Cant connect to my proxied elasticsearch node - elasticsearch

Question

I'm having issues with connecting from my Go client to my es node.
I have elasticsearch behind an nginx proxy that sets basic auth.
All settings are default in ES besides memory.
Via browser it works wonderfully, but not via this client:
https://github.com/olivere/elastic
I read the docs and it says it uses the /_nodes/http api to connect. Now this is probably where I did something wrong because the response from that api looks like this:
{
"_nodes" : {
"total" : 1,
"successful" : 1,
"failed" : 0
},
"cluster_name" : "elasticsearch",
"nodes" : {
"u6TqFjAvRBa3_4FndfKh4w" : {
"name" : "u6TqFjA",
"transport_address" : "127.0.0.1:9300",
"host" : "127.0.0.1",
"ip" : "127.0.0.1",
"version" : "5.6.2",
"build_hash" : "57e20f3",
"roles" : [
"master",
"data",
"ingest"
],
"http" : {
"bound_address" : [
"[::1]:9200",
"127.0.0.1:9200"
],
"publish_address" : "127.0.0.1:9200",
"max_content_length_in_bytes" : 104857600
}
}
}
}
I'm guessing I have to set the IPs to my actual IP/domain (my domain is like es01.somedomain.com)
So how do i correctly configure elastisearch so that my go client can connect?
My config files for nginx look similar to this: https://www.elastic.co/blog/playing-http-tricks-nginx
Edit: I found a temporary solution by setting elastic.SetSniff(false) in the Options for the client, but I think that means I can't scale ES horizontally. So still looking for an alternative.

Answer 1

You are looking for the HTTP options, specifically http.publish_host and http.publish_port, which should be set to the publicly reachable address and port of the Nginx server proxying the ES node.
Note that with Elasticsearch listening on 127.0.0.1:9300 for the transport, you won't be able to form a cluster with nodes on other hosts. The transport can be configured similarly with the transport options.