Add node2 (ES 2.0) to create a cluster with node 1 (ES 1.4.4)



I try to create a cluster with the old machine and a new one. But I am having problem on unicast discovery.

ES 1.4.4 (old machine) elasticsearch "node1"
node.master: true true
path.conf: /etc/elasticsearch /var/lib/elasticsearch 10s false : [""]

ES 2.0 (new machine) elasticsearch "node2"
node.master: false false [""]

The node2 is having problem connecting to node 1.
$ curl
curl: (52) Empty reply from server

Then the elasticsearch.log in node 1 will show
[WARN ][transport.netty ] [node1] Message not fully read (request) for [934] and action [internal:discovery/zen/unicast], resetting

Is there anything I missed? How can I connect node2 ES 2.0 to node1?


(Mark Walkom) #2

You can't!
The upgrade process from 1.X to 2.X requires a complete cluster restart.


Does this mean I cannot have a cluster with a ES1.4.4 and ES 2.0 together?

(Mark Walkom) #4

That is correct.

(system) #5