Hi Andy,
my understanding was that we agreed that the default is the xrootd-3
behavior. Since this private/public detection stuff is unreliable at
best, we act as it did not exists at all by default.
Cheers,
Lukasz
On 29.03.2014 02:48, Andrew Hanushevsky wrote:
> OK, we came up with a curious scenario. Wilko had his redirector on a
> host with only a public IP address while the data server was on a host
> with a private IP address. He used the default settings which currently
> is split routing. He connected to the redirector using a public IP
> address and was, obviously, told that the server that had the file was
> not reachable. Now, the problem is that at SLAC public and private
> addresses are all reachable both ways within the site because that's how
> the networking people set it up. So, he was rightfully confused. The
> solution for him was this awkward directive
>
> xrd.network routes local eth0,eth0
>
> So, two questions come up:
>
> 1) What should be the default setting? I am now tempted to say "local"
> because that's how the old xrootd acted. Nnever mind that sites with
> *actual* pulic/private network folks were just as confused; at least it
> would be consistent. So, should the default be "local"?
>
> 2) Since each machine had a single interface it doesn't make sense to
> require that you specify the interfaces (notice that you are explicitly
> saying that by repeating the same interface). So, the question is should
> it be required that the interfaces be specified and if so, when? The
> choices are:
>
> a) Make it optional and if you really have a dual homed machines you
> better specify it or it becomes unpredictable whether or not the machine
> will be reachable it the routes are not local.
>
> b) Make it optional only for 'routes local' since it's likely you are
> using single homed machines. If you have a dual homed machine you can
> specify that but if you don't it will still work in a predictable,
> though not ideal, way.
>
> I sort of favor (b) but it's a toss up.
>
> So what are your thoughts? Read all about it here:
>
> http://www.xrootd.org/doc/dev4/xrd_config.htm#_Toc380525648
>
> Andy
>
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