Posts tagged Logentries

6 min IT Ops

Do You Still Email Yourself from Your Code? How to Stop the Madness

A few years back now, I took on an assignment to help a company modernize a series of legacy .NET applications.  One of these did some back office processing.  A vendor would stick some files on a shared drive, and a windows scheduled task would invoke this bit of code to parse the file, apply a whole slew of business rules to its contents, and then update the appropriate internal systems.  The details are both proprietary and uninteresting, so I will spare you those. The author of this appli

3 min IT Ops

Webinar Recap: Logentries Feature Walkthrough

Our March webinar was broadcasted & recorded on March 16th 2016. This broadcast included a Logentries demonstration by Mike Neville-O’Neill, followed by a live Q&A lead by Justin Buchanan and Matt Kiernan. The webinar recording is available here [http://info.logentries.com/logentries-feature-walkthrough-march]. Below is a summary of some of the features covered. To follow along, or to try the features for yourself, be sure to create a free Logentries account [https://logentries.com/get-start

13 min IT Ops

The 4 Steps for Creating a Log Enabled Marketing Campaign

Typically, most logging activity in the online world is concerned with collecting information about an enterprise’s digital infrastructure. Machine logs, application logs, network logs, database logs, access logs are a few examples of such activity. However, as marketing campaigns become more integrated into application activity, using log data to monitor and to measure the effectiveness of a campaign is a viable extension of an enterprise’s current logging activity. But, we need to beware.

5 min IT Ops

Brics Vs RE2/J

By Benoit Gaudin and Mark Lacomber Regular Expressions When it comes to searching unstructured data, regular expressions [https://logentries.com/doc/regex/] are a very useful and powerful tool. The power provided by popular regular expression libraries does come with a significant performance cost in some cases though, both when compiling regular expressions into automata (state explosion problem when determinising automata, as illustrated on some examples here [http://www.microarch.org/micro4

5 min IT Ops

A point of @Contention- cache coherence on the JVM

Java 8’s major changes- lexical closures, the stream API, e.t.c have overshadowed a slew of little gems, one of which I only discovered the other day- the @Contended annotation. False Sharing Chances are you’re reading this on a device with more than one CPU. There’s therefore also quite a good chance the you have more than one thread of execution running at the exact same time. There’s an equally good chance that some of your fancy multiprocessor CPU’s on-die memory (aka L2/3 cache) is share

4 min IT Ops

Deciphering MySQL Logs: The What, Why, and How

Logs are one of the best ways to understand what a server is doing. Thankfully, MySQL has no shortage of log activity to assist a DBA in its maintenance. It writes out its activity to 5 different logs.  This post will take a look at the existing MySQL logs and how they assist the administrator. * On Windows, - The log is written to the data directory with a .err extension even if not explicitly enabled. * Errors are automatically written to the Event Log. This behavior is standard and

3 min IT Ops

How to Analyze Heroku's New Runtime Metrics

Heroku Labs [https://devcenter.heroku.com/categories/labs], Heroku’s platform for providing “experimental features that are under consideration for inclusion into the Heroku platform”, recently launched <a href="https://devcenter.heroku.com/articles/log-runtime-metrics" target="_blank">log-runtime-metrics</a> for “enabling visibility into load and memory usage for running dynos”. With log-runtime metrics, Heroku now inserts the following per-dyno stats directly into the log stream: * Memory

8 min IT Ops

7 Rules for Using Log Data Effectively in a Retrospective

Log data [https://logentries.com/insights/log-data-centralization/] can be an indispensable tool for doing an effective Retrospective following a technical disaster. Yet, often the data is misused. And many think that the entire Retrospective process is flawed altogether. More often than not Retrospectives, also known as Post Mortems, turn into technical autopsies. A bunch of people get together to find out how the system died and who is responsible. Data becomes nothing more than evidence of

3 min IT Ops

New Automated Log Parsing

The Logentries product is always improving and advancing. There are some exciting new features available today, and another great feature coming this month! Included in today’s announcement: 1. Automated Log Parsing * Apache and Nginx logs * Syslog Tags 2. Nested JSON Support -------------------------------------------------------------------------------- Automated Log Parsing If you’ve ever sent data to Logentries you may have noticed keys being automatically highlighted and availa

10 min IT Ops

Logging for Unikernels

Unikernels are the next step in virtualized computing. There is a lot of hubbub right now in the tech-o-sphere about unikernels. In fact, in many circles unikernels are thought to be the Next Big Thing. There is a lot of recent news to justify this perspective. Docker, a key player in Linux Containers, has acquired Unikernel Systems. MirageOS, the library that you use to create unikernels has solid backing from Xen and the Linux Foundation as an incubator project. Unikernels are not going any

2 min IT Ops

Logging from Sonos Speakers with a Webhook

Our Boston sales office has a big set of Sonos [https://www.sonos.com/] speakers around their office that pumps tunes out across the office. It’s great for camaraderie, until someone sticks country music on… On a visit, I had an hour to spare, so I decided to find out if I might be able to log the music activity to Logentries, and it was surprisingly simple. After some quick googling, I found a few node.js libraries that interface with Sonos, and the Sonos HTTP API [https://github.com/jishi/n

6 min IT Ops

The yellow brick road to machine learning with honeypot data: Our lessons learned

Recently the Rapid7 Logentries [https://logentries.com/get-started/] team attended a hackathon over at one of our Boston offices. This was a great way for us to integrate with the other Rapid7 teams within the company and to have fun messing around with things we don’t usually have time for in a working day. The project that my team worked on involved machine learning with the dataset collected by some of the various Heisenberg honeypots that Rapid7 has deployed. More information about these

3 min IT Ops

Webinar Recap: Logentries Feature Walkthrough

Our second February webinar was broadcasted & recorded on February 25th 2016. During this broadcast, Justin Buchanan demonstrated many of the essential Logentries features. Below is a summary of some of the features covered. To follow along, or to try the features for yourself, be sure to create a free Logentries account [https://logentries.com/get-started/?le_trial=blog-febwebinarwalkrecap]. Query Log Data Once you successfully get data [https://logentries.com/resources/how-to-videos/sendin

5 min IT Ops

The Role of Log Files in Experiments

You have heard, no doubt, of theLean Startup [http://www.amazon.com/The-Lean-Startup-Entrepreneurs-Continuous/dp/0307887898/] .  If you need a refresher to place the name, it’s a book, but it’s also a business trend with such momentum as to have awebsite advertising it as a “movement.” [http://theleanstartup.com/]And, frankly, that advertisement is hardly a stretch.  The title and the terms coined in it are on everyone’s lips in the tech industry these days because people at companies of all s

2 min IT Ops

Infographic: Log Management & Analytics at a Glance

Logentries surveyed over 400 IT professionals about their views of log management [https://logentries.com/get-started/?le_trial=survey-infographic-blog] and analytics. We found that many people are planning on using and investing in public cloud infrastructure such as AWS, Google [/2016/02/how-to-compare-google-compute-engine-aws-ec2/], and Azure in 2016. Who took the survey? 40% of respondents identify as a Developer / Dev Manger, as we expected. We found the 3% of responses from Support and