July 2018
Beginner to intermediate
386 pages
9h 6m
English
Content preview from Prometheus: Up & Running
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 19. Alertmanager
In Chapter 18 you saw how to define alerting rules in Prometheus, which result in alerts being sent to the Alertmanager. It is the responsibility of your Alertmanager to take in all the alerts from all of your Prometheus servers and convert them to notifications such as emails, chat messages, and pages. Chapter 2 gave you a brief introduction to using the Alertmanager, but in this chapter you will learn how to configure and use the full power of it.
Notification Pipeline
The Alertmanager does more for you than blindly convert alerts into notifications on a one-to-one basis. In an ideal world you would receive exactly one notification for each production incident. While this is a stretch, the Alertmanager tries to get you there by providing you with a controllable pipeline for how your alerts are processed as they become notifications. Just as labels are at the core of Prometheus itself, labels are also key to the Alertmanager:
- Inhibition
-
On occasion, even when using symptom-based alerting, you will want to prevent notifications for some alerts if another more severe alert is firing, such as preventing alerts for your service if a datacenter it is in is failing but is also receiving no traffic. This is the role of inhibition.
- Silencing
-
If you already know about a problem or are taking a service down for maintenance, there’s no point in paging the oncall about it. Silences allow you to ignore certain alerts for a while, and are added via the Alertmanager’s ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.