Monitoring a Log File

By Derek Bullet_white Posted in Plugins Bullet_white Comments Comments

A log file is a lot like a neglected board game covered in dust. I don’t play board games that often, but when I do, I always say “we should do this more often”. The log files we have for Scout collect lots of great information, but we only reference them when investigating an incident. They often aren’t a part of our daily lives (but they should be).

Yaroslav Lazor of Railsware, an agile Ruby on Rails development firm, has created a Scout plugin that makes it easy to extract basic information from a log file on a regular basis. His Log Watcher plugin, brilliant in its simplicity, counts the number of occurrences of a given pattern in a file, reporting the data to Scout.

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Memcached Monitoring

By Andre Bullet_white Posted in Plugins Bullet_white Comments Comments

Jesse Newland of Rails Machine has created a Memcached monitor plugin to track all the key stats from your Memcached instance, including gets/ sets/ hits/ misses/ evictions/ per second, uptime, memory used, KB read per second, KB written per second, and more.

Install the Memcached plugin from our directory, and enjoy! Let us know if you have any feedback.


Why web developers have more to learn from Wall Street than Steve Jobs

By Derek Bullet_white Posted in Business Bullet_white Comments Comments

In 2006, the biggest risk-taker on Wall Street looked like John Paulson. This certainly wasn’t based on Paulson’s past behavior. Paulson managed a middle-of-the pack hedge fund. He made careful, boring deals. He rode the bus and liked to ride his bicycle. In other words, he was the anti-Gordon Gekko.

The risk Paulson was taking? He was betting against the mortgage market using credit default swaps. Insuring $1 million in high-risk mortgages was dirt cheap – around $10,000. If all of the homeowners made their payments, Paulson would be out $10,000. If all of the homeowners defaulted, he would make the entire value of the bundle – $1 million.

For Paulson to make money, these high-risk borrowers needed to default. At the time, most analysts thought that a perfect storm of rising unemployment rates, higher interest rates, and poor local economic health was needed to trigger widespread defaults. However, Paulson’s extensive modeling showed widespread defaults required just one trigger: flatlining home prices. With home appreciation rising at 5 times the rate seen from 1975-2000, there was plenty of room to fall back.

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RabbitMQ Monitoring Plugins

By Derek Bullet_white Posted in Plugins Bullet_white Comments Comments

Doug Barth of Interactive Mediums has created two plugins for monitoring RabbitMQ, an enterprise messaging system based on the emerging AMQP standard.

Doug’s RabbitMQ Overall Monitoring Plugin monitors the overall health of RabbitMQ – reporting the number of queues, connections, etc. His RabbitMQ Queue Monitoring Plugin drills down to a specific queue.

Doug tells me that Interactive Mediums, which offers a mobile customer engagement platform used by many top brands, has been very happy with RabbitMQ’s small memory footprint and stability.

We use RabbitMQ for processing all of the SMS messages that flow through our system. The setup is pretty typical, wherein we queue messages coming into our system and going out of our system. We have also been expanding our usage to include some supporting systems. Our second usage involved switching our background daemons to queued approach. Where previously we had a single daemon processing a type of background work (sending a single message to thousands of phones, for example), we now enqueue a message to a pool of background daemons which pull a unit of work and process it.

If you’ve developed a plugin for Scout that might be useful to other users, tell us about it!


MongoDB Slow Queries Monitoring

By Andre Bullet_white Posted in Plugins Bullet_white Comments Comments

Thanks to Jacob Harris, we have a MongoDB Slow Queries plugin for Scout.

The MongoDB plugin captures the number of slow queries per minute according to the threshold you specify. It also reports details of any slow queries that take place.

Of course, like any other Scout plugin, you can set trend triggers, graph results, etc.

Please install from our directory, kick the tires, and let us know if you have any feedback!

Also, for general MongoDB Monitoring, checkout the MongoDB Monitoring Plugin.


Scout makes the big screen at Runa

By Andre Bullet_white Comments Comments

There are lots of things that look great on big, wall-mounted flat screen displays: Halo, Dark Knight, the Super Bowl.

How about Scout-generated graphs?

Robert Berger, CTO of Runa sent us a picture of their Scout setup. Runa has an LCD screen of Scout graphs positioned above the most-visited location of any tech office: the coffee machine.

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