563
Mail: lang at b1-systems.de
B1 Systems GmbH
Osterfeldstraße 7 / 85088 Vohburg / http://www.b1-systems.de
GF: Ralph Dehner / Unternehmenssitz: Vohburg / AG: Ingolstadt,HRB 3537

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