Currently we index huge amount of data using elasticsearch every 3 months. As a devops, I always have to setup Elasticsearch EC2 instance manually. Each time, when we need to scale the elasticsearch nodes for indexing, I have to launch the ec2 instance and manually install java, ElasticSearch etc. and of course this is time consuming task taking 20 mins per node. To avoid this manual intervention, we want to run the entire process of scaling the elasticsearch nodes automatically.