Before deploying Elasticsearch, ensure that the Java Development Kit (JDK) is installed and the JAVA_HOME environment variable is correctly configured. Once the environment is ready, download the Elasticsearch Windows distribution and extract it to your preferred directory.

Starting the Service

Navigate to the bin directory within the extracted folder and execute the batch file to start the node:

cd C:\elasticsearch-7.5.0\bin
elasticsearch.bat

Once the initialization is complete, verify the node is running by accessing the default endpoint in your web browser:

http://localhost:9200/

Indexing a Document

To add a new record (document) to an index named films with a specific ID, use the following curl command. Note that JSON data passed in the command line requires double quotes to be escaped with a backslash (\).

curl -H "Content-Type: application/json" -XPUT "http://localhost:9200/films/drama/1" -d "{\"title\": \"The Godfather\",\"director\":\"Francis Ford Coppola\",\"year\": 1972}"

Retrieving a Document

To fetch the document created above using its ID:

curl -H "Content-Type: application/json" -XGET "http://localhost:9200/films/drama/1"

Deleting a Document

To remove a document from the index:

curl -XDELETE "http://localhost:9200/films/drama/1"

Search Operations

You can query data across the entire cluster or specific scopes using the _search API.

Search all indices:

curl -XGET "http://localhost:9200/_search"

Search within a speciifc index:

curl -XGET "http://localhost:9200/films/_search"

Search within a specific index and type:

curl -XGET "http://localhost:9200/films/drama/_search"

Troubleshooting Common Errors

• Error 406: Content-Type header [application/x-www-form-urlencoded] is not supported
  Solution: Ensure you include the header -H "Content-Type: application/json" in your curl request.
• Error 400: mapper_parsing_exception / Unexpected end-of-input
  Solution: This usually occurs because double quotes inside the JSON payload are not escaped. Ensure every internal quote is prefixed with a backslash (e.g., \"title\").

Cluster and Index Monitoring

Check the health status of the cluster:

http://localhost:9200/_cat/health?v

List all existing indices in the cluster:

http://localhost:9200/_cat/indices?v