[X2go-dev] X2go-dev Digest, Vol 17, Issue 14

[brian mullan]

Loadbalancer's don't necessarily have to have anything to do with x2go or NX
for that matter although they can implement their own technique.

There are several good articles out there on the topic including this
one<http://1wt.eu/articles/2006_lb/>
.

Here is one implementation <http://haproxy.1wt.eu/> you could also use.

And here is a HowToForge article on setting up an Apache Web Server load
balancer<http://www.howtoforge.com/high_availability_loadbalanced_apache_cluster>

If you use some of the "cloud" services setting up a load balancer is often
very simple.

On the Amazon Web Services (AWS) Cloud (ec2) you just start your "instance"
that is the application(s) you want to use and more or less a single
click/command adds your new server to an EC2
loadbalance<http://aws.amazon.com/elasticloadbalancing/>r
that you then can specify criteria for.    AWS has made it ridiculously
simple.

Matter of fact, AWS EC2 just implemented a new "service" which can track
which instance (re virtual machine) a session belonged to and IF the session
terminates abnormally, you can restart it and between the Load Balancer and
AWS EC2 it will reattach it to the original instance/machine.    Read about
it hear on How to setup a Load Balancer with Sticky
Sessions<http://www.shlomoswidler.com/2010/04/elastic-load-balancing-with-sticky-sessions.html>.
Jeff Barr is the author and works for AWS.

Brian Mullan



On Mon, May 24, 2010 at 6:00 AM, <x2go-dev-request at lists.berlios.de> wrote:

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> Today's Topics:
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>   1. x2go servers with load balancing (michel)
>   2. Re: Does X2GO have support for scanning using     a       client-side
>      scanner? (rupi)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sun, 23 May 2010 13:59:12 +0200
> From: michel <kamerun at immerda.ch>
> To: x2go-dev at lists.berlios.de, kamerun at immerda.ch
> Subject: [X2go-dev] x2go servers with load balancing
> Message-ID: <4BF91890.5070800 at immerda.ch>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> hello,
>
> i use x2go with ubuntu and it works good, now i would like to install 2
> x2go lenny servers woth load-balancing. i don't use ldap, is it like
> this that we must just install 2 machines with the same configuration
> it means we have 2 dhcp server with the same ip or we must configure
> somewhere something to have load balancing? i try to find out in the
> documentation, but i did not found.
>
> michel
>
>
> ------------------------------
>
> Message: 2
> Date: Sun, 23 May 2010 15:31:34 +0200
> From: rupi <rupi at rantanplan.org>
> To: x2go-dev at lists.berlios.de
> Subject: Re: [X2go-dev] Does X2GO have support for scanning using       a
>        client-side scanner?
> Message-ID: <20100523133134.GE19269 at rantanplan.org>
> Content-Type: text/plain; charset="us-ascii"
>
> Hi,
>
> after a quick look in the saned documentation[1] i think setting up saned
> on the clients and usinging sane with the sane-net backend shouldn't be
> that
> hard (though it requires a trusted network environment because there is no
> authentication/authorization besides tcp wrapper support..). You may want
> to tweak the users environment to set SANE_NET_HOSTS to her/his client pc.
>
> Including tunneling support over ssh in x2go for saned is probably a tricky
> thing since sane uses a different tcp connection or control and data plus
> it resolves the port exclusivly over services.
>
> But saned on the clients should ease the process for your users.
>
> /rupi
>
> 1: http://www.sane-project.org/docs.html
>
> --
>  http://rantanplan.org/~rupi/ <http://rantanplan.org/%7Erupi/> || encrypt
> email || use free software
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