May 2019
Intermediate to advanced
442 pages
11h 36m
English
Content preview from Hands-On Infrastructure Monitoring with Prometheus
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Dead man's switch alerts
Imagine that you have a set of Prometheus instances using an Alertmanager cluster for alerting. For some reason, a network partition happens between these two services. Even though each Prometheus instance detects that it can no longer reach any of the Alertmanager instances, they will have no means to send notifications.
In this situation, no alerts about the issue will ever be sent:
Figure 11.13: Network partition between Prometheus and Alertmanager
The original concept of a dead man's switch refers to a mechanism that activates if it stops being triggered/pressed. This concept has been adopted in the software world ...
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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.