es.md

Elasticsearch Options

1. Three master+data nodes

• Three r3.xlarge.elasticsearch nodes (4 cpu, 30G memory, 80G ssd)
• all serve as master and data nodes
• can't do multi availibility zones
  • aws es service is limited to 2 azs max so if you want to do multiple azs, node count needs to be even
• $1058 a month

2. Four master+data nodes

• same as above but use 4 nodes to get multiple azs
• this is vulnerable to split brain
• $1322 a month

3. Two data nodes, three master nodes

• Two r3.xlarge.elasticsearch data nodes (4 cpu, 30G memory, 80G ssd)
• Three t2.medium.elasticsearch master nodes (2 cpu, 4Gb memory, ebs storage [can be as small as os, no data])
• multi az and split brain prevention
• scale horizontally by adding data nodes ($350 per new node)
• no idea if the master node is enough or too much horsepower but we can adjust as necessary
• ~ $900 a month