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Questions tagged [mrtg]

The Multi Router Traffic Grapher, or just simply MRTG, is free software for monitoring and measuring the traffic load on network links.

The Multi Router Traffic Grapher, or just simply MRTG, is free software for monitoring and measuring the traffic load on network links. It allows the user to see traffic load on a network over time in graphical form.

It was originally developed by Tobias Oetiker and Dave Rand to monitor router traffic, but has developed into a tool that can create graphs and statistics for almost anything.

MRTG is written in Perl and can run on Windows, Linux, Unix, Mac OS and NetWare.

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Mrtg graph not display for some devices

I have MRTG get data from multiple devices, but 4 of them populate graphs on MRTG but other devices show empty graph, Could you please help me how to troubleshot this issue
Phil
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mrtg show average when counter data missing

I'm graphing my power meter with an old laptop in my barn. This sends data using mqtt to mrtg(cacti) Lately this laptop has begun to lockup when playing spotify. This is a separate issue. However, when I reboot, all the power used in the mean time…
Leif Neland
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why mrtg showing 100 percent CPU load

I have configured MRTG to monitor network traffic, CPU load and memory. Network traffic statistics are ok but CPU load statistics show that CPU is 100% used while actually it is as I check with top command. Following is the MRTG configuration for…
Hafiz Muhammad Shafiq
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How to create specific graph with MRTG

I have just set up MRTG server. Now It can get SNMP info from our router.in the first we create config file by using cfgmaker, everything is ok. We can get graph well. We have edit something on our config file about maxbytes or something like that.…
Dương Quang Thọ
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How to get max in and max out values from rrd files in single rrd command

We have MRTG set up to monitor the network .So for that we are using RRD tool to fetch an plotting the graph data. Now i have created a script which actually fetch data from RRD files , so from fetched data i need max in and and max out in 24 Hours.…
Vish
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MRTG installation on centos 7

I have to monitor traffic on my system. CentOS 7 is installated on system. For that I have found mrtg tool that gives a visual display of traffic also. I have search a lot but could not found guide for CentOS 7 version. Can anyone guide me its all…
Hafiz Muhammad Shafiq
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MRTG: rrdtool xport - Problems with exporting in/out traffic

I want to monitor + export in/out traffic data to XML with MRTG and rrdtool xport. I have several problems: The exported XML has the same timestamp for start and end in the meta section. I specified --start 1429862400 --end 1429894800, the output…
Simon Lischka
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Update MRTG year graph

I have migrated my old 2.16 MRTG environment in a RHEL 6 machine to the new 2.17.4 a while ago and I keep having the same problem, my day, week and month graphs are updated as they should be with crontab but the year graph is not. When I first…
Javier Suárez
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Monitor Bandwidth on Apache Individual Virtual Websites (MRTG?)

How do I monitor bandwidth usage of individual virtual sites on Apache? (Ubuntu 14). On our IIS server, we use the performance monitor, save to csv file and have MRTG parse the data and display it as graphs. Can I do this with MRTG? I read of an…
Keith Sorbo
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Using LWP::UserAgent to retrieve MRTG Graph in Perl

I am trying to retrieve an MRTG graph using Perl in Linux environment . #!/usr/bin/perl use strict; use warnings; use LWP::UserAgent; use Data::Dumper; my $ua = LWP::UserAgent->new; $ua->timeout(10); my $response =…
Newbie
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explain me a difference of how MRTG measures incoming data

Everyone knows that MRTG needs at least one value to be passed on it's input. In per-target options MRTG has 'gauge', 'absolute' and default (with no options) behavior of 'what to do with incoming data'. Or, how to count it. Lets look at the…
remort
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How to subtract a one interface from another in MRTG config

I have setup MRTG for my router and I have create new target by adding all network interfaces together (lets call it Total_traffic). I'm trying to create a new target which give total traffic expect one network interface. To do this can I subtract…
Yasiru G
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MRTG ThreshPro is only one time. Not runs every 5 minute

I have setup MRTG-rrdtools-routers2.cgi and setup working fine and happy as a beginner :) I have set 'ThreshDir:', 'ThreshMinI' and 'ThreshProgI' in MRTG cfgs. At the first run my script in 'ThreshProgI' is run without any issue but it not going to…
Yasiru G
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bandwidth monitoring with MRTG, no dat from switch stacks

I'm trying to set up a monitoring system and have been asked to add all of our uplinks in it. most of our switches consists of stacks of about 7 switches. These stacks aren't returning any data. I run MRTG on the single switches and get back nice…
user2477981
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MRTG ThreshProgI/O stopped working after start using rrdtool

I was using MRTG system and it was log usage data to .log files. I was use 'ThreshProgI' to get threshold alerts and it was working fine. I changed the usage logging format to rrdtool and now my system is logging all usage to .rrd files without any…
Yasiru G
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