title: How much cpu/memory/storage at least I need to use ELK
body: <p>Our project has requirement for log aggregation of different micro-services, and ELK is great tool to do that. However our project has requirement of privatization deployment, which means we need to deploy the whole solution into customers' own servers. Based on this video(<a href="https://www.youtube.com/watch?v=cC4GGJ0JsSE" rel="nofollow noreferrer">https://www.youtube.com/watch?v=cC4GGJ0JsSE</a>), ELK has pre-requisites of at least 2GB RAM and at least 20GB storage, is this always the situation? If yes, then ELK is a little resource consuming, which may not quite fit to our privatization deployment situation. Create this issue and would like to get advise and suggestion about whether I should choose ELK for privatization deployment scenario for log aggregation.</p>