[es] Add note about increasing mmap count

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Geoff Bourne 2017-01-04 20:43:23 -06:00
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This Docker image provides an easily configurable Elasticsearch node. Via port mappings, it is easy to create an arbitrarily sized cluster of nodes. As long as the versions match, you can mix-and-match "real" Elasticsearch nodes with container-ized ones.
# NOTE for use on Linux hosts
Elasticsearch 5.x requires that the virtual memory mmap count is set sufficiently for stable,
production use. [Refer to this guide for more information](https://www.elastic.co/guide/en/elasticsearch/reference/current/vm-max-map-count.html).
# Basic Usage
To start an Elasticsearch data node that listens on the standard ports on your host's network interface: