I was able to take backup of elastic server data using the steps mentioned in this thread...
https://forums.aws.amazon.com/message.jspa?messageID=930345#930345
But I am not able to restore data to another server. I tried a similar command line...
curl -XPOST 'http://search-weblogs-abcdefghijklmnojiu.us-east-1.a9.com/_snapshot/weblogs-index-backups/snapshot_1/_restore'
But I get connection refused error. How do I restore snapshot backup of one server to another es instance?