I have made changes in elasticsearch.yml for the instance running on my machine and I have set the instance as master node . Similarly I have setup the instances running on other two machines as data nodes. what should be the configurations made in all the three elasticsearch instance's yml file so that both data nodes are connected to master node? I am attaching the yml files for both master and data nodes. But I am unable to start the instances with these configurations. Hoping for a solution for this.