How to bind Elasticsearch 2.0 on both Loopback and Non-Loopback interfaces?

For 2.0 you would need to use

network.bind_host: 0

As of ElasticSearch 7.x, this configuration has changed yet again. for a simple single node cluster bound to loopback, local and external IPs, you essentially do this:

network.host: [_local_, _site_, _global_]
cluster.initial_master_nodes: node-1

The cluster node setting is explained here while the network host setting is in the documentation here, although it doesn't say how you would assign multiple values to network.host.

Go to

'<path_to_elasticsearch>/elasticsearch-2.3.4/config'

Open elasticsearch.yml

Add network.host: 0.0.0.0

Now check which port elasticsearch is using (9200 is default), go to firewall inbound rules and add those ports.