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How to run Multiple Instances of Elasticsearch on Single Node

I have found some answers to this question on StackOverflow but those are a bit old. I need to configure multiple instances with the latest version (7.9.3) of elasticsearch and couldn't find any answers which are compatible with that.

Step 01

Set environment variable on windows

ES_HOME = ../elasticsearch

ES_PATH_CONF = ../elastcisearch/config

Step 02

created elasticsearch_1.yml and elastcsearch_2.yml config files

Steo 03

run the elasticsearch.bat with the config file

 bin/elasticsearch -Des.config=$ES_HOME/config/elasticsearch.1.yml

then the following error will be thrown

  ERROR: D is not a recognized option

Note - I know that the above approach is a bit old and how to do the above steps with the current (7.9) version

Solution

  • No need to give -D option and don't create two config file in a single ES installation folder.

    Instead, just change the elasticsearch.config in two ES installation folder and run them on separate ports.

    ES-1 elasticsearch.config

    http.port: 9200

    ES-2 elasticsearch.config

    http.port: 9500

    And after this, simply start both the node, one by one from using bin/elasticsearch command.