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articlemanagementmonitoringnewstechtip August 29, 2012 by Joe Pruitt
Articles in this series: Monitoring Your Network with PRTG - Overview, Installation, and Configuration In my first article in this series, I talked about the PRTG Network Monitor from Paessler and how we decided to use it for our DevCentral migration from our IT datacenter into a cloud provider.  In this article, I’m going to talk about the core of PRTG’s monitoring: it’s sensors. What is a Sensor? As the PRTG folks state: A sensor is the “heart” of the...
A few months back, our team moved DevCentral.f5.com from our corporate datacenter to a cloud service provider.  As part of this project, we were required to take over the tasks previously performed by our IT department.  One of the tasks that fell into my hands was to look at the monitoring and alerting for the heath of the systems in our environment.   These systems included our application tier (application, database, and storage) as well as the F5 network infrastructure (G...
Multiple times in recent iRules presentations, whether on the road or here within F5, there have been questions raised when the topic of logging within iRules gets brought up. Specifically people are curious about logging best practices, performance impact, when to log or not, and how to ensure they're not bogging down their device while still recording the necessary data. As such, it seems like a pertinent topic to demystify a bit by way of background and explanation. First, to understand ...
articlebig-ipnewstechtip January 31, 2012 by Colin Walker
Version 11 of BIG-IP brought with it many enhancements and new features ranging across the entire product. iRules improvements and features were among the cooler things changed, in the opinion of this avid iRuler. Between sideband connections, iFiles and improvements of already existing functionality, it's hard to imagine there is more yet to discuss in v11 iRules goodness, but there is. iStats were introduced in v11, and are worth talking about, as they can dramatically change the way you a...
articlenewstechtip August 12, 2011 by DataManager
Introduction This article illustrates how to create a file criteria directly through the ‘Criteria Wizard’ as well as by uploading a text file that contains the criteria. As an example we will create a criteria that will identify file names that contain characters that are not allowed in a CIFS filenames. This criteria can then be used in validated by creating an advanced report with an inventory from an NFS file system. Advanced reports and file criteria are only available in the full version o...
articleirulesbig-ipdevnewstechtip April 06, 2011 by Joe Pruitt
This is the third article in a series on building link tracking functionality with iRules.  The previous articles were Link Tracking With iRules - Part 1 Link Tracking With iRules - Part 2 - Filtering Results In the first article, I focused on building the core link tracking logic and in the second I added the logic to implement a simple output filter to only list the URI’s you are interested in seeing the statistics for.  In this article I will build on additional funct...
articleirulesbig-ipdevnewstechtip March 23, 2011 by Joe Pruitt
A common request from application developers is the ability to track the popularity of different areas of their applications.  This could be which app is most popular or which image is linked to most often.  Analytics packages such as Google Analytics do a great job with this but they require injection of client side JavaScript to tell the analytics products about the page views. In my previous article titled “Link Tracking With iRules - Part 1”, I showed how to implement a simple lin...
articleirulesbig-ipdevnewstechtip March 16, 2011 by Joe Pruitt
One common request that application developers ask of their network admins is to report on the amount of times links in their applications are requested.  Various analytics packages including page trackers can be added to the application pages to store those values but in this article, I’ll show you how to create a very simple link tracker with a transparent iRule applied to your virtual server of choice. Storing The Data The first step is to take the incoming URI’s and store ...
articleirulesdevnewstechtip March 10, 2011 by Joe Pruitt
Overview The Application Connecting To The BIG-IP Creating a HTML Page Inserting The HTML Page Into The Browser Control Refreshing The Charts Resizing The Charts Get The Source Related Articles Overview This is the second article in a series around building a monitoring application with the Google Visualization APIs.  In my previous article BIG-IP CPU Visualization with the Google Visualization API, I illustrated how to build a C# WinForm application using  the Gauge Visual...
We hope by now that you have gotten a running start with our Ruby iControl libraries. We have posted a few other Tech Tips on Ruby and iControl,  but have not touched on the retrieval of information from the BIG-IP. In this Tech Tip, we will discuss this how to handle the information returned as SOAP::Mapping::Objects. SOAP::Mapping::Objects are used by the Ruby iControl library to return data requested from the BIG-IP. In this example, we will be working with SSL certificate information ...
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