The following tools and installations will be used in this chapter:
- Elasticsearch installation guide: https://www.elastic.co/guide/en/elasticsearch/reference/current/_installation.html
- XFS stripe size and Stripe unit "how to": http://xfs.org/index.php/XFS_FAQ#Q:_How_to_calculate_the_correct_sunit.2Cswidth_values_for_optimal_performance
- XFS write barriers: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/storage_administration_guide/writebarrieronoff
- Elasticsearch configuration details: https://www.elastic.co/guide/en/elasticsearch/reference/current/settings.html
- Avoiding a split brain in Elasticsearch: https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-node.html#split-brain
- Elasticsearch cluster state API: https://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-state.html
- Logstash...