Nagios Graph converting figures to binary bytes rather than decimal

[James Osbourn]

Hi Claudio,

I have entered the map entry below based on your example and I am still seeing the results on the graph show as a decimal version of the Bytes value.

/perfdata:(.*)=(\d+)MB;(\d+);(\d+);(\d+);(\d+)/
and push @s, [$1,
        ['data', GAUGE, $2*1024*1024 ],
        ['warn', GAUGE, $3*1024*1024 ],
        ['crit', GAUGE, $4*1024*1024 ],
        ['min', GAUGE, $5*1024*1024 ],
        ['max', GAUGE, $6*1024*1024 ] ];

[cid:image001.png at 01CDDC69.3ED5FAE0]

Is there something after the map has been processed that takes that value and produces the graphs where the calculation is going wrong?

This is a really annoying issue that I would like to resolve if I can.

Cheers

James

From: James Osbourn
Sent: 15 December 2012 16:16
To: Nagios Users List
Subject: RE: [Nagios-users] Nagios Graph converting figures to binary bytes rather than decimal

Hi Claudio,

Thanks for the feedback.  Just to make sure, where abouts in the map file should these lines go?

Thanks

James

From: Claudio Kuenzler [mailto:ck at claudiokuenzler.com]
Sent: 15 December 2012 15:59
To: Nagios Users List
Subject: Re: [Nagios-users] Nagios Graph converting figures to binary bytes rather than decimal

Hi James,

Looking at the GB value and converting to bytes and then back to GB using decimal bytes gives these figures.

Is there any way to make nagiosgraph using binary bytes rather than decimal.  I am not that familiar with nagiosgraph or RRD and cannot work out how to make the change.

You will have to manually add an entry into the 'map' file to tell nagiosgraph to use different values.

My system (df -h) shows:
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg0-root   20G  5.4G   14G  29% /

Nagiosgraph shows:
total: 20.32G
used: 5.45G

You can use the following map entry:

# Service Type: check_disk
# Nagiosgraph regex by Claudio Kuenzler
# Check: /usr/lib/nagios/plugins/check_disk -w 20% -c 10% -p /
# Output: DISK OK - free space: / 235120 MB (66% inode=95%):
# Perfdata: /=119211MB;298635;335964;0;373294
/perfdata:(.*)=(\d+)MB;(\d+);(\d+);(\d+);(\d+).*/
#/perfdata:(\W)=(\d+)MB;(\d+);(\d+);(\d+);(\d+).*/ # only / partition
and push @s, [diskusage,
        ['used', GAUGE, $2*1000**2 ],
        ['total', GAUGE, $6*1000**2 ] ];
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