Data streams

    In OpenSearch Dashboards, the Index Management application allows you to view and manage data streams as shown in the following image.

    To view a data stream and its health status, choose Data streams under Index management as shown in the following image.

    Data Streams

    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.

    To create a data stream, perform the following steps:

    1. Choose Create data stream.

    2. Enter a name for the data stream under Data stream name.

    3. Ensure that you have a matching index template. This will be populated under Matching index template, as shown in the following image.

    4. The Inherited settings from template and Index alias sections are read-only, and display the backing indexes that are contained in the data stream.

    5. The number of primary shards, number of replicas, and the refresh interval are inherited from the template, as shown in the following image.

    6. Choose Create data stream.

    To delete a data stream, perform the following steps:

    1. Under Index Management, choose Data streams.

    2. Select the data stream that you want to delete.

    To perform a rollover operation on a data stream, perform the following steps:

    1. Under Index Management, choose Data streams.

    2. Rollover

    3. Under Configure source, select the source data stream on which you want to perform the rollover operation.

    4. Choose Roll over, as shown in the following image.

    To perform a force merge operation on two or more indexes, perform the following steps:

    1. Under Index Management, choose Data streams.

    2. Select the data streams on which you want to perform the force merge operation.

    3. Choose Actions, and then choose Force merge.

    4. Under Configure source index, specify the data streams you want to force merge.