Index data from mongo to Elasticsearch

Elastic Stack Elasticsearch
1

Hello guys , i am indexing existing data of mongodb to elasticsearch. using mongoosastic plugin by .synchronize() method which is taking lot of time.
Are there any ways that i could index all existing data(which contains around 1-2 millions documents) from mongodb to elastic .Please help me out.

2

I've moved your post to a new topic given it wasn't related to the previous topic you posted in.

3

But this is a duplicate of Migrating data(which already exists) from Mongodb to elasticsearch.