[SAC] Subversion vhost migration underway

Sun Mar 4 02:01:54 EST 2007

The other thing we could do is have /svn/fdo use the old  
configuration and /fdo use the new configuration (rather than having  
the new configuration/vhost answer both /svn/fdo *and* /fdo).  This  
would mean that people could use the wildcard stuff for their  
switchover to the new canonical URL.  We can do this on a per- 
repository basis, so we could limit it to the fdo* and mapguide  
repositories, which seem to be depending on wildcard.

I have taken liberty to try this out with the FDO repository and it  
seems to work (let me know if I need to switch it back).  I don't  
want to cause the pain and misery of manually merging for lots of  
folks, so which ever way is going to lessen that is the approach I  
think we should take.  If this sounds good, I will flip the fdo* and  
mapguide repos to behave this way until 5 pm monday.  After that  
point, I will have the vhost answer both /svn/fdo and /fdo, and  
*those* people can then do their svn switch --relocate. (or checkout  
fresh if it isn't too much of a hardship, there's always that option).

Whaddya think?

Howard

On Mar 4, 2007, at 12:48 AM, Jason Birch wrote:

> Well, that sucks (see below)
>
> I think that for the FDO project, the SVN used in their checkout  
> script was:
>
> https://osgeo.org/svn/fdo <https://osgeo.org/svn/fdo> *
>
> I'm not sure how many folks are affected, but it's probably a lot.
>
> Bob?  Greg?  Can we live with breaking the  
> non-"svn.osgeo.org" (wildcard) access, and having any users stuck  
> with this URL manually merge their changes into a fresh checkout  
> from the new location?
>
> Howard, is it an option to leave the /svn/ alias on the  
> svn.osgeo.org site broken (and inaccessible) until end of Monday  
> (meaning that those folks can't check in changes or switch to the  
> new location) and then break the wildcard access at that time, re- 
> enabling the /svn/ alias?  I guess we've got GDAL and MapBender to  
> consider here too...
>
> We may want to think about what caused this problem in the first  
> place.  I have a feeling it was because of the chaos of the initial  
> changeover.  Does SAC need to put a notification procedure in place  
> for projects using the OSGeo infrastructure, or should a post to  
> the SAC mailing list be enough, with a requirement that projects  
> monitor that list?
>
> As an aside, I HATE wildcard DNS, as it leads to this kind of  
> situation, and I will be extremely glad when it's gone.
>
> Jason
>
> ________________________________
>
> From: sac-bounces at lists.osgeo.org on behalf of Howard Butler
> Sent: Sat 2007-03-03 9:52 PM
> To: System Administration Committee Discussion/OSGeo
> Subject: Re: [SAC] Subversion vhost migration underway
>
>
>
> Jason,
>
> If I switch on the old configuration to support the wildcard, it then
> breaks http://svn.osgeo.org/svn/mapguide or http://svn.osgeo.org/ 
> svn/fdo
>
> I'm at a loss as to what to do because we're screwed both ways...
> support the wildcard and break for the people using the old canonical
> URL or don't support the wildcard and break for the people who were
> using any old URL.  My guess is that subversion sees absolute paths
> regardless of the vhost, so /svn/fdo is the same repository on both
> vhosts (they are configured differently).
>
> I propose that we break the support for wildcard svn.  How many folks
> do we imagine this issue might affect?
>
> Input requested...
>
> Howard
>
> On Mar 3, 2007, at 2:31 PM, Jason Birch wrote:
>
>> Hi all,
>>
>> If you are currently using a host other than svn.osgeo.org, please
>> make sure that you update your local repository to point to the new
>> location by 5pm CST, Monday.
>>
>> For instance, if you are using https://osgeo.org/svn/fdo <https://
>> osgeo.org/svn/fdo>  (or mapguide), use the following command:
>>
>> svn switch --relocate https://osgeo.org/svn/fdo <https://osgeo.org/
>> svn/fdo>  <http:///> http:// <http:///>  <http://svn.osgeo.org/fdo>
>> svn.osgeo.org/fdo
>>
>>
>> (all on one line)
>>
>> This change is necessary so that we can move away from wildcard
>> DNS, which is causing considerable problems in managing the
>> website, and to allow for future separate of SVN and WWW services
>> onto different servers.  If you require extended time to make this
>> change, please let the SAC mailing list know by email as soon as
>> possible.
>>
>> If you are pointing to the svn.osgeo.org host but including /svn/
>> at the beginning of your path, you do not have to change
>> immediately, but you are still encouraged to update to the new
>> canonical URI as soon as possible.  e.g.:
>>
>> svn switch --relocate https://svn.osgeo.org/svn/fdo <https://
>> svn.osgeo.org/svn/fdo>  https://svn.osgeo.org/fdo <https://
>> svn.osgeo.org/fdo>
>>
>> Jason
>>
>> ________________________________
>>
>> From: sac-bounces at lists.osgeo.org on behalf of Howard Butler
>> Sent: Sat 2007-03-03 6:36 AM
>> To: System Administration Committee Discussion/OSGeo
>> Subject: Re: [SAC] Subversion vhost migration underway
>>
>>
>>
>> I have turned it on long enough for users to do a svn switch.  I
>> propose that we switch it off Monday at 5 pm CST.  I think it would
>> be pretty important that they don't *commit* anything to the old URL,
>> and only commit to the new URL after they issue the switch.  The svn
>> switch --relocate command below should work fine with the appropriate
>> substitutions for their URLs.
>>
>> Howard
>>
>> On Mar 3, 2007, at 1:49 AM, Jason Birch wrote:
>>
>>> Howard,
>>>
>>> Several users were/are taking advantage of the wildcard DNS to
>>> reference the repositories with paths like:
>>>
>>> https://osgeo.org/svn/fdo <https://osgeo.org/svn/fdo>
>>>
>>> Is there any way to re-enable that path on the www vhost until
>>> these users get switched over?  I misunderstood the impact of the
>>> changes and indicated in my note that these aliases would continue
>>> to work until the wildcard DNS was pulled.
>>>
>>> Jason
>>>
>>>
>>> ________________________________
>>>
>>> From: sac-bounces at lists.osgeo.org on behalf of Howard Butler
>>> Sent: Fri 2007-03-02 8:20 PM
>>> To: System Administration Committee Discussion/OSGeo
>>> Subject: [SAC] Subversion vhost migration underway
>>>
>>>
>>>
>>> Folks,
>>>
>>> I have flipped the switch on the DNS, and the subversion virtual  
>>> host
>>> migration is underway.  The TTL was set to 6 hours a couple of days
>>> ago (after being turned down to 1 day more than a week ago), so the
>>> new DNS should propagate fairly quickly.  After some time for DNS to
>>> propagate, we'll flip the switch back on for the repositories.
>>>
>>> Note that it is expected that both http://svn.osgeo.org/gdal and
>>> http://svn.osgeo.org/svn/gdal will continue to work as repository
>>> URLs, but the shorter one is the preferred one.  At some indefinite
>>> point in the future, we will quit answering to /svn/gdal.
>>>
>>> After the repositories are back up, at your leisure you may do:
>>>
>>> svn switch --relocate http://svn.osgeo.org/svn/gdal http://  
>>> <http:///>
>>> <http:///>  <http:///>
>>> svn.osgeo.org/gdal
>>>
>>> and all should be well.
>>>
>>> Howard
>>> _______________________________________________
>>> Sac mailing list
>>> Sac at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/sac
>>>
>>>
>>> <winmail.dat>
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>>> Sac mailing list
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>>
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