RRDtool - Rates, normalizing and consolidating Index Intro RRDtool stores rates during time intervals. These time intervals are on well defined boundaries in time. However, your input is not always a rate and will most likely not be on such boundaries. A couple of different stages should be recognized: transform to a rate normalize the interval consolidate intervals into a larger one This does not get in your way, it is not doing bad things to your data. All stages apply for all input, no exceptions. If you use GAUGE, the input is already a rate, but it is still subject to normalization. Transform to a rate Everything is processed as a rate. There are several ways for RRDtool to get a rate from its input: GAUGE: keep it "as is". In each of these four cases, the result is a rate. This concludes step 1. About rate and time If you transfer These numbers are all different yet they have one thing in common: rate multiplied by time is a constant. Normalize interval The input is now a rate but it is not yet on well defined boundaries in time.
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Remote Ubuntu Dapper Drake Install – nanoRAILS Don’t try this at home! Well, actually, there are 2 ways you can look at it. Only attempt a remote install if it is absolutely necessary and there are no other practical ways of doing the OS install. It may be fun, and you’ll be impressed with yourself if you succeed, but the downside is that it takes a lot more time to do it remotely, it can be pretty tough on your nerves while you wait for the machine to come back up, eventually, and that’s it ever does. I can imagine a lot of things going wrong… On the other hand, that’s exactly what you want to do. Anyway, now you’ve been warned and if you are still reading, here’s the challenge I was facing. I had a machine (not the fastest, but a machine) with an old version of Linux. So I did some research, and using Google, it is fairly obvious that the article by Erik Jacobson that you should read first if you want to attempt any remote install of debian is the authority on the subject. I could not find anything on Ubuntu, however.
RRDtool - Some tutorials by Alex van den Bogaerdt MRTG - MRTG Documentation mrtg What is MRTG ? mrtg-unix-guide The MRTG 2.17.4 Linux/Unix Installation Guide mrtg-nt-guide The MRTG 2.17.4 Windows Installation Guide mrtg-nw-guide MRTG for NetWare mrtg-reference MRTG 2.17.4 configuration reference cfgmaker Creates mrtg.cfg files (for mrtg-2.17.4) indexmaker Creates index files for mrtg web sites (mrtg-2.17.4) mrtg-contrib Contribution Guidelines for MRTG mrtg-faq How to get help if you have problems with MRTG mrtg-ipv6 IPv6 support in MRTG mrtg-logfile description of the mrtg-2 logfile format mrtg-mibhelp A Table of some interesting OIDs mrtg-rrd How to use RRDtool with MRTG mrtg-webserver hints for web server configuration mrtg-traffic-sum Builds monthly traffic summary from mrtg log files
RRDtool - rrdtutorial RRDtool is written by Tobias Oetiker <tobi@oetiker.ch> with contributions from many people all around the world. This document is written by Alex van den Bogaerdt <alex@vandenbogaerdt.nl> to help you understand what RRDtool is and what it can do for you. The documentation provided with RRDtool can be too technical for some people. This tutorial is here to help you understand the basics of RRDtool. It should prepare you to read the documentation yourself. Important Please don't skip ahead in this document! Sometimes things change. Also, sometimes bugs do occur. I fixed the speed4.png example (and added a note). What is RRDtool? RRDtool refers to Round Robin Database tool. What data can be put into an RRD? You name it, it will probably fit as long as it is some sort of time-series data. Many examples below talk about SNMP which is an acronym for Simple Network Management Protocol. What can I do with this tool? RRDtool originated from MRTG (Multi Router Traffic Grapher). How will you help me?
Keep Tabs on Network Services with Nagios Nagios provides an advanced server and device monitoring solution. It has become the de facto standard among other service monitoring applications, and is highly competitive with the non-free ones. This article will explain why Nagios is useful, and then cover some installation concepts to help get you started. Previously known as the NetSaint project, Nagios morphed into its current form about four years ago. Nagios can monitor servers and their services, as well as network devices. More primitive monitoring solutions only allow for a simple ping to detect whether or not a server is still up and running. Plug-ins is where Nagios really shines. Nagios and its many plug-ins can monitor an astounding number of services, and more. From the webpage you can view all of your hosts, and their status, in an easily read red-equals-bad, green-equals-good interface. There are a few things to realize, though. Welcome back; the next step is to compile and install Nagios on the server.
Seven steps to increase Linux security - Program - Linux - Builder AU Formulate a big data disaster recovery plan today Formulate a big data disaster recovery plan today It's only a matter of time before IT is asked about its plans to back up, restore, and recover from a disastrous big data outage. Put your big data-specific DR plan with this guide. Information for IT grads before accepting a job offer Information for IT grads before accepting a job offer IT grads are in demand. GE's FirstBuild: Can they harness startup mojo? GE's FirstBuild: Can they harness startup mojo? General Electric is looking to students, entrepreneurs, and makers to co-create the products of the future. Lyndsey Gilpin // April 15, 2014, 4:00 AM PST Photos: 15 gadgets to reduce your energy consumption Earth Day is April 22, so it's a great time to look at your personal energy consumption. Erin Carson // April 7, 2014, 1:50 PM PST 10 most embarrassing Twitter blunders We've all seen tweets that inspire the question, "Did they really just post that?" Editor's Picks
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