By default, Elasticsearch binds to loopback addresses only — e.g.
[::1]. This is sufficient to run a single development node on a server.
In fact, more than one node can be started from the same
location on a single node. This can be useful for testing Elasticsearch’s
ability to form clusters, but it is not a configuration recommended for
In order to communicate and to form a cluster with nodes on other servers, your
node will need to bind to a non-loopback address. While there are many
network settings, usually all you need to configure is