Discussion:
[Oscar-devel] Network change of the CREST SVN/trac server (tiger)
Kim, DongInn
2014-04-10 15:33:38 UTC
Permalink
Dear All,

The IP transitions are done and it seems that everything works as usual.
There were some outages on svn.crest.iu.edu and git.open-mpi.org for a while because the firewall guys missed to open the ports (80 and 443) for these hostnames.
They were open at about 10:10 am (E.T.)
I should’ve checked all the ports before taking the action today. I am sorry for the unexpected outage.

Please let me know if you find any issues after the IP transition.

Regards,

--
- DongInn
Dear All,
The CREST SVN/trac server machine (tiger.crest.iu.edu) is requested to change its subnet and I am planning to switch its IP address for the change of the subnet.
I would like to setup the schedule to update the DNS information of the following hostnames in tiger.
- svn.crest.iu.edu
- svn.mpi-forum.org
- svn.open-mpi.org
- svn.osl.iu.edu
- svn.oscar.openclustergroup.org
- svn.scalabletools.org
- git.open-mpi.org
April 10, 2014
6:00am-7:00am Pacific US time
7:00am-8:00am Mountain US time
8:00am-9:00am Central US time
9:00am-10:00am Eastern US time
1:00pm-2:00pm GMT
https://svn.crest.iu.edu/svn/*
https://svn.open-mpi.org/svn/ompi
https://svn.mpi-forum.org/svn/mpi-forum-web/
https://svn.open-mpi.org/trac/ompi
https://git.open-mpi.org/trac/hwloc
...
tiger.crest.iu.edu (129.79.13.91 --> 129.79.39.209)
* svn.crest.iu.edu IU CS
tiger-virt1.crest.iu.edu (129.79.13.23 --> 129.79.39.200)
* svn.mpi-forum.org University of Illionis
tiger-virt2.crest.iu.edu (129.79.13.24 --> 129.79.39.201)
* svn.open-mpi.org IU CS
tiger-virt3.crest.iu.edu (129.79.13.7 --> 129.79.39.205)
* svn.osl.iu.edu IU CS
tiger-virt4.crest.iu.edu (129.79.13.9 --> 129.79.39.207)
* svn.oscar.openclustergroup.org IU CS
tiger-virt5.crest.iu.edu (129.79.13.13 --> 129.79.39.199)
* svn.scalabletools.org IU CS (?)
tiger-virt6.crest.iu.edu (129.79.13.10 --> 129.79.39.198)
* git.open-mpi.org IU CS
I have already prepared the IP transition on tiger to make the new IP addresses provide the same services on tiger so that I hope that there is no actual outage of the services other than the rebooting time.
If you happened to use the IP address on your cronjob or programs, please make sure that you switch it with the new one.
IMPORTANT
=========================================
tiger will need to reboot to kick in a new kernel and mount the NFS space with the new IP addresses at the same time.
==========================================
Please let me know if you have any questions or concerns about this IP transition.
Regards,
--
- DongInn
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