perfSONAR User Q&A and Other Discussion

[Shawn McKee <>]

Hi Winnie,

As long are you are changing just the IP (and keeping the FQDN the same) you should just have to re-address the box as you noted in the "OS POV".

The /opt/perfsonar_ps/regular_testing/etc/regular_testing.conf will contain the IP address but as long as you are using the mesh configuration, the next time the generate_configuration runs after you make the DNS change, it should write the "new" IP into place.

The perfSONAR nodes store measurement results by IP address.  After you change the IP address, you will be unable to see the OLD measurements when you use the FQDN.  You could still find them by specifying the IP though.

Thanks to Andy Lake for providing the details above.  

Let me know if you have further questions or hit problems in making this IP change.

Shawn

On Fri, Jul 24, 2015 at 8:01 AM, Winnie Lacesso <> wrote:

Happy Friday!

For various infrastructural reasons, our Bw & Lat Perfsonar boxen have to
change subnet.

I've changed IP of boxen many times so know (I believe) what needs doing
from an OS POV.

For PerfSonar, they are also listed in GOC-DB so that would need to
change.

Is there anywhere other than GOC-DB, from PerfSonar POV, where their IP
address might be embedded & need changing?
Their FQDN in this case won't change - just IP (v4) address.
(We don't yet do IPv6)

Very Grateful for advice!

Winnie Lacesso / Bristol University Particle Physics Computing Systems
HH Wills Physics Laboratory, Tyndall Avenue, Bristol, BS8 1TL, UK