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Trevor Parsons

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Top Stories by Trevor Parsons

Keepalived and HAProxy in AWS: An Exploratory Guide This article originally published on the Logentries Blog. We're going to explore high availability and load balancing using Keepalived and HAProxy. Keepalived is a routing software designed to provide simple and robust facilities for load balancing and high-availability to Linux systems and Linux-based infrastructures. HAProxy is an open source load balancer/reverse proxy generally used for load balancing web services, but also has the functionality to load balance TCP traffic. Together, Keepalived and HAProxy provide some unique benefits Specifically, they provide a low cost solution for high availability compared to proprietary hardware-based load balancers. Keepalived uses the VRRP protocol to detect when HAProxy is down and fails with minimal downtime. The following documentation is focused on setting up Keepal... (more)

Why Creating Real-time Dashboards from Your Log Data Is a No-Brainer

I recently came across a blog post on OpenOpsIQ asking the question: "With the introduction of real-time logging, why cant we have a single solution for monitoring the entire stack?" In my opinion, you can! As we have seen lately from a survey we carried out across a sample of the Logentries' 25,000+ user base, organizations are starting to apply logs for a wider range of use cases. So why would you do this, and why does using log data to create real-time dashboards for different views into your system make so much sense? Here's a few reasons why I think creating dashboards from y... (more)

How to Combine D3 with AngularJs

Last month,  Mark Lacomber wrote a post describing how to use D3.js visualization library at Logentries. I am following up to show how to combine D3 with the AngularJS framework. As we all know, Angular and D3 frameworks are very popular, and once they work together they can be very powerful and helpful when creating dashboards. But, they can also be challenging and confusing especially when new to these frameworks. The right way to incorporate D3 with Angular is to use custom directives. Directives in Angular are essentially functions that are executed on a DOM element. Let's ... (more)

Logging with Diamond

"Diamonds never lie to me, For when love's gone, They'll luster on."  -Shirley Bassey If you haven't heard, Diamond is a fantastic Python daemon that lets you collect system metrics. With Diamond, you can collect metrics like CPU, memory, network, i/o, load and disk usage, all in readable form. Even better, is that all this data can be sent to Logentries where you can take advantage of our powerful search, alerting, and graphing tools! Now, supporting direct integration has never been simpler to send detailed system metrics. Want to correlate fatal log errors against your system... (more)

How to Avoid the #BigData Black Hole | @BigDataExpo [#IoT]

It takes a lot of will power, in our data obsessed world to say "too much!" However, there are many ways where too much information is destroying productivity, and actually causing bad decision making, not good. But it is hard to avoid the world of opportunities that has been opened in data collection and analysis. So how do you balance the two? The first step is to understand there is a big difference between data collection, and it's utilization. While it seems subtle, the difference is key, and utilization is where many make mistakes. Many confuse data collection and data uti... (more)