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DISCUSS THE ELASTIC STACK


WHAT ARE PORTS 9200 AND 9300 USED FOR?

Meta Elastic Elastic Tips and Common Fixes
elasticsearch

warkolm (Mark Walkom) June 25, 2020, 12:51am #1

[This is an extension on an older thread - Elasticsearch port 9200 or 9300?]

By default, Elasticsearch uses two ports to listen to external TCP traffic;

 * Port 9200 is used for all API calls over HTTP. This includes search and
   aggregations, monitoring and anything else that uses a HTTP request. All
   client libraries will use this port to talk to Elasticsearch
 * Port 9300 is a custom binary protocol used for communications between nodes
   in a cluster. For things like cluster updates, master elections, nodes
   joining/leaving, shard allocation

Historically, port 9300 was also used for connections from client libraries,
however this type of interaction is deprecated across our official clients, and
not supported elsewhere.

You can change the ports that Elasticsearch uses for this, via the http.port and
transport.port settings.

4 Likes

Elasticsearch port 9200 or 9300?
Will es nodes connect with each other in 9200?
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WHAT ARE PORTS 9200 AND 9300 USED FOR?

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warkolmMark WalkomElastic Team Member
1
Jun 2020


[This is an extension on an older thread - Elasticsearch port 9200 or 9300?]

By default, Elasticsearch uses two ports to listen to external TCP traffic;

 * Port 9200 is used for all API calls over HTTP. This includes search and
   aggregations, monitoring and anything else that uses a HTTP request. All
   client libraries will use this port to talk to Elasticsearch
 * Port 9300 is a custom binary protocol used for communications between nodes
   in a cluster. For things like cluster updates, master elections, nodes
   joining/leaving, shard allocation

Historically, port 9300 was also used for connections from client libraries,
however this type of interaction is deprecated across our official clients, and
not supported elsewhere.

You can change the ports that Elasticsearch uses for this, via the http.port and
transport.port settings 762.

4

 * Elasticsearch port 9200 or 9300?94
 * Will es nodes connect with each other in 9200?3





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