Grafana variables

Grafana variables

Learn about Grafana the monitoring solution for every database. Open Source is at the heart of what we do at Grafana Labs. Variables allows for more interactive and dynamic dashboards. Instead of hard-coding things like server, application and sensor name in your metric queries you can use variables in their place.

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Variables are shown as dropdown select boxes at the top of the dashboard. These dropdowns make it easy to change the data being displayed in your dashboard. A variable is a placeholder for a value. You can use variables in metric queries and in panel titles.

Why two ways? The first syntax is easier to read and write but does not allow you to use a variable in the middle of word. Use the second syntax in expressions like my. Before queries are sent to your data source the query is interpolatedmeaning 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 article for details on value escaping during interpolation. The formatting of the variable interpolation depends on the data source but there are some situations where you might want to change the default formatting.

For example, the default for the MySql data source is to join multiple values as comma-separated with quotes: 'server01','server02'. In some cases you might want to have a comma-separated string without quotes: server01,server This is now possible with the advanced formatting options. Formats single- and multi-valued variables into a comma-separated string, escapes ' in each value by '' and quotes each value with '.

Test the formatting options on the Grafana Play site. A variable is presented as a dropdown select box at the top of the dashboard. It has a current value and a set of options.

The options is the set of values you can choose from. This opens up a list of variables and a New button to create a new variable. This variable type is the most powerful and complex as it can dynamically fetch its options using a data source query. Using the Regex Query Option, you filter the list of options returned by the Variable query or modify the options returned. One thing to note is that query expressions can contain references to other variables and in effect create linked variables.

Interpolating a variable with multiple values selected is tricky as it is not straight forward how to format the multiple values to into a string that is valid in the given context where the variable is used. Grafana tries to solve this by allowing each data source plugin to inform the templating interpolation engine what format to use for multiple values.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

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Grafana Template and Repeat Demo (with InfluxDB)

Sign in to your account. Imagine the following two variable dropdowns, for Vehicle Type and Vehicle with the following queries.

However, that would require a directed graph, where variables are explicitly derived from other variables. Grafana would have to know that Vehicle is explicitly derived from Vehicle Type. Currently, that is not how Grafana works.

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Grafana considers variables as completely isolated from one another. That way, when a parent variable is updated, all of its children can update their results based on the new selected parent value. The only requirement is that parents needs to be defined first in the list of template variables. I had taken several attempts but they did not seem to work, which is why I opened the ticket. I will try again, sorry for the unnecessary ticket. Whereas I am using the variable outside of a series body in a where clause show tag values from "application.

Not sure if this is related, but the queries in the samples seem to be using an older templating variable module than what is currently in master. It does not matter where you use the template variableit is just string substitution.

Check the query being issued to InfluxDB. Yes, templating as been given a big update on 2. If I can find actual conclusive evidence to what is causing the problem, I will let you know. For now it makes sense to keep the ticket closed. Added fix for template variables when no options are available to select. Bug: New template variable select dropdown and cascading update.Learn about Grafana the monitoring solution for every database. Open Source is at the heart of what we do at Grafana Labs.

If you are running Grafana in a Docker image, then you configure Grafana using environment variables rather than directly editing the configuration file. If you want to save your data, then you also need to designate persistent storage or bind mounts for the Grafana container. If you do not designate a location for information storage, then all your Grafana data disappears as soon as you stop your image.

To save your data, you need to set up persistent storage or bind mounts for your container. You may want to run Grafana in Docker but use folders on your host for the database or configuration. When doing so, it becomes important to start the container with a user that is able to access and write to the folder you map into the container.

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Open Source is at the heart of what we do at Grafana Labs. Grafana allows you to query, visualize, alert on and understand your metrics no matter where they are stored.

Create, explore, and share dashboards with your team and foster a data driven culture. From heatmaps to histograms. Graphs to geomaps. Grafana has a plethora of visualization options to help you understand your data, beautifully. Read more. Define thresholds visually, and get notified via Slack, PagerDuty, and more. Bring your data together to get better context. Grafana supports dozens of databases, natively. Mix them together in the same Dashboard. Grafana gives you options.

Use Hosted Grafanaor easily install on any platform. Discover hundreds of dashboards and plugins in the official library. Thanks to the passion and momentum of our community, new ones are added every week.

Bring everyone together, and share data and dashboards across teams. Grafana empowers users, and helps foster a data driven culture. Grafana supports over 30 open source and commercial data sources. Pull together your data wherever it lives, and build the perfect dashboard. Grafana includes a built in Graphite query parser that takes writing graphite metric expressions to a whole new level.

Expressions are easier to read and faster to edit than ever. Beside the plugins that ship with Grafana we provide an extensive set of data source plugins via our Plugin Repository. However your company handles auth, Grafana makes it work easily with your existing workflow. Rolling Grafana into your offering?

Prefer the look of your own logo? Officially brand your Grafana instance. Grafana includes power user preferences including the option to select from dark or white themes, set your home dashboard, change timezones and more. Fast and flexible visualizations with a multitude of options allow you to visualize your data any way you want.

