Building numerical-based alerts

Grafana manages alerts using queries in the following data sources:

• All the data sources integrated by Grafana Labs: InfluxDB, Graphite, Prometheus, Loki, Elasticsearch, Google Cloud Monitoring, Cloudwatch, Azure Monitor, MySQL, PostgreSQL, MSSQL, OpenTSDB, and Oracle. In all the cases, the alerting must be enabled.
• All the community-developed data sources that have alerting enabled.

Besides data sources alerting, Grafana has its internal alerting metrics. You can see all the internal metrics in the following table:

Table 10.1 – Internal metrics for Grafana alerts

Time-series and tabular data

In this book, we have focused mainly on time-series data. When you use time-series data, each record must be reduced to a single number, so alert rules can be applied.

On the other hand, if you have tabular data, you only have to compare the value obtained by the query.

You can process alerts in tabular...