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Use Grafana variables with TimescaleDB. Click 'Add' to save your variable. Use the variable in a Grafana panel. Let's edit the WorldMap panel we created in the Grafana geo-spatial queries tutorial. The first thing you'll notice is that now that we've defined a variable for this dashboard, there's now a drop-down for that variable in the upper left hand corner of the panel.

Query variables allow 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.

Apr 20, 2020 · To create a new variable, go to your Grafana dashboard settings, navigate to the Variable option in the side-menu, and then click the Add variable button. In this case, we use the Query type, where our variable will be defined as the result of an SQL query. How to create a variable of type Query. Under the General section, we name our variable ...

Dec 23, 2020 · By clicking on the information (i) button next to the Interval label, we see that Grafana supplies this value through a variable;$__interval; We can use this variable in our Prometheus query; rate(apache_accesses_total{instance="apache-exporter:9117", job="apache"}[$__interval]) Alerts

Here's an example in Grafana, an open-source visualization tool, ... to use variables in Grafana dashboards, powered by PostgreSQL queries?

This page contains links to dashboards in Grafana Play with examples of template variables. Elasticsearch Metrics - Uses ad hoc filters, global variables, and a custom variable. Graphite Templated Nested - Uses query variables, chained query variables, an interval variable, and a repeated panel. Influx DB Group By Variable - Query variable, panel uses the variable results to group the metric data.

20.05.2020 · To create a new variable, go to your Grafana dashboard settings, navigate to the Variable option in the side-menu, and then click the Add variable button. In …

Grafana automatically calculates an appropriate interval and it can be used as a variable in templated queries. The variable is either in seconds: $__interval or in milliseconds: $__interval_ms. It is typically used in aggregation functions like sum or average. For example, a Prometheus query using the interval variable: rate (http_requests ...

Query variables allow 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 ...

We will create the variables using the Data sources set up in all the previous lessons. Example Variables. Name, Type, DataSource, Value/Query. interval ...

You can learn more about templates and variables in the Grafana ... Make sure the Type is set to Query, and then set your Cognite Data ...

20.04.2020 · Grafana renders a handy preview of what values of "route" will be down in the drop down menu Step 2: Modify your graph query to use your new variable. In this step, we modify our query to use the variable we created in Step 1. For a SQL query, we do this by modifying the WHERE clause to filter out undesirable results.

Variable examples. This page contains links to dashboards in Grafana Play with examples of template variables. Elasticsearch Metrics - Uses ad hoc filters, global variables, and a custom variable.; Graphite Templated Nested - Uses query variables, chained query variables, an interval variable, and a repeated panel.; Influx DB Group By Variable - Query variable, panel uses the …

23.12.2020 · Grafana is open source visualization and analytics software. It allows you to query, visualize, alert on, and explore your metrics no matter where they are stored. In plain English, it provides you with tools to turn your time-series database (TSDB) data …

Here are two query examples: PostgreSQL. SELECT hostname FROM host WHERE region IN($region) PromQL. query_result(max_over_time(<metric>[${__range_s}s]) != <state>) For more information about writing a query for your data source, refer to the specific Grafana data source documentation. Query tab UI. The Query tab consists of the following elements:

Query variables are very similar to Custom variables, but with an advantage: we can retrieve the values that will be listed from a data source.