Description: The panel query in Grafana refers to the instruction or set of instructions used to retrieve data displayed in a specific panel within a dashboard. Grafana is a data visualization platform that allows users to create interactive graphs and panels from various data sources, such as databases, APIs, and other monitoring systems. The panel query is fundamental as it defines what data will be shown, how it will be processed, and in what format it will be presented. These queries can be written in different languages depending on the data source used, such as SQL for relational databases, PromQL for Prometheus, or InfluxQL for InfluxDB. Grafana’s flexibility allows users to customize their queries to obtain specific information, facilitating analysis and data-driven decision-making. Additionally, queries can include aggregation, filtering, and transformation functions, enabling users to tailor the visualization to their particular needs. In summary, the panel query is an essential component in creating effective dashboards in Grafana, as it determines the quality and relevance of the presented data.