perfSONAR User Q&A and Other Discussion

[Xiao Wang <>]

Hello:

OWAMP Version is 4.2.0-1. it is a supermicro system with centos7 running.
Error observed from /var/log/messages:
powstream[18059]: OWPControlOpen([10.244.24.6]:861): Couldn't open 'control' 
connection to server: Connection timed out 

Note that I run the testpoint node in docker. I ran to this after a container 
restart. It used to run okay. 
Thanks,
Shawn
________________________________________
From: Antoine Delvaux <>
Sent: Friday, September 20, 2019 5:21 AM
To: Xiao Wang
Cc: perfsonar-user
Subject: Re: [perfsonar-user] owping: server denied test

Hello,

Can you confirm us which version of OWAMP you're running?  And also on which 
platform?

On the OWAMP server refusing the test, do you see any output from owampd in 
/var/log/perfsonar/owamp.log or /var/log/message (or /var/log/syslog if 
Debian) ?

Regards,

Antoine.

> Le 19 sept. 2019 à 15:32,  a écrit :
>
> Hello,
>
> I recently found one of our servers failed running owping tests against 
> other
> servers. It can ping other servers. Meanwhile, other servers can run owping
> against this owping-defaulty server. Noted all of them have the same
> configuration.
>
> The specific error showed below with the "server denied test". If I run 
> owping
> test from a to b I will get 100% packet loss. I read this post
> 'https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.internet2.edu_sympa_arc_perfsonar-2Duser_2014-2D08_msg00044.html&d=DwIFaQ&c=yHlS04HhBraes5BQ9ueu5zKhE7rtNXt_d012z2PA6ws&r=gNIJI15rGXZKlSPH4nUtQPw64sKGqtWDs1DI5_XU4hw&m=Egyj52MH2e-tvk6kcOGg-o0-znAH4RDTToO_CumgmnU&s=dRt7p1vU2U0T-KT6f_wiGIHA4rW0Z7XnflrjDcA2BiM&e='
> and tried to change the bandwidth from 20M to different values but had no
> luck. Feel free to drop any suggestions. Thanks!
>
> # owping 10.244.14.38
> owping: FILE=capi.c, LINE=881, Server denied test: 10.244.14.38
> owping: FILE=owping.c, LINE=235, Session Failed!
> # ping 10.244.14.38
> PING 10.244.14.38 (10.244.14.38) 56(84) bytes of data.
> 64 bytes from 10.244.14.38: icmp_seq=1 ttl=62 time=0.182 ms
> 64 bytes from 10.244.14.38: icmp_seq=2 ttl=62 time=0.338 ms
> 64 bytes from 10.244.14.38: icmp_seq=3 ttl=62 time=0.277 ms
> ^C
> --- 10.244.14.38 ping statistics ---
> 3 packets transmitted, 3 received, 0% packet loss, time 2037ms
> rtt min/avg/max/mdev = 0.182/0.265/0.338/0.066 ms
>
> Regards,
> Shawn Wang,
> Northwestern Univeristy
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