[auton-users] NOTICE: Lab Downtime Monday Dec 28.

[Michael J. Baysek]

Daniel, (and CC to list in case others had same questions)


1) Neill* machine availability

Yes. All servers including neill* machines will be down during this 
time.  The very core of the entire infrastructure is being refactored.  
Neill* machines do rely on some Auton infrastructure, such as routing 
and networking so all machines are affected.


2) BigPapa going away

The intention is to get completely away from using /mnt/BigPapa mount 
point at all. 


I anticipated that scripts would be referencing it directly.  I 
considered the use of symlinks, but that will only serve foster it's 
survival, so at this point I am against it. 


Users could fix the scripts themselves, but instead, I plan to create a 
script to crawl the file space for scripts referencing BigPapa and fix 
them to point to the new locations.  Nobody should have to do anything 
once this script is run unless they have BigPapa hardcoded into C code.


As far as the mount point change, all Auton resources will be mounted 
from /auton from now on.  Documentation is upcoming on this change, and 
will be released before the outage begins. 


Specific to you and your students, I wasn't planning on making any 
changes to the neill-fs mountpoints at this time. 



Mike




Daniel B. Neill wrote:
> Hi Mike, could you please clarify the following:
>
> 1) Will the neill1-neill4 servers be going down as well?
>
> 2) After the downtime, how can we access data that was previously 
> available in the /mnt/BigPapa directory?  (Can we keep a symbolic link 
> around so that we don't have to change all our scripts?)
>
> Thanks!
> Daniel
>
>
> On Wed, 23 Dec 2009, Michael J. Baysek wrote:
>
>> Hi Lab.
>>
>>
>> Please read this email in its entirety.  If you have any questions or 
>> concerns, you need to let me know as soon as possible.
>>
>>
>> All Auton Lab systems will be offline on Monday Dec 28 beginning at 
>> 8:00 AM. This includes web servers, file servers, TCube Web Interface 
>> instances, CVS, Subversion, VPN, and Linux desktops, and pretty much 
>> everything else I haven't mentioned.  I expect that by 5:00 PM, most 
>> services will again be available.
>> When the system comes back up, we will have a new fileserver.  The 
>> mount points for home and data directories will be changing.  BigPapa 
>> will be going away.  If you currently access "/mnt/BigPapa" from a 
>> Linux box named gs*.sp.cs.cmu.edu, you will need to email me and 
>> request the new mount points be setup correctly on your machine.  If 
>> you are using a machine in the .auton.cs.cmu.edu or .autonlab.org 
>> domains, I will make all necessary changes for you.
>>
>>
>> Additionally, the internal IP addressing scheme will be changing.  
>> For years, we have used 192.168.1.x as our internal IP range.  This 
>> has limited our ability to work offsite over VPN in a number of ways 
>> since most home routers use this address range.  This longstanding 
>> issue will also be resolved during the downtime.
>>
>>
>> OUTAGE:  Monday December 28
>> WHEN:    8:00 AM to 5:00 PM (for critical services)
>>
>>
>> Mike
>>
>>
>> P.S.  I recommend if you need to keep working during the outage, to 
>> copy whatever you are working on locally and work on it that way.  
>> Keep in mind, you won't be able to log into any BigPapa connected 
>> desktops at all, so don't copy it there!
>>
>>
>>
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>>
>>
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>