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XROOTD-L  June 2013

XROOTD-L June 2013

Subject:

Re: proxy setup for xroot

From:

Victor Kotlyar <[log in to unmask]>

Reply-To:

Support use of xrootd by HEP experiments <[log in to unmask]>

Date:

Thu, 27 Jun 2013 09:10:03 +0400

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (69 lines)

Hi Wei

on 26.06.2013 23:18, Yang, Wei wrote:
> Hi Victor,
>
> Try to understand your question: is this about something like root_proxy variable? Since you have done a proxy setup so I suppose your question is not about if and how for setting up a proxy. I don't think we currently have this. But I think you can request such a feature to be implemented. In the mean time, I am doing similar things at SLAC by manipulating the NAT table in iptables (modify TCP head so that traffic to host A is sent to host B, etc.)

Yes it is like a root_proxy variable.
I do not know if it will be widely used but maybe idea is interesting.
When everybody and everywhere in HEP switched to  root it might be useful.


In our case:
we have WN's after GW (NAT) in our network and a server outside our 
network. We would like to reroute all xroot\root traffic to our WNs GW 
through that particular server.

If you have similar setup could you please describe it a little bit.

Best regards,
Victor Kotlyar

>
> regards,
> Wei Yang  |  [log in to unmask]  |  1-650-926-3338
>
>
>
>
> On Jun 26, 2013, at 11:43 AM, Victor Kotlyar<[log in to unmask]>  wrote:
>
>> Dear xrootd experts.
>>
>> Since 6th of June we have problems with connection to outside Russia for
>> our institute.
>> We investigate any possibility to use another Institutes for rerouting
>> our Grid traffic.
>>
>> So I have a very simple question: is it possible to create a proxy
>> server for xroot?
>>
>> For example we use http_proxy environment variable to redirect all http
>> traffic through http proxy server on WorkingNodes.
>>
>> On our Grid site Alice experiment  initiates many connections on 1095tcp
>> port to outside storage servers and it would be very usefull just to set
>> xroot_proxy environment variable and install xrootd in proxy mode on
>> other site.
>>
>> I guess that it is not so simple. Could you please make any
>> recomendations what is possible to try in our case?
>>
>> Many thanks
>> Best regards,
>> Victor Kotlyar
>>
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