Error: Request error, retrying -- connect ECONNREFUSED 127.0.0.1:9200

Hi guys, i’m hitting this over & over again.

 Elasticsearch ERROR: 2016-01-07T21:20:52Z
  Error: Request error, retrying -- connect ECONNREFUSED 127.0.0.1:9200
      at Log.error (/usr/src/project/node_modules/elasticsearch/src/lib/log.js:225:56)
      at checkRespForFailure (/usr/src/project/node_modules/elasticsearch/src/lib/transport.js:231:18)
      at HttpConnector.<anonymous> (/usr/src/project/node_modules/elasticsearch/src/lib/connectors/http.js:153:7)
      at ClientRequest.wrapper (/usr/src/project/node_modules/elasticsearch/node_modules/lodash/index.js:3095:19)
      at emitOne (events.js:77:13)
      at ClientRequest.emit (events.js:169:7)
      at Socket.socketErrorListener (_http_client.js:259:9)
      at emitOne (events.js:77:13)
      at Socket.emit (events.js:169:7)
      at emitErrorNT (net.js:1253:8)

Elasticsearch WARNING: 2016-01-07T21:20:52Z
  Unable to revive connection: http://localhost:9200/

Elasticsearch WARNING: 2016-01-07T21:20:52Z
  No living connections

Error: No Living connections
    at sendReqWithConnection (/usr/src/project/node_modules/elasticsearch/src/lib/transport.js:210:15)
    at next (/usr/src/project/node_modules/elasticsearch/src/lib/connection_pool.js:213:7)
    at doNTCallback0 (node.js:419:9)
    at process._tickCallback (node.js:348:13)

The situation is like this. I have a nodejs app running inside a docker container. Inside this app, I’ve create the client like this

var client = new elasticsearch.Client({
        connectionClass: CustomESHTTPConnector,
        host: process.env.ELASTICSEARCH_HOST,
        deadTimeout: 100000,
        maxRetries: 6
    });

Where ELASTICSEARCH_HOST is the address of another VM inside the same network => 10.0.0.5 running ES, of course

If I curl 10.0.0.5:9200 inside the container, and inside the VM hosting that container, I get

{
  "name" : "app-node",
  "cluster_name" : "app-cluster",
  "version" : {
    "number" : "2.1.1",
    "build_hash" : "40e2c53a6b6c2972b3d13846e450e66f4375bd71",
    "build_timestamp" : "2015-12-15T13:05:55Z",
    "build_snapshot" : false,
    "lucene_version" : "5.3.1"
  },
  "tagline" : "You Know, for Search"
}

The app shoud reach the elasticsearch server. Any ideas why im getting this? Thanks in advance

[matiasdecarli]

Closing this.

The error was the process.env.ELASTICSEARCH_HOST not being set at the runtime for another reason. Thaks for your help @iquirino & @spalger !

[iquirino]

Change network.host: 0.0.0.0 to network.host: "localhost"

Are you using NAT or Bridge? If using NAT, dont forget to explicitly specify port redirection.

VMWare, Oracle VirtualBox ??

Thank you!