[gpfsug-discuss] Pmsensors and gui

Tue Oct 9 15:56:14 BST 2018

Hello Simon,

the performance collector collects data from each node with the "hostname"
as in  /bin/hostname as key.
The GUI reaches out to all nodes and tries to map the GPFS node name to the
local hostname on that node.

If the hostname is set identical to be "hostname" on all nodes, the mapping
will not succeed,
So you will have to use unique hostnames on all cluster nodes.

Mit freundlichen Grüßen / Kind regards

Dr. Markus Rohwedder

Spectrum Scale GUI Development

 Phone:  +49 7034 6430190      IBM Deutschland Research &                          
                              Development                                          

 E-Mail: rohwedder at de.ibm.com  Am Weiher 24                                        

                               65451 Kelsterbach                                   

                               Germany                                             

From:	"Sobey, Richard A" <r.sobey at imperial.ac.uk>
To:	gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Date:	09.10.2018 16:00
Subject:	Re: [gpfsug-discuss] Pmsensors and gui
Sent by:	gpfsug-discuss-bounces at spectrumscale.org

I can help with the first one as I had the issue a few weeks ago. The
answer from support is below, verbatim.

---------------------------------------------------------------------------------------------------------------------------------------------

When trying to resolve the IP-Address in the JAVA code the first entry
entry in the list is returned.
Just localhost was expected for this. If the order is other way around and
the list starts with
localhost.localdomain, the GUI unfortunately cannot resolve the real node
name and will fail with
the message seen in the log files.
Thus I assume that this is the case for your customer.

it seems that our code it not as tolerant as it should be for the localhost
definitions in
the /etc/hosts file on the GUI node.
We need to change this in our code to handle accordingly.

Please let the customer adjust this entry and place localhost at the top of
the list.
After this the task should run successful and the state should be OK again
for the pm_collector.
---------------------------------------------------------------------------------------------------------------------------------------------

checking the GUI nodes /etc/hosts it shows actually

127.0.0.1   localhost.localdomain localhost4 localhost4.localdomain4
localhost

From: gpfsug-discuss-bounces at spectrumscale.org
<gpfsug-discuss-bounces at spectrumscale.org> On Behalf Of Simon Thompson
Sent: 09 October 2018 14:38
To: gpfsug-discuss at spectrumscale.org
Subject: [gpfsug-discuss] Pmsensors and gui

Hi,

I have a couple of a problems with the GUI and the stats data in there …

First, on the gui node, I am getting “The following GUI refresh task(s)
failed: PM_MONITOR”, looking at the log for this:

PM_MONITOR *      2018-10-09 14:35:31 15ms    failed RefreshTaskScheduler
$1.run           com.ibm.fscc.common.exceptions.FsccException: No entity
found for NODE: null/localhost.localdomain

Suggestions?

Second, a bunch of my hosts have multiple NICs on different networks, they
are joined to the cluster with the name hostname1-data, however the
“primary” hostname of the host is “hostname”. I see summary stats
information in the GUI which references the shortname of the host, but when
I click the host in the GUI, it claims no data – I assume because the GPFS
hostname is the -data nama and pmsensors is using the primary hostname.

Simon_______________________________________________
gpfsug-discuss mailing list
gpfsug-discuss at spectrumscale.org
http://gpfsug.org/mailman/listinfo/gpfsug-discuss

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