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Questions tagged [graph]

107 questions
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why a network's graph connectivity (k-connectivity) is not a good way to judge reliability?

I was told that a network's graph connectivity is a "dangerous" way to judge reliability. Why is that? In my mind, a complete graph (the most connected graph) is the most reliable network possible. For those who dosen't know what I mean by "graph…
user57366
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nagios & nagiosgrapher & check_disk -A

I check most Host(group)s with check_disk -A .... Because of the fact that i have many machines with many different mounted filesystem, i do not want to make extra checks for every mounted drive. Now with nagiosgrapher i thought, i have a section…
m.sr
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Plotting 2 distinct y-axis using rrdtool

I would like to create a graph with 2 different data sources for y-axis. For example, I would like to measure averages of some population on the left Y-axis, and I have another data source which contains how many errors there are in the…
Rasmus
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Is there a better way to analyze Varnish hit rate

I currently analyze varnish hit rate like this While this is good, a major part of the request the server services is non-cacheable. This brings down the hit rate drastically. How can I modify this such that I count only requests that are…
Quintin Par
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Using multiple instances of rrdcached on a single server?

I'm trying to figure out the best way to use rrdcached on a single server for multiple graphing tools. Currently I'm using cacti, observium and collectd on the same server (running CentOS 6.7) that all use rrdtool to create graphs. While following a…
croax
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Aggregating more than two RRDs in RRDGraph returns empty graph

I am using rrd graph to manually generate a graph of aggregated data, based on RRDs that were collected via PNP4Nagios. My issue is that when I try and aggregate more than two sources, I get a blank graph. I believe I have the correct CDEF format,…
Geekman
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Munin Interpretation - Server Limits

I've installed Munin to monitor my debian (squeeze) webserver (2 x Intel Quad Xeon 4x2.66GHz, 16GB RAM, 2x1000GB HDD Raid). There are around 50k visits per day. The scripts are very simple and there is a caching system with files to avoid too much…
Wolfgang Pürstner
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How to make munin graph (derive or counter) not per second?

I have values: 10:00 - 505 11:00 - 507 12:00 - 510 13:00 - 525 and i want get graph: 11:00 - 2 12:00 - 3 13:00 - 15 but have per second(munin run every 5 minutes): 11:00 - 2/300 12:00 - 3/300 13:00 - 15/300 how i can make graph per hour?
askovpen
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Munin throwing errors with fresh install

I just installed munin on a fresh ubuntu system, munin node throwing the following errors: 2013/01/30-21:10:02 CONNECT TCP Peer: "[::ffff:127.0.0.1]:39316" Local: "[::ffff:127.0.0.1]:4949" Use of uninitialized value in pattern match (m//) at…
user156646
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Move Munin on new server with old data

I have to move my Munin instance on new server. I've installed from package (Debian) Munin 2.x. All was fine, but ... I copied /var/lib/munin to new server. But after updating munin overwrite old data and i have empty graph :( Could you tell me why?…
Rafał Kamiński
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Simple tools to quickly capture and graph some arbitrary metrics on a server?

I want something that's quick to set up, doesn't have a lot of dependencies, outputs pretty graphs, and is easily customizable (e.g. calling external scripts that simply output a numerical value). I've worked with Munin and Zabbix before, but feel…
toupeira
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Monitor cpu usage (and perhaps memory using) for a single process simple as possible

I'm searching the easiest way to monitor the cpu usage of a single process in linux. Use ps and change output is the way i have, but maybe a monitor tool is better. Also I want to plot the usage (nice look). graph and gnuplot are to ugly ;) But plot…
block
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Monitor incoming TCP/UDP flood attack and graph it

I'm preparing a presentation on a security issue and want to include a demonstration. It won't be in real time, I just need to show some pictures of the results. I have some VPSes that will perform a tcp or udp flood attack simiultanesly on another…
Ion
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5 answers

Fancy graphing for network traffic

I'm currently looking for a solution that would allow me to easily graph traffic on a network. Basically what I'm looking for is anything that could actively provide graphs/charts/colors etc. for our management to see "whats going on" in the…
Robert Taylor
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Solution for graphing application events metrics in real time

We have an application that parses tweets and we want to see the activity in real time. We have tried several solution without success. Our main problems is that the graphing solution (example:graphite), needs a continious flow of metrics. When the…
Julien Duponchelle
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