Administrating Your Cluster | Elasticsearch Server: Second Edition

Sign In Start Free Trial

Book Overview & Buying
Table Of Contents
Feedback & Rating

Elasticsearch Server: Second Edition

4.3 (13)

Elasticsearch Server: Second Edition

4.3 (13)

Overview of this book

Elasticsearch Server Second Edition

Elasticsearch Server Second Edition

Credits

Credits

About the Author

About the Author

Acknowledgments

Acknowledgments

About the Author

About the Author

Acknowledgments

Acknowledgments

About the Reviewers

About the Reviewers

www.PacktPub.com

www.PacktPub.com

Preface

Preface

Free Chapter

Getting Started with the Elasticsearch Cluster

Getting Started with the Elasticsearch Cluster

Full-text searching

The basics of Elasticsearch

Installing and configuring your cluster

Manipulating data with the REST API

Searching with the URI request query

Summary

Indexing Your Data

Indexing Your Data

Elasticsearch indexing

Mappings configuration

Batch indexing to speed up your indexing process

Extending your index structure with additional internal information

Introduction to segment merging

Introduction to routing

Summary

Searching Your Data

Searching Your Data

Querying Elasticsearch

Understanding the querying process

Basic queries

Compound queries

Filtering your results

Highlighting

Validating your queries

Sorting data

Query rewrite

Summary

Extending Your Index Structure

Extending Your Index Structure

Indexing tree-like structures

Indexing data that is not flat

Using nested objects

Using the parent-child relationship

Modifying your index structure with the update API

Summary

Make Your Search Better

Make Your Search Better

An introduction to Apache Lucene scoring

Scripting capabilities of Elasticsearch

Searching content in different languages

Influencing scores with query boosts

When does index-time boosting make sense?

Words with the same meaning

Understanding the explain information

Summary

Beyond Full-text Searching

Beyond Full-text Searching

Aggregations

Faceting

Using suggesters

Percolator

Handling files

Geo

The scroll API

The terms filter

Summary

Elasticsearch Cluster in Detail

Elasticsearch Cluster in Detail

Node discovery

The gateway and recovery modules

Preparing Elasticsearch cluster for high query and indexing throughput

Templates and dynamic templates

Summary

Administrating Your Cluster

Administrating Your Cluster

The Elasticsearch time machine

Monitoring your cluster's state and health

Controlling cluster rebalancing

Controlling the shard and replica allocation

Warming up

Index aliasing and using it to simplify your everyday work

Elasticsearch plugins

The update settings API

Summary

Index

Index

Customer Reviews

4.3 (13)

5 star

53.8%

4 star

23.1%

3 star

23.1%

2 star

0%

1 star

0%

The update settings API

Elasticsearch lets us tune it by specifying various parameters in the elasticsearch.yml file. But you should treat this file as the set of default values that can be changed in the runtime using the Elasticsearch REST API.

In order to set one of the properties, we need to use the HTTP PUT method and send a proper request to the _cluster/settings URI. However, we have two options: transient and permanent property settings.

The first one, transient, will set the property only until the first restart. In order to do this, we will send the following command:

curl -XPUT 'localhost:9200/_cluster/settings' -d '{
  "transient" : {
    "PROPERTY_NAME" : "PROPERTY_VALUE"
  }
}'

As you can see, in the preceding command, we used the object named transient and we added our property definition there. This means that the property will be valid only until the restart. If we want our property settings to persist between restarts, instead of using the object named transient, we will...

Visually different images

CONTINUE READING

83

Tech Concepts

36

Programming languages

73

Tech Tools

Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.

Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.

50+ new titles added per month and exclusive early access to books as they are being written.

Elasticsearch Server: Second Edition

Search

Your notes and bookmarks