Elasticsearch curl: (7) couldn't connect to host

Question

I was trying out elastic search with mongodb.

I have followed steps from http://satishgandham.com/2012/09/a-complete-guide-to-integrating-mongodb-with-elastic-search/

But when I try to set index by

curl -XPUT 'http://localhost:9200/_river/mongodb/_meta' -d '
{
    "type": "mongodb",
    "mongodb": {
        "db": "smmc-dart",
        "collection": "smmc_collectionDetails"
    },
    "index": {
        "name": "caseName",
        "type": "string"
    }
}'

I'm getting error

curl: (7) couldn't connect to host

When I tried http://localhost:9200/ on my browser it shows

{
  "status" : 200,
  "name" : "Nicholas Scratch",
  "version" : {
    "number" : "1.1.0",
    "build_hash" : "2181e113dea80b4a9e31e58e9686658a2d46e363",
    "build_timestamp" : "2014-03-25T15:59:51Z",
    "build_snapshot" : false,
    "lucene_version" : "4.7"
  },
  "tagline" : "You Know, for Search"
}

I also tried this in terminal

curl -XGET http://10.20.4.220:9200/

It resulted

curl: (7) couldn't connect to host

Why is this happening and how to fix it.

Answer 1

On my Mac OS X, I use 127.0.0.1:9200/ instead of http://localhost:9200/ cause I had the same problem.

I think that when you use the command the terminal replaces the localhost by it's IPv6 address and I'm not sure that curl supports that.

Please check and let me know.