Nfs-server

svennd · 7 April 2017 10:07

I’m kinda stuck. I created a script that can read out cat /proc/net/rpc/nfsd
For some reason when I leave he script do the normal polling, it generates a rrd file “A.rrd” and this includes the data that is supposed to be under app-nfs-default-$app_id.rrd If I run
./poller.php -f -m in -h HOSTNAME -d the correct rrd files are made. (which are app-nfs-[default,proc2,proc3,proc4])

github.com

svennd/librenms/blob/7b2857765725136fd941a81ca8ac12a24b5a7aff/includes/polling/applications/nfs-server.inc.php

<?php

use LibreNMS\RRD\RrdDefinition;

$name = 'nfs-server';
$oid = '.1.3.6.1.4.1.8072.1.3.2.3.1.2.10.110.102.115.45.115.101.114.118.101.114';

echo ' ' . $name;

$nfsstats = snmp_walk($device, $oid, '-Oqv', 'NET-SNMP-EXTEND-MIB');

update_application($app, $nfsstats);

$app_id = $app['app_id'];

// nfs description
$rrd_name['default'] = array('app', 'nfs-default', $app_id);
$rrd_name['proc2'] = array('app', 'nfs-proc2', $app_id);
$rrd_name['proc3'] = array('app', 'nfs-proc3', $app_id);
$rrd_name['proc4'] = array('app', 'nfs-proc4', $app_id);

This file has been truncated. show original

here is the poller log : (including print_r)
https://pastebin.com/i2jyq3Cf

Anyone has a clue ?

murrant · 12 April 2017 19:31

You can only generate one rrd file with each data_update() call.

So you must call data_update() four times in your example, setting rrd_name, rrd_def, and fields properly for each one.

Also, data_update() needs to be called exactly once for each RRD with complete data.

murrant · 12 April 2017 19:39

By the way thanks for looking into this. I think you are heading in the right direction.

svennd · 13 April 2017 08:47

I do call a data_update() for these value’s :

proc2
proc3
proc4
proc4ops
default (these include NFS value’s that are for every version of NFS)

So I should be seeing 5 (maximal) files with these names device/app-$value-$app_id.rrd
instead I see 1 file device/A.rrd that is “default” rrd layout. So while my code does the wrong call for some reason its downstream of my code something failes and returns a faulty name.

This however is only when normal polling happens if I execute :
./poller.php -r -f -m applications -h device -d
Then it shows the good names for create …

Thanks for looking, I checked again today, but I must trigger some deep bug or mistake that is not easy to spot, as I really looked to the other applications and they do similar stuff.