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The DevOps 2.5 Toolkit
book

The DevOps 2.5 Toolkit

by Viktor Farcic
November 2019
Intermediate to advanced content levelIntermediate to advanced
322 pages
7h 3m
English
Packt Publishing
Content preview from The DevOps 2.5 Toolkit

Alerting on saturation-related issues

Saturation measures fullness of our services and the system. We should be aware if replicas of our services are processing too many requests and being forced to queue some of them. We should also monitor whether usage of our CPUs, memory, disks, and other resources reaches critical limits.

For now, we'll focus on CPU usage. We'll start by opening the Prometheus' graph screen.

 1  open "http://$PROM_ADDR/graph"

Let's see if we can get the rate of used CPU by node (instance). We can use node_cpu_seconds_total metric for that. However, it is split into different modes, and we'll have to exclude a few of them to get the "real" CPU usage. Those will be idle, iowait, and any type of guest cycles.

Please type ...

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Publisher Resources

ISBN: 9781838647513Supplemental Content