+++
title = "Using Elasticsearch in Grafana"
description = "Guide for using Elasticsearch in Grafana"
keywords = ["grafana", "elasticsearch", "guide"]
type = "docs"
aliases = ["/datasources/elasticsearch"]
[menu.docs]
name = "Elasticsearch"
parent = "datasources"
weight = 3
+++

# Using Elasticsearch in Grafana

Grafana ships with advanced support for Elasticsearch. You can do many types of simple or complex Elasticsearch queries to
visualize logs or metrics stored in Elasticsearch. You can also annotate your graphs with log events stored in Elasticsearch.

## Adding the data source

1. Open the side menu by clicking the Grafana icon in the top header.
2. In the side menu under the `Dashboards` link you should find a link named `Data Sources`.
3. Click the `+ Add data source` button in the top header.
4. Select *Elasticsearch* from the *Type* dropdown.

> NOTE: If you're not seeing the `Data Sources` link in your side menu it means that your current user does not have the `Admin` role for the current organization.

Name | Description
------------ | -------------
*Name* | The data source name. This is how you refer to the data source in panels & queries.
*Default* | Default data source means that it will be pre-selected for new panels.
*Url* | The HTTP protocol, IP, and port of your Elasticsearch server.
*Access* | Proxy = access via Grafana backend, Direct = access directly from browser.

Proxy access means that the Grafana backend will proxy all requests from the browser, and send them on to the Data Source. This is useful because it can eliminate CORS (Cross Origin Site Resource) issues, as well as eliminate the need to disseminate authentication to the browser.

### Direct access

If you select direct access you must update your Elasticsearch configuration to allow other domains to access
Elasticsearch from the browser. You do this by specifying these to options in your **elasticsearch.yml** config file.

```bash
http.cors.enabled: true
http.cors.allow-origin: "*"
```

### Index settings

![](/img/docs/elasticsearch/elasticsearch_ds_details.png)

Here you can specify a default for the `time field` and specify the name of your Elasticsearch index. You can use
a time pattern for the index name or a wildcard.

### Elasticsearch version

Be sure to specify your Elasticsearch version in the version selection dropdown. This is very important as there are differences how queries are composed. Currently only 2.x and 5.x
are supported.

## Metric Query editor

![](/img/docs/elasticsearch/query_editor.png)

The Elasticsearch query editor allows you to select multiple metrics and group by multiple terms or filters. Use the plus and minus icons to the right to add/remove
metrics or group by clauses. Some metrics and group by clauses haves options, click the option text to expand the row to view and edit metric or group by options.

## Series naming & alias patterns

You can control the name for time series via the `Alias` input field.

Pattern | Description
------------ | -------------
*{{term fieldname}}* |  replaced with value of a term group by
*{{metric}}* | replaced with metric name (ex. Average, Min, Max)
*{{field}}* | replaced with the metric field name

## Pipeline metrics

Some metric aggregations are called Pipeline aggregations, for example, *Moving Average* and *Derivative*. Elasticsearch pipeline metrics require another metric to be based on. Use the eye icon next to the metric to hide metrics from appearing in the graph. This is useful for metrics you only have in the query for use in a pipeline metric.

![](/img/docs/elasticsearch/pipeline_metrics_editor.png)

## Templating

Instead of hard-coding things like server, application and sensor name in you metric queries you can use variables in their place.
Variables are shown as dropdown select boxes at the top of the dashboard. These dropdowns makes it easy to change the data
being displayed in your dashboard.

Checkout the [Templating]({{< relref "reference/templating.md" >}}) documentation for an introduction to the templating feature and the different
types of template variables.

### Query variable

The Elasticsearch data source supports two types of queries you can use in the *Query* field of *Query* variables. The query is written using a custom JSON string.

Query | Description
------------ | -------------
*{"find": "fields", "type": "keyword"} | Returns a list of field names with the index type `keyword`.
*{"find": "terms", "field": "@hostname", "size": 1000}* |  Returns a list of values for a field using term aggregation. Query will user current dashboard time range as time range for query.
*{"find": "terms", "field": "@hostname", "query": '<lucene query>'}* | Returns a list of values for a field using term aggregation & and a specified lucene query filter. Query will use current dashboard time range as time range for query.

There is a default size limit of 500 on terms queries. Set the size property in your query to set a custom limit.
You can use other variables inside the query. Example query definition for a variable named `$host`.

```
{"find": "terms", "field": "@hostname", "query": "@source:$source"}
```

In the above example, we use another variable named `$source` inside the query definition. Whenever you change, via the dropdown, the current value of the ` $source` variable, it will trigger an update of the `$host` variable so it now only contains hostnames filtered by in this case the
`@source` document property.

### Using variables in queries

There are two syntaxes:

- `$<varname>`  Example: @hostname:$hostname
- `[[varname]]` Example: @hostname:[[hostname]]

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 a word. When the *Multi-value* or *Include all value*
options are enabled, Grafana converts the labels from plain text to a lucene compatible condition.

![](/img/docs/v43/elastic_templating_query.png)

In the above example, we have a lucene query that filters documents based on the `@hostname`  property using a variable named `$hostname`. It is also using
a variable in the *Terms* group by field input box. This allows you to use a variable to quickly change how the data is grouped.

Example dashboard:
[Elasticsearch Templated Dashboard](http://play.grafana.org/dashboard/db/elasticsearch-templated)

## Annotations

[Annotations]({{< relref "reference/annotations.md" >}}) allows you to overlay rich event information on top of graphs. You add annotation
queries via the Dashboard menu / Annotations view. Grafana can query any Elasticsearch index
for annotation events.

Name | Description
------------ | -------------
Query | You can leave the search query blank or specify a lucene query
Time | The name of the time field, needs to be date field.
Text | Event description field.
Tags | Optional field name to use for event tags (can be an array or a CSV string).
