Sensu is a powerful Next-Generation monitoring framework that is quickly replacing traditional monitoring systems like Zabbix, Icinga, and Nagios.
But diving into a new monitoring system can be difficult without a guide to show you the way! This course can be your guide to understanding how Sensu works and how to deploy it to your infrastructure.
This introductory course will teach you the basics of Sensu's architecture and how to take advantage of the flexibility it provides to build awesome systems.
When you are finished with this course you will have setup a complete monitoring solution that actually checks things and actually sends email. This is not a theoretical course, it is a practical one that leaves you with skills and infrastructure to build upon.
Let Me Make The Mistakes For You
It's one thing to read docs and get perfect copy-paste command line examples that work. It is another thing to be in real life watching a real engineer fight a live system and try to get it working! I purposely make mistakes just to demonstrate what happens when things go wrong. That gives me an excuse to troubleshoot the problem and then solve it. Then, when you encounter that same mistake in your infrastructure, you will know exactly what to do!
For Dev and Ops Alike
Sysadmins, Devops Practitioners, Infrastructure engineers, SREs, and simply curious software engineers should take this course to better their craft and learn more about what makes Sensu special. It is not your grandfather's monitoring system. It is a modern, scalable, flexible monitoring system with a great API to integrate with your infrastructure.
Even if you don't end up using Sensu in Production, taking this course will still level-up your monitoring game, by increasing the scope of your DevOps toolbox. So enroll today and check it out!
Just an introduction into what this course is, who I am, and what Sensu is
Sensu is a monitoring framework. I uses existing open source components and does not re-invent the wheel.
The plus side to this is that Sensu by itself is easy to understand and simple. The downside to this is that it does put the burden of maintaining the other components on the administrator.
Here is a list of the components that covered in this video:
Don't panic. While this initial architectural overview may be a blur, subsequent lectures will go deeper into each component.
What makes Sensu special? Why should I even bother investing in a different monitoring system? In this lecture I'll hint at some of the different types of things you can build with Sensu, and explain how such a flexible monitoring framework can really change how you build systems, for the better!
RabbitMQ is the primary mechanism by which messages are passed in Sensu. Let's set it up.
The Sensu Server and API use Redis to store state. I needs to be running and configured.
The first step of learning how to use Sensu is installing it! This lecture will demonstrate installing Sensu on Ubuntu, but the instructions for installing it on other OSes involve very similar steps.
The Sensu Client is the agent that actually executes Checks for Sensu. Let's configure it, start it, and check out the logs.
Now let's setup something we can see: a dashboard.
In this lecture I'll discuss some of the terminolgy and actions you can take in Uchiwa (the Sensu dashboard)
Think "a dashboard is a dashboard"? Let's make sure you understand what clicking things in the dashboard actually does...
The `cat` handler isn't very interesting or useful. Lets get this thing to email me.
This check-mem thing is kinda contrived. Let's install a real check and see what it looks like.
This lecture will discuss the differences between the Community supported version of Sensu versus the Enterprise Edition.
Sensu is a very flexible monitoring system that makes you think a little differently about how to monitor things.
This lecture will conclude the course with some final thoughts on what makes Sensu great!
There are a number of design features of Sensu that we touched upon that can allow a very dynamic monitoring environment. This lecture will talk about how to go further with these features and mention the next level "intermediate" course.
I love building systems I can be proud of.
I also love teaching and empowering others to do the same.
All of my lessons come from this passion, and hopefully it shows.I teach from a background of real experience on tools and technologies that I use in production. (I don't want to teach something that I haven't been on call for.)
I specialize in Advanced deep-dives in distributed systems that are difficult to learn about from a manual. (Which is why I love teaching them!)