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[master] Update README.md to add JVM heap size #46

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[master] Update README.md to add JVM heap size #46

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11 changes: 11 additions & 0 deletions README.md
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Expand Up @@ -232,6 +232,17 @@ If you want to use different Elastic Stack versions, you can change those as wel
- [Kibana](https://hub.docker.com/r/elastic/kibana/tags?page=1&ordering=last_updated)
- [Elastic-Agent](https://hub.docker.com/r/elastic/elastic-agent/tags?page=1&ordering=last_updated)

### Increase JVM Heap Size

The default heap size is 512M which may be insufficent in some cases. In that case we can change the heap size by editing `docker-compose.yml` and passing `ES_JAVA_OPTS` environment variable to elasticsearch container.

```yml
elasticsearch:
...
environment:
+ - ES_JAVA_OPTS=-Xmx1g -Xms1g
```

## Automating

To enroll an Agent you will need the enrollment token.
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