May 2019
Intermediate to advanced
442 pages
11h 36m
English
Content preview from Hands-On Infrastructure Monitoring with Prometheus
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Chapter 9, Defining Alerting and Recording Rules
- This type of rules can help take the load off heavy dashboards by pre-computing expensive queries, aggregate raw data into time series that can then be exported to external systems, and assist the creation of compound range vector queries.
- For the same reasons as in scrape jobs, queries might produce erroneous results when using series with different sampling rates, and having to keep track of what series have what periodicity becomes unmanageable.
- instance_job:latency_seconds_bucket:rate30s needs to have at least the instance and job labels. It was calculated by applying the rate to the latency_seconds_bucket_total metric, using a 30-second range vector. Thus, the originating expression could ...
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