Elasticsearch get index names

They are not intended for use by applications.

There are multiple ways to list all of the indexes contained in an Elasticsearch cluster. The Elasticsearch list indexes tutorial will explain how to connect to Elasticsearch and list the indexes stored on a cluster. Note that the methods that will be covered in this tutorial can be used on a Windows, Mac or Linux system. A stable version of Elasticsearch, that still provides long-term support, or LTS, must be installed on the local system to have Elasticsearch list indexes. Note that Elasticsearch v7.

Elasticsearch get index names

Many candidates are rejected or down-leveled due to poor performance in their System Design Interview. Stand out in System Design Interviews and get hired in with this popular free course. Elasticsearch , a powerful distributed search engine, plays a crucial role in modern applications for its ability to efficiently store and retrieve vast amounts of data. When working with Elasticsearch, administrators often need to monitor and manage the cluster, including obtaining essential information about its indices. Regardless of the method we choose, the response will include information about all the indexes in our Elasticsearch cluster, such as their names, document counts, storage sizes, and more. The v parameter in the URL enables a verbose output that includes column headers for better readability. The output of the code to list all the indexes in Elasticsearch will be a tabular representation of the indices, including their names and various metadata. The output will look similar to the following:. Each row represents an index, and the columns provide different information about the indexes, including:. Indices are collections of similar documents in Elasticsearch, while shards are smaller units that divide an index, allowing for distributed storage and scalability.

Note that the above JSON response contains vital information about the Elasticsearch installation and cluster. With Elasticsearch installed and the cluster working properly, execute the curl localhost command in a terminal or command-prompt window to obtain a JSON response that should resemble following:. Elasticsearch indexes, elasticsearch get index names.

In Elasticsearch, an index plural: indices contains a schema and can have one or more shards and replicas. An Elasticsearch index is divided into shards and each shard is an instance of a Lucene index. Indices are used to store the documents in dedicated data structures corresponding to the data type of fields. For example, text fields are stored inside an inverted index whereas numeric and geo fields are stored inside BKD trees. The following example is based on Elasticsearch version 5. All the index names and their basic information can be retrieved using the following command:. It is possible to search multiple indices with a single request.

Efficient management of Elasticsearch indices is crucial for maintaining optimal performance and ensuring the smooth functioning of your Elasticsearch environment. In this article, we will discuss some best practices and techniques for managing your Elasticsearch index list. Index templates are a powerful way to ensure consistent settings across multiple indices. They allow you to define settings, mappings, and aliases that will be applied automatically to new indices matching a specified pattern. To create an index template, use the following API call:. Index Lifecycle Management ILM is a feature that allows you to automate the management of indices based on their age and performance. ILM policies can be used to perform actions such as rollover, shrink, force merge, and delete indices when specific conditions are met. Regularly monitoring index performance is essential for identifying potential issues and optimizing resource usage. Key performance metrics to monitor include query latency, indexing rate, and resource utilization.

Elasticsearch get index names

There are multiple ways to list all of the indexes contained in an Elasticsearch cluster. The Elasticsearch list indexes tutorial will explain how to connect to Elasticsearch and list the indexes stored on a cluster. Note that the methods that will be covered in this tutorial can be used on a Windows, Mac or Linux system. A stable version of Elasticsearch, that still provides long-term support, or LTS, must be installed on the local system to have Elasticsearch list indexes.

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With Elasticsearch installed and the cluster working properly, execute the curl localhost command in a terminal or command-prompt window to obtain a JSON response that should resemble following:. Remember that the request URL must be enclosed in quotation marks whenever options like? Skill Paths Achieve learning goals. Log In Join for free. Terms of Service. If the Elasticsearch security features are enabled, you must have the monitor or manage cluster privilege to use this API. Let us improve this post! The use of the -X option is often unnecessary in newer versions of cURL. Blog For developers, By developers. How to list all the indexes in Elasticsearch. Top warming has been interrupted. Skip this section if Elasticsearch is already installed. Prerequisites edit. Privacy Policy.

You use GET to retrieve a document and its source or stored fields from a particular index. Use HEAD to verify that a document exists.

Data Science. Elasticsearch supports wildcard patterns in Index names, which sometimes aids with querying multiple indices, but can also be very destructive too. Early Access Courses. GitHub Students Scholarship. Each row represents an index, and the columns provide different information about the indexes, including: health : The health status of the index green, yellow, or red. The repositories should always be update, using the following command, before any packages are installed on Ubuntu:. Skill Paths Achieve learning goals. Stand out in System Design Interviews and get hired in with this popular free course. Prerequisites edit. Stop throttling indexing for shard. Related Topics:.