Explore your data through ad-hoc queries and dynamic drilldown. Split view and compare different time ranges, queries and data sources side by side. Experience the magic of switching from metrics to logs with preserved label filters. Quickly search through all your logs or streaming them live. Works best with our Loki data source but support for more are coming very soon. Visually define alert rules for your most important metrics.

Mix different data sources in the same graph!You can use template variables for creating highly reusable and interactive dashboards. General idea of templating is allow Grafana to get different metrics from data source and provide a way to change it on the fly without modifying dashboard. In case of Zabbix it means that you can get list of Host Groups, Hosts, Applications or Items and add it as a variables.

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To create template variable click the cog icon on the top navigation bar and choose Templating. When you click New button, you'll see template variable editor. It contains these sections:. Label Visible label for variable. Use when you want to display different name on dashboard. Type By default Query type is selected. It means that Grafana asks data source for values of variable. But there are some other types: Interval just a time intervalData source You can switch data source, for example, if you have more than one Zabbix instance and each added into Grafana as data sourceCustom you can set any predefined values for variable and Constant.

Multi-value Enable, if you want to select multiple values at the same time. You still can use a period. You can use another variable as a part of query. For instance, you have variable groupwhich returns list of host groups and want to use it for querying hosts in selected group only. Here's a query for this case:. When you create a variable, you can use it as a part of data source query. Grafana also supports variables in different places like panel's and row's titles, Text panel's content, etc.

See more about templating in Grafana docs. Grafana-Zabbix Documentation. Templating Guide You can use template variables for creating highly reusable and interactive dashboards. Creating Variable To create template variable click the cog icon on the top navigation bar and choose Templating.

It contains these sections: Variable Name Name of the variable. You should use this name in queries. Query Options Data source Data source used for querying variable values. Refresh When to update the values of this variable. Query Query string. Regex Use regex if you need to filter values or extract a part of value. Selection Options Multi-value Enable, if you want to select multiple values at the same time.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. How to add two datasources in Grafana template variables? I want to pull data from two data sources from two different graphite servers using template variables.

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Current grafana version is 2. I hope you use the real current Grafana Version, which is 5. When you create a Variable you can select a Datasource, given that you created it beforehand. The Query for the Variable will then go to the specified Datasource. After creating the Variable you can use it in the Dashboard.

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If you want to use different Datasources for your Panels you can either create two Panels with different Datasources or use the "mixed" option to use different Datasources in one Panel. You will have to add additional variables for each datasource, as one variable can only point to one datasource.

Learn more. Ask Question. Asked 1 year, 6 months ago. Active yesterday. Viewed 1k times. Vishal Bhosale Vishal Bhosale 51 7 7 bronze badges. I recommend updating your old Grafana - current release is 5.

Active Oldest Votes. Mohsin Kamal Mohsin Kamal 63 8 8 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.

Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Programming tutorials can be a real drag.Learn about Grafana the monitoring solution for every database.

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Open Source is at the heart of what we do at Grafana Labs. ClickHouse datasource plugin provides a support for ClickHouse as a backend database. Install from grafana. Copy files to your Grafana plugin directory. Using of CHProxy will bring additional features:. Hint - if you need to cache requests like last 24h where timestamp changes constantly then try to use Round option at Raw Editor. First row FROM contains two options: database and table.

Table values depends on selected database. Second row contains selectors for time filtering:. Column:DateTime or Column:TimeStamp are required for time-based macros and functions, because all analytics is based on these values. Raw Editor allows to type queries, get info about functions and macroses, format queries as Clickhouse do. Under the Editor you can find a raw query all macros and functions have already been replaced which will be sent directly to ClickHouse.

If some additional complexity is needed - just copy raw sql into Raw Editor and make according changes. Remember that macros are still available to use. If you add a template variable of the type Queryyou can write a ClickHouse query that can return things like measurement names, key names or key values that are shown as a dropdown select box.

For example, you can have a variable that contains all values for the hostname column in a table if you specify a query like this in the templating variable Query setting. The options in the dropdown will have a text and value that allows you to have a friendly name as text and an id as the value. An example query with hostname as the text and id as the value:.

You can also create nested variables. For example if you had another variable named region. If you are using templating to feed your predicateyou will face performance degradation when everything is selected as the predicate is not necessary.

It's also true for textbox when nothing is enteryou have to write specific sql code to handle that. If the variable is type query with all selected or if the variable is a textbox with nothing enterthen the SQL Predicate is not included in the generated query. To create "Top 5" diagram we will need two queries: one for 'Top 5' rows and one for 'Other' row.

There are no any tricks in displaying time-series data. To print summary data, omit time column, and format the result as "Table". If you are using geohash set following options:.

If there is an Ad-hoc variable, plugin will fetch all columns of all tables of all databases except system database as tags.

grafana variables

So in dropdown menu will be options like database. If the default database is specified, it will only fetch tables and columns from that database, and the dropdown menu will have option like table.

If there are ENUM columns, plugin will fetch their options and use them as tag values. If the ad-hoc filter doesn't specify table, it will apply to all queries regardless of the table.

This is useful if the dashboard contains queries to multiple different tables.

grafana variables

There may be cases when CH contains too many tables and columns so their fetching could take notably amount of time.


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