Configure Magento 2 Rabbitmq + Elasticsearch

Job ID: 30922478

Budget: $10 – $30 USD

>>> Budget $30 <<< Using a dedicated server.

Rabbitmq and Elasticsearch are already installed on server but need to be configured for 3 sites.

1. Install latest Elasticsearch and configured for each site.
:: Elasticsearch shows in Magento Admin Catalog Search

2. Install latest Rabbitmq and configure for each site and provide:
a. username
b. password
c. port

3. Explain the function of env.php to me and what is the proper file.
Related categories: Elasticsearch Magento 2