Elasticsearch Setup for Shared Host Multiple Magento Clients

Hi,
I have a whm / cpanel server with around 20 Magento clients and at least 5 of them will move to Magento 2.4. What is the best way to install Elasticsearch and then divide it so multiple clients can use it? I do not have the option of making a separate isolated container for each client, so it must be a shared type solution.