May 2019
Intermediate to advanced
442 pages
11h 36m
English
Content preview from Hands-On Infrastructure Monitoring with Prometheus
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Gauge
A gauge is a metric that snapshots a given measurement at the time of collection, which can increase or decrease (such as temperature, disk space, and memory usage).
If a scrape fails, you will lose that sample, as the next scrape might encounter the metric on a different value (higher/lower).
To help visualize this type of metric, here are some examples of gauges and their graphical representation based on the test environment we created in the previous chapter:
- The number of established TCP connections on the Alertmanager instance:
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The amount of free memory on the Grafana instance – notice the middle gap caused by an instance ...
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