perfSONAR User Q&A and Other Discussion

[Raul Lopes <>]

Hi Szymon,

Thanks for the reply.

I had tried the troubleshooting and that's what made question the firewall. I see:

[root@ps01 PSREMOTE]# pscheduler troubleshoot

Performing basic troubleshooting of localhost.

localhost:

  Measuring MTU... 65535 (Local)

  Looking for pScheduler... OK.

  Checking clock... OK.

  Exercising API... Status... Tests... Tools... OK.

  Idle test.... 9 seconds.... Checking archiving... OK.

pScheduler appears to be functioning normally.

[root@ps01 PSREMOTE]# pscheduler troubleshoot --host ps01-ban ps03-ban

Performing basic troubleshooting of ps01-ban and ps03-ban.

ps01-ban:

  Measuring MTU... 65535 (Local)

  Looking for pScheduler... OK.

  Checking clock... OK.

  Exercising API... Status... Tests... Tools... OK.

  Idle test.... 9 seconds.... Checking archiving... OK.

ps03-ban:

  Measuring MTU... Unsafe or unknown: Error: Process took too long to run.

  Looking for pScheduler... Failed.

Connection timed out after 3001 milliseconds

As for the archiver, the latency tests are running, but weren't  getting published to MadDash.

I see in the logs in of the  perfsonar hosts that are configured:

[root@ps01 perfsonar]# tail -n 2 pscheduler.log

Feb 24 14:33:15 ps01 journal: archiver WARNING  115727: Failed to archive https://ps01-em1.rl.ac.uk/pscheduler/tasks/8b96154e-8287-4bda-abac-bde1578b8e8f/runs/60a7ea96-41e5

-4307-b7e8-a776dbe013c0 to esmond: Archiver permanently abandoned registering test after 1 attempt(s): 401: Authentication credentials were not provided.

Feb 24 14:33:15 ps01 journal: archiver WARNING  115727: Gave up archiving https://ps01-em1.rl.ac.uk/pscheduler/tasks/8b96154e-8287-4bda-abac-bde1578b8e8f/runs/60a7ea96-41e5

-4307-b7e8-a776dbe013c0 to esmond

Duncan Rand, who's doing the MadDash, has changed authentication and the first results

are showing.

I believe that the only doubt is firewall.

Raul

---

From: Szymon Trocha <>
Sent: 24 February 2020 13:25
To: Raul Lopes <>
Cc: <>
Subject: Re: [perfsonar-user] Problem with Persfonar firewall ports

 

Hi Raul,

W dniu 21.02.2020 o 16:35, Raul Lopes pisze:

Dear Perfsonar support,

I  work with Jisc/UK and we are configuring a network of Perfsonar hosts.

The were installed by the STFC/UK admins from the Perfsonar iso.

I have a few questions:

(0) firewall

Is this link correct for firewall configuration

Failed to post task: Error getting tools from ps03-ban: Connection timed out after 10001 milliseconds

http://docs.perfsonar.net/manage_security.html

And does the Perfsonar iso leave the firewall configured after installation?

Yes, it is automatically configured when using ISO installation and the ports in the table above are correct.

(1) Is this error a firewall error

Failed to post task: Error getting tools from ps03-ban: Connection timed out after 10001 milliseconds

This error message is an information that your pscheduler server was unable to get the list of supported tools from the other side.

What does the troubleshoot commands print on you src host:

pscheduler troubleshoot

pscheduler troubleshoot ps03-ban.your_remotehost_domain

pscheduler troubleshoot ps03-management.your_remotehost_domain

(2) the NICs correctly being used?

Each host has three IPs:

 - management

 - latency

 - bandwidth

when I run

 pscheduler task throughput  --source ps00-ban --dest ps99-ban

I see ps00 using the management port in ps99-ban.

Is that expected?

Can you post the whole result?

(3) archiver

In each host, there is failure try to contact the archiver through management port.

Is the archiver central or local to each host?

Again, is that expected?

(4) Error about credentials contacting the archiver

I also see in the logs an error about failed credentials contacting the archiver. WOuld it be firewall related?

Feb 20 19:54:09 ps01 journal: archiver WARNING  114317: Failed to archive https://ps01-em1.rl.ac.uk/pscheduler/tasks/8d4879e3-6794-4092-8cc3-19354c98ab9d/runs/f6573cf4-8f98-4448-83bb-107801573409 to esmond: Archiver permanently abandoned registering test after 1 attempt(s): 401: Authentication credentials were not provided.

How do you authenticate your hosts in central MA? Did you follow https://docs.perfsonar.net/multi_ma_install.html#authenticating-measurement-hosts

Regards,

--

Szymon Trocha
Poznań Supercomputing & Networking Center

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