Master election process is not happening

Elastic Stack Elasticsearch
1

HI,
I have configured multi master node configurtaion in cluster but master election process is not happening correctly ..

I have 4 nodes out of 4 , Node1, Node2 and node3 is master node and node 4 is data node.
Active master node is Node 1. i have configured yml file like below

discovery.seed_hosts: ["Node1", "Node2","Node3","Node4"]

cluster.initial_master_nodes: ["Node1","Node2","Node3"]

After cluster configuration everything is running but when i stopped node1 then node2 is not taking as master .
Is there any configuration i missed here could you please help me out.

2

You only need to mention the master-eligible nodes in discovery.seed_hosts, so "Node4" shouldn't be there.

This setting is ignored once the cluster is running, and should be removed.

Without logs it's not really possible to help further. What do the logs say?

3

If you have 3 master eligible nodes you always need 2 available to elect a master. You can therefore not shut down 2 and expect a master to be elected.

4

If it is so then where i need to mention for data node. Could you please tell me

5

Yes, here what i have configured is like

Node1
node.master: true
node.data:false
 
Node2
node.master: true
node.data:false

Node3
node.master: true
node.data:false

Configuration is correct ??

6

because i need to add one more node as data node in this cluster

7

You don't. You tell the data node how to discover the master, not the other way around.

8

ok but how to do that could you please help me to configure data node with this master .
I need to add that data node also in this cluster right ..

so in data node how can i configure with discovery.host....

9

As of now i have three master node is running like below

 "cluster_name" : "test",
  "status" : "green",
  "timed_out" : false,
  "number_of_nodes" : 3,
  "number_of_data_nodes" : 0,
  "active_primary_shards" : 0,
  "active_shards" : 0,
  "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
10

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