SMS Notifications

By Andre Bullet_white Posted in Features Bullet_white Comments Comments

12/23 - UPDATE - Scout Agent v5 has exited the BETA phase. If you're already using Scout, upgrade instructions appear when viewing a server at scoutapp.com.

We’ve prepared a BETA release of the Scout Agent that supports SMS notifications and makes creating your own plugins easier. We and a group of beta accounts been running it internally for some time, and now we invite you to try it out.

Get the New Agent

1) Install the Scout agent gem version 5.0.2:

sudo gem install scout

2) Change your crontab entry for Scout so it runs every minute, which is just
* * * * * on Linux. Your current setup is */3, */10, or similar.

Dual-tier SMS Alerts (Ultimate Accounts only)

When things go really wrong it’s important you find out quickly. Using Scout’s triggers, you can now specify a separate threshold for SMS alerts. For example, send an email alert if disk capacity is over 70% and an SMS alert if disk capacity is over 90%). Here’s how:


1) Enter your SMS info in the new "notifications" section of Scout:


2) Edit/create a trigger. You’ll see a new option for the SMS threshold:

When the entered threshold is crossed, you’ll receive an SMS alert. SMS alerts are currently available only on Ultimate accounts.

Easier Plugin Creation and Editing

Because the new Agent pings us every minute, it is much more responsive to changes you make in configurations on Scoutapp.com. Any changes you make will be picked up within 60 seconds by the new Agent, regardless of your plan level.

Explicit Checkin Times

When you upgrade to the new Agent, you'll see the "Server Contact" box on your server homepage, providing visual confirmation of most recent and next checkin times:

Summary

Get your new Agent here:


sudo gem install


We’d love your feedback on the new Agent and functionality. Leave your comment here or send an email with with any comments.

 

Production Rails Tuning with Passenger: PassengerMaxProcesses

By Derek Bullet_white Posted in HowTo Bullet_white Comments Comments

Our co-author today is Jesse Newland, CTO of RailsMachine. Jesse keeps RailsMachine customers up and running and troubleshoots their toughest problems. We’re pleased to have him share some of his expertise on Phusion Passenger tuning.

Say your Rails application is running in production and it’s getting good traffic. Performance isn’t as good you would like. You’ve already determined that your database is not the bottleneck. What’s your next move?

There is a good chance that Passenger’s PassengerMaxPoolSize needs to be adjusted. PassengerMaxPoolSize specifies how many instances of your application Passenger will spin up to service incoming requests. If you were running Mongrels back in the day, PassengerMaxPoolSize is equivalent to the number of mongrels you configured for your app. The value of PassengerMaxPoolSize has a major bearing on your application’s performance.

Read More →

 

Partnership with Rackspace Cloud Computing

By Derek Bullet_white Comments Comments

Powered by Rackspace Cloud Computing

In less than two months, we’ve seen strong adoption of Scout’s simple cloud monitoring functionality. 1 of every 5 hosts monitored by Scout is in the cloud.

With more movement to the cloud, we’re happy to announce a new partnership with Rackspace Cloud Computing. Rackspace has an easy-to-use interface for provisioning servers backed by the fanatical support they are known for. Setting up monitoring on a Rackspace Cloud Server is trivial – install our Ruby gem and add a Cron entry.

If you’ve used Scout, share your experiences on Rackspace’s Cloud Tools page for Scout.

To learn more about Scout & cloud monitoring, checkout our blog post on the functionality, review our FAQ, or watch the short video below.

 

Tune triggers from your email inbox

By Derek Bullet_white Posted in Features Bullet_white Comments Comments

When you get started with Scout, we try to setup sensible default triggers for events you may need to investigate on your servers.

For example, Scout generates an alert if your disk usage exceeds 85% or CPU Load over the last minute exceeds 3.

However, every server and application is different. For example, a CPU load of 3 is fine on some servers but a problem on others. We’ve made it easier to tune Scout for your setup if Scout is sending too many alerts.

Read More →

 

Process Memory Usage: Troubleshooting with Scout

By Andre Bullet_white Comments Comments

Scout customer Eric Lindvall wrote up a nice piece on finding and fixing memory leaks in god -- specifically, when issuing "god load" on long-running god processes. Give it a read, it provides good insight into the troubleshooting process and the tools he used. Eric points to the Scout graphs showing both the symptoms:

And the solution:


Who wouldn't love to see memory usage go down and stabilize like that? Eric also provides patches to god in case you're having similar issues. Check out his full writeup for details.

If you're having trouble with memory consumption of a specific process, check out Scout's Process Memory Usage plugin.

 

Running a freemium web app? Here's a big reason we're growing.

By Derek Bullet_white Posted in Business Bullet_white Comments Comments

Before Scout, my experience developing software was primarily consulting. Success was measured by delivering software on time and on budget.

With Scout, a subscription-based service, my focus isn’t on scheduling. We are self-funded and we didn’t have the luxury of a venture-backed startup. We’re focused on figuring out which pieces of development work can increase revenue the most. What follows is how we’re approaching it.

Read More →

 

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