Damian,<div><br></div><div>Most data is stored in the database. You can 'sync' (replicate) databases using mysql master slave, or master master configurations. For webserver files for things such as images or themes, you will have to use a setup like rsync to copy files from one place to another. <div>
<br></div><div>You can also use configurations like a reverse proxy to allow more than one webserver to serve files out of a central location (load balanced cluster). Most reverse proxies can be configured to make certain URLs or folders to be served from just one server, and that server host the uploaded files. </div>
<div><br></div><div>You might need to do some research on clustering webservers, and clustering databases, they are completely different concepts. You can cluster one or the other, or both. No one here can tell you exactly what to do, because we don't know what resources you have available, and ultimately you will be responsible for the maintenance and backup plans. We don't know the purpose of your drupal installation, or the load, etc. <br>
<div><div><br></div><div><br></div><div>Justin Edwards<br>TeleLanguage Inc,<br>Network Administrator<br><br>
<br><br><div class="gmail_quote">On Wed, Nov 3, 2010 at 2:20 PM, Damian Adriel Perez Valdes <span dir="ltr"><<a href="mailto:damian.adriel@gmail.com">damian.adriel@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
The principal Idea I have. The owner of one website can add information to his site, but i want that this sites sync with all others sites and include the others informations too.<br><br>thanks<div><div></div><div class="h5">
<br><br><br><div class="gmail_quote">
On Sun, Oct 31, 2010 at 8:26 AM, Kevin O <span dir="ltr"><<a href="mailto:nowarninglabel@gmail.com" target="_blank">nowarninglabel@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left:1px solid rgb(204, 204, 204);margin:0pt 0pt 0pt 0.8ex;padding-left:1ex"><div>If you set up a cluster using ndbcluster tables then some modifications are necessary. Since we use such an architecture, I have written about it here: <a href="http://www.coderintherye.com/drupal-mysql-cluster-ndbcluster-high-availability" target="_blank">http://www.coderintherye.com/drupal-mysql-cluster-ndbcluster-high-availability</a></div>
<div><br></div><div>On that note, there are some issues in core a while back that could use some looking at relating to get ndbcluster support out of the box with Drupal (filed against 8.x): <a href="http://drupal.org/node/703916" target="_blank">http://drupal.org/node/703916</a> and <a href="http://drupal.org/node/391130" target="_blank">http://drupal.org/node/391130</a> </div>
<div><br></div><div>
Cheers,</div><br clear="all">Kevin O'Brien<div>Drupal Developer</div><div><a href="http://www.coderintherye.com" target="_blank">http://www.coderintherye.com</a></div><div>415-754-0112</div><br>
<br><br><div class="gmail_quote"><blockquote class="gmail_quote" style="border-left:1px solid rgb(204, 204, 204);margin:0pt 0pt 0pt 0.8ex;padding-left:1ex">
------------------------------<br>
<br>
Message: 2<br>
Date: Sat, 30 Oct 2010 18:17:00 -0600<br>
From: Cameron Eagans <<a href="mailto:cweagans@gmail.com" target="_blank">cweagans@gmail.com</a>><br>
Subject: Re: [development] Cluster with drupal ?<br>
To: <a href="mailto:development@drupal.org" target="_blank">development@drupal.org</a><br>
Message-ID:<br>
<<a href="mailto:AANLkTikHOpyUr_ps8B5Fy%2BBwRu8sPSecCWTYU42AHVLj@mail.gmail.com" target="_blank">AANLkTikHOpyUr_ps8B5Fy+BwRu8sPSecCWTYU42AHVLj@mail.gmail.com</a>><br>
Content-Type: text/plain; charset="iso-8859-1"<div><div></div><div><br>
<br>
I actually just set something like this up for a client. Master-master<br>
replication works well. The only thing we had problems with is making sure<br>
that uploaded files get replicated to all of the web servers. We ended up<br>
using Dropbox (I know - there's better solutions out there, but we wanted to<br>
put something together quickly).<br>
<br>
Future plans were to implement something like the Andrews File System to<br>
replace Dropbox.<br>
<br>
Thanks,<br>
Cameron<br>
<br>
<br>
<br>
On Sat, Oct 30, 2010 at 14:13, Justin Edwards <<a href="mailto:justin@telelanguage.com" target="_blank">justin@telelanguage.com</a>>wrote:<br>
<br>
> This doesn't seem like something Drupal would need to be modified for. Use<br>
> a master-master mysql installation, replicate the database, and use rsync to<br>
> keep your drupal front end files updated on all webservers.<br>
><br>
> Make sure all uploaded files are pointed at the right server, you could use<br>
> a reverse proxy to make sure it is going to the right location(s).<br>
><br>
><br>
> Justin Edwards<br>
> TeleLanguage Inc,<br>
> Network Administrator<br>
><br>
><br>
><br>
><br>
> On Sat, Oct 30, 2010 at 1:57 PM, Blake Senftner <<a href="mailto:bsenftner@earthlink.net" target="_blank">bsenftner@earthlink.net</a>>wrote:<br>
><br>
>> Take a look at the Services module, if you are not familiar with it.<br>
>> Allows one to expose APIs, which could be used for cluster node<br>
>> communications.<br>
>> I've made such a setup for a few clients, and am building one now at the<br>
>> RackSpace cloud that is planned to hook into their scaling API to<br>
>> dynamically scale.<br>
>><br>
>> Sincerely,<br>
>> -Blake<br>
>> <a href="http://www.BlakeSenftner.com" target="_blank">www.BlakeSenftner.com</a><br>
>><br>
>> On Oct 30, 2010, at 5:25 AM, Damian Adriel Perez Valdes wrote:<br>
>><br>
>> Hi:<br>
>><br>
>> Can I make a something like a cluster with Drupal ?<br>
>><br>
>> I need to install Drupal some servers, and that information of one drupal<br>
>> sync with a center server, and the others servers too.<br>
>><br>
>> Exits some module to do it ?<br>
>><br>
>> Thanks.<br>
>><br>
>><br>
>><br>
><br></div></div>
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</blockquote></div><br><br clear="all"><br></div></div>-- <br><b>Damián Adriel Pérez Valdés</b><br>Programador de Sistemas<br>URL Blog: <a href="http://damianadriel.blogspot.com/" target="_blank">http://damianadriel.blogspot.com/</a><br>
<br><img><br><br>- Soporte Técnico de PC (Hardware y Software).<br>- Desarrollo de Software.<br>- Diseño y Programacion de Sitios Web.<br><br>
</blockquote></div><br></div></div></div></div>