Hi,

This is possible with xrootd redirect (http://www.xrootd.org/doc/dev48/xrd_config.htm#_Toc496911346). In this case, you don¹t need a redirector for server A and B. Users always access A, and will be (transparently) referred to B if A doesn¹t have the file.

A and B can, by themselves be redirectors of xrootd clusters.

regards,
--
Wei Yang  |  [log in to unmask]  |  650-926-3338(O)








-----Original Message-----
From: <[log in to unmask]> on behalf of Yujun Wu <[log in to unmask]>
Date: Tuesday, March 27, 2018 at 6:31 PM
To: xrootd-l <[log in to unmask]>
Subject: Help with a xrootd redirector configuration question

>Hello,
>
>
>Could somebody help me with a configuration question? I have two xrootd data servers:
>
>
>Server A: no authorization needed. Anybody on site can access the data (readonly);
>Server B: GSI authentication/authorization needed.
>
>
>If I want to put a xrootd redirector in front of the two data servers, is it possible for the redirector to redirect user requests to Server A first and only to Server B if the files are not available in Server A? All
> the data access are readonly, no writing.
>
>
>Thanks in advance for any advice on this.
>
>
>
>
>Regards,
>Yujun
>
>
>________________________________________
>Use REPLY-ALL to reply to list
>To unsubscribe from the XROOTD-L list, click the following link:
>https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1