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---
layout: default
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title: Data streams
parent: Index management in Dashboards
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nav_order: 20
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redirect_from:
- /dashboards/admin-ui-index/datastream/
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- /opensearch/data-streams/
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---
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# Data streams
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Introduced 2.6
{: .label .label-purple }
In OpenSearch Dashboards, the **Index Management** application allows you to view and manage [data streams ]({{site.url}}{{site.baseurl}}/opensearch/data-streams/ ) as shown in the following image.
## Viewing a data stream
To view a data stream and its health status, choose **Data streams** under **Index management** as shown in the following image.
The following are the three data stream health statuses:
- Green: All primary and replica shards are assigned.
- Yellow: At least one replica shard is not assigned.
- Red: At least one primary shard is not assigned.
## Creating a data stream
To create a data stream, perform the following steps:
1. Under **Index Management** , choose **Data streams** .
1. Choose **Create data stream** .
1. Enter a name for the data stream under **Data stream name** .
1. Ensure that you have a matching index template. This will be populated under **Matching index template** , as shown in the following image.
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1. The **Inherited settings from template** and **Index alias** sections are read-only, and display the backing indexes that are contained in the data stream.
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1. The number of primary shards, number of replicas, and the refresh interval are inherited from the template, as shown in the following image.
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1. Choose **Create data stream** .
## Deleting a data stream
To delete a data stream, perform the following steps:
1. Under **Index Management** , choose **Data streams** .
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1. Select the data stream that you want to delete.
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1. Choose **Actions** , and then choose **Delete** .
## Rolling over a data stream
To perform a rollover operation on a data stream, perform the following steps:
1. Under **Index Management** , choose **Data streams** .
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1. Choose **Actions** , and then choose **Roll over** , as shown in the following image.
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1. Under **Configure source** , select the source data stream on which you want to perform the rollover operation.
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1. Choose **Roll over** , as shown in the following image.
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## Force merging data streams
To perform a force merge operation on two or more indexes, perform the following steps:
1. Under **Index Management** , choose **Data streams** .
1. Select the data streams on which you want to perform the force merge operation.
1. Choose **Actions** , and then choose **Force merge** .
1. Under **Configure source index** , specify the data streams you want to force merge.
1. Optionally, under **Advanced settings** you can to choose to **Flush indices** or **Only expunge delete** and then specify the **Max number of segments** to merge to as shown in the following image.
