# Nodes Cant Communicate to eachother

**URL:** <https://discuss.elastic.co/t/nodes-cant-communicate-to-eachother/355729>\
**Category:** Elasticsearch\
**Created:** [March 19, 2024, 2:15pm UTC](https://discuss.elastic.co/t/nodes-cant-communicate-to-eachother/355729 "2024-03-19T14:15:47Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![fatima1](https://avatars.discourse-cdn.com/v4/letter/f/5fc32e/32.png) [@fatima1](https://discuss.elastic.co/u/fatima1)\
**Post date:** [March 19, 2024, 2:15pm UTC](https://discuss.elastic.co/t/nodes-cant-communicate-to-eachother/355729/1 "2024-03-19T14:15:47Z")

</div>

Could you please review the configurations I've provided for both machines? I'm encountering an issue where I'm unable to establish communication between the two nodes in Elasticsearch.  
Machine 1

# ======================== Elasticsearch Configuration =========================

# 

# NOTE: Elasticsearch comes with reasonable defaults for most settings.

# Before you set out to tweak and tune the configuration, make sure you

# understand what are you trying to accomplish and the consequences.

# 

# The primary way of configuring a node is via this file. This template lists

# the most important settings you may want to configure for a production cluster.

# 

# Please consult the documentation for further information on configuration options:

# [Elasticsearch Guide | Elastic](https://www.elastic.co/guide/en/elasticsearch/reference/index.html)

# 

# ---------------------------------- Cluster -----------------------------------

# 

# Use a descriptive name for your cluster:

# 

cluster.name: my-application

# 

# ------------------------------------ Node ------------------------------------

# 

# Use a descriptive name for the node:

# 

node.name: node-1

node.master: true

# 

# Add custom attributes to the node:

# 

#node.attr.rack: r1

# 

# ----------------------------------- Paths ------------------------------------

# 

# Path to directory where to store the data (separate multiple locations by comma):

# 

#path.data: /path/to/data

# 

# Path to log files:

# 

#path.logs: /path/to/logs

# 

# ----------------------------------- Memory -----------------------------------

# 

# Lock the memory on startup:

# 

#bootstrap.memory\_lock: true

# 

# Make sure that the heap size is set to about half the memory available

# on the system and that the owner of the process is allowed to use this

# limit.

# 

# Elasticsearch performs poorly when the system is swapping the memory.

# 

# ---------------------------------- Network -----------------------------------

# 

# By default Elasticsearch is only accessible on localhost. Set a different

# address here to expose this node on the network:

# 

network.host: MAchine 1 ip

# 

# By default Elasticsearch listens for HTTP traffic on the first free port it

# finds starting at 9200. Set a specific HTTP port here:

# 

http.port: 9200

transport.port: 9300

transport.host: 0.0.0.0

# 

# For more information, consult the network module documentation.

# 

# --------------------------------- Discovery ----------------------------------

# 

# Pass an initial list of hosts to perform discovery when this node is started:

# The default list of hosts is ["Machine1 ip", "[::1]"]

# 

discovery.seed\_hosts: ["Machine1 ip", "Machine2 ip"]

# 

# Bootstrap the cluster using an initial set of master-eligible nodes:

# 

# 

# For more information, consult the discovery and cluster formation module documentation.

# 

# ---------------------------------- Various -----------------------------------

# 

# Require explicit names when deleting indices:

# 

#action.destructive\_requires\_name: true

# 

# ---------------------------------- Security ----------------------------------

# 

# \*\*\* WARNING \*\*\*

# 

# Elasticsearch security features are not enabled by default.

# These features are free, but require configuration changes to enable them.

# This means that users don’t have to provide credentials and can get full access

# to the cluster. Network connections are also not encrypted.

# 

# To protect your data, we strongly encourage you to enable the Elasticsearch security features.

# Refer to the following documentation for instructions.

# 

# [Configure security for the Elastic Stack | Elasticsearch Guide [7.16] | Elastic](https://www.elastic.co/guide/en/elasticsearch/reference/7.16/configuring-stack-security.html)

Machine 2

# ======================== Elasticsearch Configuration =========================

# 

# NOTE: Elasticsearch comes with reasonable defaults for most settings.

# Before you set out to tweak and tune the configuration, make sure you

# understand what are you trying to accomplish and the consequences.

# 

# The primary way of configuring a node is via this file. This template lists

# the most important settings you may want to configure for a production cluster.

# 

# Please consult the documentation for further information on configuration options:

# [Elasticsearch Guide | Elastic](https://www.elastic.co/guide/en/elasticsearch/reference/index.html)

# 

# ---------------------------------- Cluster -----------------------------------

# 

# Use a descriptive name for your cluster:

# 

cluster.name: my-application

# 

# ------------------------------------ Node ------------------------------------

# 

# Use a descriptive name for the node:

# 

node.name: node-2

node.master: true

# 

# Add custom attributes to the node:

# 

#node.attr.rack: r1

# 

# ----------------------------------- Paths ------------------------------------

# 

# Path to directory where to store the data (separate multiple locations by comma):

# 

#path.data: /path/to/data

# 

# Path to log files:

# 

#path.logs: /path/to/logs

# 

# ----------------------------------- Memory -----------------------------------

# 

# Lock the memory on startup:

# 

#bootstrap.memory\_lock: true

# 

# Make sure that the heap size is set to about half the memory available

# on the system and that the owner of the process is allowed to use this

# limit.

# 

# Elasticsearch performs poorly when the system is swapping the memory.

# 

# ---------------------------------- Network -----------------------------------

# 

# By default Elasticsearch is only accessible on localhost. Set a different

# address here to expose this node on the network:

# 

network.host: Machine2 ip

# 

# By default Elasticsearch listens for HTTP traffic on the first free port it

# finds starting at 9200. Set a specific HTTP port here:

# 

http.port: 9200

transport.port: 9300

transport.host: 0.0.0.0

# 

# For more information, consult the network module documentation.

# 

# --------------------------------- Discovery ----------------------------------

# 

# Pass an initial list of hosts to perform discovery when this node is started:

# The default list of hosts is ["Machine2 ip", "[::1]"]

# 

discovery.seed\_hosts: ["Machine1 ip", "Machine2 ip"]

# 

# Bootstrap the cluster using an initial set of master-eligible nodes:

# 

# 

# For more information, consult the discovery and cluster formation module documentation.

# 

# ---------------------------------- Various -----------------------------------

# 

# Require explicit names when deleting indices:

# 

#action.destructive\_requires\_name: true

# 

# ---------------------------------- Security ----------------------------------

# 

# \*\*\* WARNING \*\*\*

# 

# Elasticsearch security features are not enabled by default.

# These features are free, but require configuration changes to enable them.

# This means that users don’t have to provide credentials and can get full access

# to the cluster. Network connections are also not encrypted.

# 

# To protect your data, we strongly encourage you to enable the Elasticsearch security features.

# Refer to the following documentation for instructions.

# 

# [Configure security for the Elastic Stack | Elasticsearch Guide [7.16] | Elastic](https://www.elastic.co/guide/en/elasticsearch/reference/7.16/configuring-stack-security.html)

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [April 16, 2024, 2:15pm UTC](https://discuss.elastic.co/t/nodes-cant-communicate-to-eachother/355729/2 "2024-04-16T14:15:49Z")

</div>

Closed on April 16, 2024, 2:15pm UTC

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