Grafana variable

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Rate your experience required. Comments required. Before queries are sent to your data source the query is interpolated , meaning the variable is replaced with its current value. During interpolation, the variable value might be escaped in order to conform to the syntax of the query language and where it is used. For example, a variable used in a regex expression in an InfluxDB or Prometheus query will be regex escaped. Read the data source specific documentation topic for details on value escaping during interpolation. For advanced syntax to override data source default formatting, refer to Advanced variable format options.

Grafana variable

Rate your experience required. Comments required. Navigate to the dashboard you want to make a variable for and click the Dashboard settings gear icon at the top of the page. Query variables enable you to write a data source query that can return a list of metric names, tag values, or keys. For example, a query variable might return a list of server names, sensor IDs, or data centers. The variable values change as they dynamically fetch options with a data source query. Query variables are generally only supported for strings. If your query returns numbers or any other data type, you might need to convert them to strings in order to use them as variables. For the Azure data source, for example, you can use the tostring function for this purpose. Query expressions can contain references to other variables and in effect create linked variables. Grafana detects this and automatically refreshes a variable when one of its linked variables change. Note: Query expressions are different for each data source.

Grafana Enterprise Metrics, grafana variable. Note The Custom all value option on the variable must be blank for Grafana to format all values into a single string.

I thought that what I was trying to do was going to be quite straightforward, but I cannot figure it out to save my life. The user selects the proper value for the dashboard. But I cannot figure out how to reference the value url3. I have searched and searched, and tried every combination of variables and formats that I can come up with, but have yet to come up with the magic sauce. Is this possible?

After a brief acquaintance with Grafana in sandboxes, production application developers come to the need to work with variables serving different architectural levels. This article outlines three logical levels with corresponding variables and their purposes. Dashboard variables serve the analytical dashboards, and global Grafana variables rule in the Grafana instance. Environment variables help in configuring system processes where Grafana is installed. As the name implies, they are created for a dashboard. Only users with Edit permissions or higher can maintain them. The dashboard variables configuration menu is located in the Dashboard settings, Variables menu. Once a variable is created, it is displayed on the top of your dashboard as a drop-down list unless you made it hidden. Multi-selection and Select All are optional and configurable in the Variable management panel. Most of the time a dashboard variable plays a filter role to limit the displayed data on your panels.

Grafana variable

This documentation topic is designed for Grafana workspaces that support Grafana version 8. For Grafana workspaces that support Grafana version 9. Using query variables, you can write a data source query that returns a list of metric names, tag values, or keys.

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Troubleshooting Send panel to support. Upgrade to v8. Grafana Com OAuth2. It also allows you to inspect variables and identify whether a variable is being referenced or used in other variables or dashboard. Enable alerting high availability. The query returns all servers associated with America , including server1 , server2 , and so on. State timeline. Tempo Configure Tempo. You can also click Open advanced data source picker to see more options, including adding a data source Admins only. Bar gauge. And yes you can do that but you will run into some issues. Alerting on numeric data. Introduction to time series. Contribute to Grafana. Query expressions can contain references to other variables and in effect create linked variables.

Variables are a powerful feature in Grafana that allow you to create dynamic and interactive dashboards. By using variables, you can make your dashboards more flexible and easily adapt them to different scenarios without the need to modify each query or panel manually. In this tutorial, we will guide you through the process of effectively using variables and template variables in Grafana, exploring various variable types, use cases, and setting up template variables for enhanced data analysis and visualization.

They are useful if you have multiple instances of a data source, perhaps in different environments. Labels in Grafana Alerting. Get started with Grafana Open Source Build your first dashboard. Introduction What is Prometheus? Provision Grafana. Best practices. Configure security hardening. Now, you could make separate variables for each metric source, but then you have to know which server goes with which app. Node graph. Was this page helpful? Alert rules Alert rule types. Export alerting resources.