Elasticsearch cluster setup with 7.5.1

Elastic Stack Elasticsearch
1

Hello,

I am trying to set up a 3-node elasticsearch cluster of version 7.5.1.
I have 1 master node, 1 data node, and 1 client node.
Each instance of elasticsearch.yml configuration is as below.

Master node

path.data: /var/lib/elasticsearch
path.logs: /var/log/elasticsearch
cluster.name: prod-elk-west
node.name: mnode01
network.host: MASTER_NODE_IP
http.port: 9200
discovery.zen.ping.unicast.hosts: ["MASTER_NODE_IP"]
discovery.zen.minimum_master_nodes: 1
gateway.recover_after_nodes: 1
node.master: true
node.data: false
xpack.security.audit.enabled: false
xpack.security.enabled: false
indices.query.bool.max_clause_count: 10000
cluster.initial_master_nodes: ["mnode01"]

Client node

path.data: /var/lib/elasticsearch
path.logs: /var/log/elasticsearch
cluster.name: prod-elk-west
node.name: cnode01
network.host: CLIENT_NODE_IP
http.port: 9200
discovery.zen.ping.unicast.hosts: ["MASTER_NODE_IP"]
discovery.zen.minimum_master_nodes: 1
gateway.recover_after_nodes: 1
node.master: false
node.data: false
http.cors.enabled: true
http.cors.allow-origin: "*"
http.max_header_size: 16kb
xpack.security.audit.enabled: false
xpack.security.enabled: false
indices.query.bool.max_clause_count: 10000
cluster.initial_master_nodes: ["mnode01"]

Data Node

path.data: /var/lib/elasticsearch
path.logs: /var/log/elasticsearch
cluster.name: prod-elk-west
node.name: dnode01
network.host: DATA_NODE_IP
http.port: 9200
discovery.zen.ping.unicast.hosts: ["MASTER_NODE_IP"]
discovery.zen.minimum_master_nodes: 1
gateway.recover_after_nodes: 1
node.master: false
node.data: true
xpack.security.audit.enabled: false
xpack.security.enabled: false
indices.query.bool.max_clause_count: 10000
cluster.initial_master_nodes: ["mnode01"]

All the instances are up and running. But the cluster health is checked the number of nodes is shown as 1. sample is added below.

curl -XGET http://MATER_NODE_IP:9200/_cluster/health?pretty
{
  "cluster_name" : "prod-elk-west",
  "status" : "green",
  "timed_out" : false,
  "number_of_nodes" : 1,
  "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
}

could you please help me bring the cluster up and running with all nodes.

Thanks and regards,
Suraj Jannu

2

You will need to share the logs of the nodes for us to comment further.

Also 7.5 is very much EOL and you should not be using it.

3

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