ElasticSearch 2.0 upgrade now can't connect to server

Question

I've had an elastic server cluster running for a few months now. 2 node cluster. Pretty simple, things were working pretty nice.

So, I upgraded from 1.7.2 to 2.0.0 today and now I can't get to my servers.... If I curl on the server using local host, everything works fine, if I curl on the machine using it's machine name, I get connection refused.

Upgrading is the only thing that's changed. Any ideas why elastic isn't seeing anything when I use the machine name?

Thanks, Nick

Answer 1

FWIW you can set the network.host: 0.0.0.0 in elasticsearch.yml or launch as follows : bin/elasticsearch --network.host 0.0.0.0

This way you should be able to access the cluster in loopback as well as non_loopback

Answer 2

This is, probably, the change in 2.0 that made the cluster accessible only via localhost.

Update each elasticsearch.yml file and provide a network.host for the node.