Summary

This context provides a comprehensive guide on setting up, installing, and configuring Elasticsearch on a Mac, including steps for changing the initial password and testing the installation, preparing for integration with a NestJS application.

Abstract

The provided text is a detailed tutorial on how to create a full autocomplete search application using Elasticsearch and NestJS. It begins with an introduction to Elasticsearch, describing it as a distributed, RESTful search and analytics engine capable of handling various use cases with simple installation and schema-free JSON documents. The guide then walks through the steps to download and extract Elasticsearch for Mac, configure the Elasticsearch node and cluster, start the Elasticsearch engine, change the default password, and verify the installation through a browser interface. It emphasizes the importance of secure password management and provides troubleshooting advice, encouraging readers to engage with the community or refer to the official documentation for further assistance. The article concludes by congratulating the reader on successfully setting up Elasticsearch and teases the next part of the series, which will cover connecting a NestJS application to Elasticsearch.

Opinions

The author positions Elasticsearch as a versatile and user-friendly search engine suitable for a wide range of applications.
The importance of proper configuration and security, particularly changing the default password, is highlighted as a critical step in the setup process.
The author offers a subjective reassurance that Elasticsearch's automated routing and load balancing capabilities make it reliable for managing multiple nodes in a cluster.
Engagement with the reader is encouraged through an invitation to comment on the article for assistance, suggesting a community-oriented approach.
The author expresses enthusiasm for the upcoming content in the series, indicating that the next steps will be valuable for readers looking to integrate Elasticsearch with a NestJS application.

How to Create a Full Autocomplete Search Application with Elasticsearch and NestJS

Part 1: How to setup Elasticsearch on your PC

Elasticsearch is a distributed, RESTful search and analytics engine that can handle an expanding range of use cases. It offers a full-text search engine with a multitenant capability, an HTTP web interface, and schema-free JSON documents, all with simple installation.

Elasticsearch is a search engine based on the Lucene library. It provides a distributed, multitenant-capable full-text search engine with an HTTP web interface and schema-free JSON documents. Read more

In this article, I will be walking you through how to setup elasticsearch on your PC.

How to setup, install and configure Elasticsearch for Mac

In order to download Elasticsearch, goto Elasticsearch Download Page, select the respective operating system and click on the download button as shown below:

After downloading, extract the compressed file using the command below

$ tar -xzvf elasticsearch-8.4.1-darwin-aarch64.tar.gz

Configuring Elasticsearch

After extracting elasticsearch, depending on your use case, you may want to configure elasticsearch to suit you. You can take a look at the config file using the command below:

$ vi elasticsearch-8.4.1/config/elasticsearch.yml

Cluster: You can have multiple nodes in your cluster, in order to do this, you need to ensure that the cluster name on your nodes matches.

# -------------------------------- Cluster ----------------------------------
#
# Use a descriptive name for your cluster:
#
cluster.name: air-elastic
#

Node: This is an identifier for the individual nodes in your cluster

# -------------------------------- Node ----------------------------------
#
# Use a descriptive name for your cluster:
#
node.name: airscholar-node
#

For other configurations, check elasticsearch.yml to fine tune the configs to suit your use case.

Starting up Elasticsearch

In order to start up elasticsearch engine use the command below:

$ bin/elasticsearch

When starting up elasticsearch for the first time, you will be presented with a password that needs to be changed

Changing your password for the first time

You should change your password after starting up the elasticsearch for the first time, of course, you can do that using this command:

bin/elasticsearch-reset-password -u elastic

NOTE: ENSURE YOU KEEP YOUR ELASTIC PASSWORD SAFE, IT WILL BE REQUIRED IN ORDER TO CONNECT TO ELASTICSEARCH

Testing Elasticsearch

In your browser, goto https://localhost:9200 or the specified hostname and port in your elasticonfig.yml. You will be asked for username (elastic) and password (the password you changed to when starting elasticsearch for the first time)

You should see something like this.

{
  "name" : "airscholar-node",
  "cluster_name" : "air-elastic",
  "cluster_uuid" : "7g3LmMYFRmyxTyR6ZI-b7A",
  "version" : {
    "number" : "8.4.1",
    "build_flavor" : "default",
    "build_type" : "tar",
    "build_hash" : "2bd229c8e56650b42e40992322a76e7914258f0c",
    "build_date" : "2022-08-26T12:11:43.232597118Z",
    "build_snapshot" : false,
    "lucene_version" : "9.3.0",
    "minimum_wire_compatibility_version" : "7.17.0",
    "minimum_index_compatibility_version" : "7.0.0"
  },
  "tagline" : "You Know, for Search"
}

If you have any challenge setting up elasticsearch, feel free to drop a comment, I will try to respond. You can also check official elasticsearch documentation for a more detailed information about elasticsearch.

Summary

Congratulations our elasticsearch guru, you made it! 😊

Now that elasticsearch is up and running, your Elasticsearch node should be completely functional. The process is pretty much the same if you have multiple nodes and you do not have to worry about the nodes in your cluster because elasticsearch fully supports automated routing and load balancing.

Thanks for reading!

In the next article, I will walk you through how to setup and connect your NestJs application with Elasticsearch. Stay tuned!

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