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I have a situation where I have installed two instances of Elasticsearch setup in remote server 1 (node1) and remote server 2 (node2), and I want to connect both these nodes in one cluster, however I also installed the kibana in one server and when I run the GET _cluster/health I get

"cluster_name" : "elasticsearch", "status" : "green", "timed_out" : false, "number_of_nodes" : 1, "number_of_data_nodes" : 1, "active_primary_shards" : 1, "active_shards" : 1, "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

Can you please help while providing any sample for both configs for node1 and node2, and how can I confirm both nodes are added in one cluster.

Below is my elasticsearch.yml file in server 1

bootstrap.memory_lock: false
cluster.name: elasticsearch
http.port: 9200
node.data: true
node.ingest: true
node.master: true
node.max_local_storage_nodes: 2
node.name: Server1
path.data: C:\ProgramData\Elastic\Elasticsearch\data
path.logs: C:\ProgramData\Elastic\Elasticsearch\logs
transport.tcp.port: 9300
xpack.license.self_generated.type: basic
xpack.security.enabled: false
discovery.zen.minimum_master_nodes: 2
discovery.zen.ping.unicast.hosts: ["Server1","Server2"]
network.host: Server1
Server2 : elasticsearch.yml file -
bootstrap.memory_lock: false
cluster.name: elasticsearch
http.port: 9200
node.data: true
node.ingest: true
node.master: false
node.max_local_storage_nodes: 1
node.name: Server2
path.data: C:\ProgramData\Elastic\Elasticsearch\data
path.logs: C:\ProgramData\Elastic\Elasticsearch\logs
transport.tcp.port: 9300
xpack.license.self_generated.type: basic
xpack.security.enabled: false
discovery.zen.ping.unicast.hosts: ["Server1","Server2"]
network.host: Server2
Thanks
Gaurav Singh
So 2 nodes in one cluster is one master node and one is slave node 
As of formula (2 / 2+1) = 0.6666 ~ 1
discovery.zen.minimum_master_nodes: 1
                Thanks for the help, I also need to put the line in both config and then it worked : discovery.zen.minimum_master_nodes: 1
– Mr. Gaurav Singh Rathore
                Mar 6 '19 at 12:49
you configured minimum_master_nodes (discovery.zen.minimum_master_nodes) of 2, but the second node have 
  
node.master: false
either change the second node to master:true or reduce minimum_master_nodes to 1
node.max_local_storage_nodes: 2
node.name: Server1
path.data: C:\ProgramData\Elastic\Elasticsearch\data
path.logs: C:\ProgramData\Elastic\Elasticsearch\logs
transport.tcp.port: 9300
xpack.license.self_generated.type: basic
xpack.security.enabled: false
discovery.zen.minimum_master_nodes: 1
discovery.zen.ping.unicast.hosts: ["Server1","Server2"]
network.host: Server1
Slave Node Configuration :
bootstrap.memory_lock: false
cluster.name: elasticsearch
http.port: 9200
node.data: true
node.ingest: true
node.master: false
node.max_local_storage_nodes: 1
node.name: Server2
path.data: C:\ProgramData\Elastic\Elasticsearch\data
path.logs: C:\ProgramData\Elastic\Elasticsearch\logs
transport.tcp.port: 9300
xpack.license.self_generated.type: basic
xpack.security.enabled: false
discovery.zen.minimum_master_nodes: 1
discovery.zen.ping.unicast.hosts: ["Server1","Server2"]
network.host: Server2
After doing this you will get the response like :
  "cluster_name": "elasticsearch",
  "status": "green",
  "timed_out": false,
  "number_of_nodes": 2,
  "number_of_data_nodes": 2,
  "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
Thanks 

Gaurav Singh
        
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