Cluster endpoint with coordinating node

Elastic Stack Elasticsearch
1

I have set up a 6 node (3 master + 3 data) cluster.

I have also set a 7th coordinating node just to expose kibana as outlined here.

What is now the cluster endpoint?

In my elasticsearch.yml

cluster.name: es-esa-staging

bootstrap.memory_lock: true
transport.host: 10.11.27.27
network.host: 127.0.0.1
discovery.ec2.endpoint: ec2.eu-west-1.amazonaws.com
discovery.ec2.host_type: private_ip
discovery.zen.hosts_provider: ec2
http.port: 9200
discovery.zen.minimum_master_nodes: 2 
node.master: false
node.data: false
node.ingest: false
s3.client.default.endpoint: s3-eu-west-1.amazonaws.com
transport.tcp.port: 9300
node.name: elastic-staging-coord
action.auto_create_index: true

and in my kibana.yml

elasticsearch.url: "http://localhost:9200"
server.port: 80
server.host: 10.11.27.27

However

$ curl -IL http://<public_ip_of_coordinating_node>:9200
curl: (7) Failed to connect to <public_ip_of_coordinating_node> port 9200: Connection refused

What is now my cluster endpoint? Where all elasticsearch request be sent to?

cluster health is reported OK by the particular node btw

{
  "cluster_name" : "es-staging",
  "status" : "green",
  "timed_out" : false,
  "number_of_nodes" : 7,
  "number_of_data_nodes" : 3,
  "active_primary_shards" : 1,
  "active_shards" : 2,
  "relocating_shards" : 0,
  "initializing_shards" : 0,
  "unassigned_shards" : 0,
  "delayed_unassigned_shards" : 0,
  "number_of_pending_tasks" : 0,
  "number_of_in_flight_fetch" : 0,
  "task_max_waiting_in_queue_millis" : 0,
  "active_shards_percent_as_number" : 100.0
}

edit: when switching to 0.0.0.0 as network.host setting, I get the following:

$ curl -IL http://<public_ip_or_coordinating_node>:9200
HTTP/1.1 503 Service Unavailable
Content-Type: text/html; charset=UTF-8
Content-Length: 959
Connection: close
P3P: CP="CAO PSA OUR"
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache

In the mean time:

 elasticsearch.service - Elasticsearch
   Loaded: loaded (/usr/lib/systemd/system/elasticsearch.service; enabled; vendor preset: enabled)
   Active: active (running) since Wed 2018-12-12 08:08:24 UTC; 4min 39s ago
     Docs: http://www.elastic.co
 Main PID: 9872 (java)
    Tasks: 52 (limit: 4704)
   CGroup: /system.slice/elasticsearch.service
           ├─9872 /usr/bin/java -Xms1g -Xmx1g -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:+AlwaysPreTouch -Xss1m -Djava.awt.headless=true -Dfile.encoding=UT
           └─9952 /usr/share/elasticsearch/modules/x-pack-ml/platform/linux-x86_64/bin/controller

( Ι am running kibana as root to be able to expose it to 80)

2

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