I have a hard time understanding the behavior so maybe someone here has seen it and can shed some light as to what is actually happening.
I'm using elasticsearch.js to push templates to indices. I use client.indices.putTemplate() function to do so. My ES cluster is behind nginx and I setup the ES client to connect to nginx using https on port 443. Nginx will then strip ssl and forward to a client node in the cluster.
All of the setup works fine for searching and basic usage of ES. Every time I try to associate a new template to an index, I get connection failure to https://:9200. Notice the wrong port. I don't quite understand why the ES client has to connect again to hosts that are behind the nginx gateway using either the wrong protocol (https instead of http) or the wrong port (9200 instead of 443).
If I change my configuration to connect the ES client to plain http (http://:9200) everything works fine. If I connect using https://:443, I get the following error:
PUT https://<ip>:9200/_template/template_mapping?order=2&create=true&master_timeout=600000 => socket hang up at Log.error (/srv/www/node_modules/elasticsearch/src/lib/log.js:226:60) at checkRespForFailure (/srv/www/node_modules/elasticsearch/src/lib/transport.js:244:18) at HttpConnector.<anonymous> (/srv/www/node_modules/elasticsearch/src/lib/connectors/http.js:153:7) at ClientRequest.wrapper (/srv/www/node_modules/lodash/index.js:3095:19) at ClientRequest.emit (events.js:95:17) at CleartextStream.socketErrorListener (http.js:1548:9) at CleartextStream.emit (events.js:95:17) at SecurePair.<anonymous> (tls.js:1411:15) at SecurePair.emit (events.js:95:17) at SecurePair.error (tls.js:1018:27)
So my question is: why does the ES client, while connected to https://host:443 tries to connect to different hosts when invoking client.indices.putTemplate()? It is already connected to the cluster, why putting template makes the client reconnect on, what seems, bogus protocol/host/port combo?
- Elasticsearch cluster of 3 master nodes, 3 data nodes and 2 client nodes.
- Elasticsearch.js (client set to version 1.5)