perfSONAR User Q&A and Other Discussion

[Shawn McKee <>]

Thanks Tim,

I thought I would chime in with what I did earlier this week:

systemctl stop nscd

systemctl disable ncsd

yum install systemd-resolved

systemctl enable  systemd-resolved

systemctl start systemd-resolved

(Works on EL7 and EL9 (assuming yum is aliased to dnf))

Shawn

On Wed, Nov 29, 2023 at 2:28 PM Tim Chown <> wrote:

Hi,

We’ve encountered IPv6 test failures recently and discussed with the devs.  One cause appears to be cache behaviour issues with nscd, so a first step would be to disable that, and if you want cacheing then installed systemd/resolved.  If your test below is to an IPv6 literal address rather than host name, that of course would not use DNS.

It seems likely that a future version of perfSONAR will do both.

Tim

On 29 Nov 2023, at 01:42, Weed, Adam <> wrote:

You don't often get email from . Learn why this is important

I have IPv4 and IPv6 latencybg tests running from a psconfig template file. The difference between the two is "ip-version" : 4 and "ip-version": 6. The tests happen between the members of a mesh.

I can bring up the pscheduler monitor and see all of my tests running. The IPv4 tests work fine; the IPv6 tests never make it to Finished status.

I can retrieve the task link from the schedule, then when the task completes, check "pscheduler result [task_link]" and I get the response:

Run failed.

Error:

  No result was produced.

I have no errors in any of my log files. The limits are correct ("Application PASSES"). I can do a quick "pscheduler task latencybg --dest [IPv6 address]" from any of the systems I'm running to any of the other members in the mesh, and I can see runs complete in the monitor, with "pscheduler result" for the task link showing the results of the runs that have completed.

I don't know how many configuration adjustments I've made to try to get this to work, without success. Currently I've split up the hosts into two groups, removing host names from the addresses and just using IP addresses. Still, the IPv4 tests work fine and the IPv6 tests never finish.

Given that a manually-typed task works fine, and the template does not, I would assume a configuration issue somewhere. What's the best way to troubleshoot this? I'm out of ideas.

Adam Weed
Database Programmer/Analyst

University of Missouri System - MOREnet

  |  (573) 884-2562

--
To unsubscribe from this list: https://lists.internet2.edu/sympa/signoff/perfsonar-user

--
To unsubscribe from this list: https://lists.internet2.edu/sympa/signoff/perfsonar-user