============== Presto Console

.. contents:: :local: :backlinks: none :depth: 1

Overview

The Presto Console is a web-based UI that is included as part of a Presto server installation. To install Presto, see Installing Presto <../installation/deployment.html#installing-presto>_. For information about developing the Presto Console, see :doc:/develop/presto-console.

Configuration

The default port is 8080. To configure the Presto service to use a different port, edit the Presto coordinator node's config.properties file and change the configuration property http-server.http.port to use a different port number. For more information, see Config Properties <../installation/deployment.html#config-properties>_.

Open the Presto Console

After starting Presto, you can access the web UI at the default port 8080 using the following link in a browser:

.. code-block:: none

http://localhost:8080

.. figure:: ../images/presto_console.png :align: center

Query Viewer

Query Viewer displays a query's details on the Presto Console, including overview, query plans, stage performance, and splits. To access the Query Viewer using a web browser, add the path /ui/dev/index.html to your server IP and port number. For example:

.. code-block:: none

http://localhost:8080/ui/dev/index.html

Use the JSON tab on the Query Details page to export and save a query in JSON format.

.. figure:: ../images/query_details_json.png :align: center

Note: When a Presto server restarts, all the query information is reset.

With the JSON files, you can use the Query Viewer to view the query details.

Access the Query Viewer page. For example: http://localhost:8080/ui/dev/index.html
Select the Browse button and select the JSON file you want to examine. The query information is displayed.
Select the Browse button to view other JSON files if needed.