How to create multiple node in one cluster

I have tried to create 3 nodes in my ES for "production", "development", "testing" using command:
bin/elasticsearch -Epath.logs=log1
My elasticsearch.yml file located at admin:///etc/elasticsearch and getting error as:
bash: bin/elasticsearch: No such file or directory

Besides, I also tried modifying elasticsearch.yml file following StackOverflow answers but failed.

  1. How to add a new node to my Elasticsearch cluster
  2. Multiple nodes in ElasticSearch

But I can not create separate nodes. My purpose is to test my application separately so that it doesn't affect the main node.
Here are respentive lines of my elasticsearch.yml file: : scidatamanager : "dev" : "test"
node.master: true false
http.port: 9200 false [""] : scidatamanager : "test"
node.master: false true
http.port: 9201 false [""] /var/lib/elasticsearch
path.logs: /var/log/elasticsearch

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