[Swift-devel] Re: InternalHostname in sites file

[Jonathan S Monette]

This problem seemed to have been fixed.  I just tried a run where I didn't
specify the internalhostname on PADS and it still ran.  I am not sure when
this was fixed.  I am using the swift-0.92 binaries I downloaded from the
website.

On Fri, Jun 3, 2011 at 2:22 PM, Jonathan S Monette <jonmon at utexas.edu>wrote:

> Ok.  I have one I wrote up based on what Mihael mentioned.  But should we
> just explain why someone would use the internalhostname key in sites.xml or
> should we also explain how to tell if you need to set this value and also
> here is how to find it?
>
>
> On Fri, Jun 3, 2011 at 1:11 PM, David Kelly <davidkelly999 at gmail.com>wrote:
>
>> Sure, Jon. The userguide is now kept in the docs/userguide directory of
>> Swift. It's in asciidoc format. Feel free to make changes there, or email me
>> the text and I can add it for you.
>>
>> David
>>
>>
>> On Thu, Jun 2, 2011 at 3:10 PM, Jonathan S Monette <jonmon at utexas.edu>wrote:
>>
>>> I can write something up and send it to David to add somewhere for the
>>> userguide.  Not sure where the files for the userguide are kept.
>>>
>>>
>>> On Thu, Jun 2, 2011 at 3:08 PM, Michael Wilde <wilde at mcs.anl.gov> wrote:
>>>
>>>> Thanks for clarifying. Jon and/or David, can you address this with a
>>>> cookbook entry on Coasters that heads towards a users guide section?
>>>>
>>>> We should tell users what they can run on their cluster (eg ping or
>>>> telnet-style connect tests) to validate the setting of internalHostName.
>>>>
>>>> - Mike
>>>>
>>>>
>>>>
>>>> ----- Original Message -----
>>>> > Right. If the head node has multiple network interfaces, only one of
>>>> > which is visible from the worker nodes.
>>>> >
>>>> > The choice of which interface is the one that worker nodes can connect
>>>> > to is a matter of the particular cluster. It's not particularly easy
>>>> > to
>>>> > have an automated mechanism that figures it out. We tried some scheme
>>>> > to
>>>> > pass all the interface addresses to the worker and let it try to
>>>> > connect
>>>> > to all of them in order, but that didn't work very well. Of course,
>>>> > there might be a scheme that works, but I didn't want to spend too
>>>> > much
>>>> > time on that.
>>>> >
>>>> > So that's why it's needed. To clarify to the workers which exact
>>>> > interface on the head node they are to try to connect to.
>>>> >
>>>> > Mihael
>>>> >
>>>> > On Thu, 2011-06-02 at 14:10 -0500, Jonathan S Monette wrote:
>>>> > > Mihael,
>>>> > >    I believe we have talked about this before but why is it
>>>> > >    necessary
>>>> > > for an InternalHostname to be specified for PADS? I know that the
>>>> > > address that coasters connects to is wrong but I do not remember why
>>>> > > that was. Could you give an explanation on why internalHostname
>>>> > > needs
>>>> > > to be set?
>>>> > >
>>>> > > --
>>>> > >
>>>> > >
>>>> > > Any intelligent fool can make things bigger and more complex... It
>>>> > > takes a touch of genius - and a lot of courage to move in the
>>>> > > opposite
>>>> > > direction.
>>>> > >
>>>> > > - Albert Einstein
>>>> > >
>>>> > >
>>>> > >
>>>> >
>>>> >
>>>> > _______________________________________________
>>>> > Swift-devel mailing list
>>>> > Swift-devel at ci.uchicago.edu
>>>> > http://mail.ci.uchicago.edu/mailman/listinfo/swift-devel
>>>>
>>>> --
>>>> Michael Wilde
>>>> Computation Institute, University of Chicago
>>>> Mathematics and Computer Science Division
>>>> Argonne National Laboratory
>>>>
>>>>
>>>
>>>
>>> --
>>>
>>> Any intelligent fool can make things bigger and more complex... It takes
>>> a touch of genius - and a lot of courage to move in the opposite direction.
>>>
>>> - Albert Einstein
>>>
>>>
>>> _______________________________________________
>>> Swift-devel mailing list
>>> Swift-devel at ci.uchicago.edu
>>> http://mail.ci.uchicago.edu/mailman/listinfo/swift-devel
>>>
>>>
>>
>
>
> --
>
> Any intelligent fool can make things bigger and more complex... It takes a
> touch of genius - and a lot of courage to move in the opposite direction.
>
> - Albert Einstein
>
>


-- 

Any intelligent fool can make things bigger and more complex... It takes a
touch of genius - and a lot of courage to move in the opposite direction.

- Albert Einstein
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