[gpfsug-discuss] pmcollector and NSD perf

Mark Bush Mark.Bush at siriuscom.com
Tue Dec 19 15:49:59 GMT 2017


It appears number 3 on your list is the case.  My nodes are all SAN connected and until I get separate CES nodes no NSD is necessary (currently run CES on the NSD servers – just for a test cluster).

Mark

From: gpfsug-discuss-bounces at spectrumscale.org [mailto:gpfsug-discuss-bounces at spectrumscale.org] On Behalf Of Markus Rohwedder
Sent: Tuesday, December 19, 2017 9:24 AM
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: Re: [gpfsug-discuss] pmcollector and NSD perf


Hello Mark,

the NSD sensor is GPFSNSDDisk.

Some things to check:

1. Is the sensor activated?
In a GPFS managed sensor config you should be able to see something like this when you call mmperfmon config show:

{
name = "GPFSNSDDisk"
period = 10
restrict = "nsdNodes"
},

2. Perfmon designation
The NSD server nodes should have the perfmon designation.


[root at cache-41 ~]# mmlscluster

GPFS cluster information
========================
GPFS cluster name: gpfsgui-cluster-4.localnet.com
GPFS cluster id: 10583479681538672379
GPFS UID domain: localnet.com
Remote shell command: /usr/bin/ssh
Remote file copy command: /usr/bin/scp
Repository type: CCR

Node Daemon node name IP address Admin node name Designation
------------------------------------------------------------------------------
1 cache-41.localnet.com 10.0.100.41 cache-41.localnet.com quorum-perfmon
2 cache-42.localnet.com 10.0.100.42 cache-42.localnet.com quorum-gateway-perfmon
3 cache-43.localnet.com 10.0.100.43 cache-43.localnet.com gateway-perfmon

3. Direct Disk writes?
One reason why there may be no data on your system is if you are not using the NSD protocol,
meaning the clients can directly write to disk as in a SAN environment.
In this case the sensor does not catch the transactions.

4. Cross cluster mount
Or maybe you are using a cross cluster mount.



Mit freundlichen Grüßen / Kind regards

Dr. Markus Rohwedder

Spectrum Scale GUI Development

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[Inactive hide details for Mark Bush ---12/19/2017 03:30:14 PM---I've noticed this in my test cluster both in 4.2.3.4 and 5.0.0.]Mark Bush ---12/19/2017 03:30:14 PM---I've noticed this in my test cluster both in 4.2.3.4 and 5.0.0.0 that in the GUI on the monitoring s

From: Mark Bush <Mark.Bush at siriuscom.com<mailto:Mark.Bush at siriuscom.com>>
To: "gpfsug-discuss at spectrumscale.org<mailto:gpfsug-discuss at spectrumscale.org>" <gpfsug-discuss at spectrumscale.org<mailto:gpfsug-discuss at spectrumscale.org>>
Date: 12/19/2017 03:30 PM
Subject: [gpfsug-discuss] pmcollector and NSD perf
Sent by: gpfsug-discuss-bounces at spectrumscale.org<mailto:gpfsug-discuss-bounces at spectrumscale.org>

________________________________



I’ve noticed this in my test cluster both in 4.2.3.4 and 5.0.0.0 that in the GUI on the monitoring screen with the default view the NSD Server Throughput graph shows “Performance Collector did not return any data”. I’ve seen that in other items (SMB before for example) but never for NSD. Is there something that must be enabled in the zimon sensor or collector config file to grab this or is this a bug?


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