Configure port number of ElasticSearch

Question

We are using ElasticSearch 0.20.2 and run the daemon using

bin/elasticsearch [-f]

The bin/elasticsearch script sets ES_HOME on its own and there seem to be no way to influence the path of the configuration file read. ES always reads the settings from

$ES_HOME/config/elasticsearch.yml

However I must be able for specifying the path to our own configuration file without overriding the existing elasticsearch.yml that comes with ElasticSearch.

How do I do that?

Answer 1

You have to insert following line in your elasticsearch.yml file.

http.port: port_number 

I did same in my setup, its working for me.

Answer 2

For multi-version testing, you should specify two different ports:

bin/elasticsearch -E http.port=9400 -E transport.tcp.port=9500 

This way, if you have another version of elasticsearch on the same machine, they won't talk to each other. If you do want them to communicate, leave the transport port as default, or make it the same on both instances.

Answer 3

Just change the http.port in elasticsearch.yml (commonly in /etc/elasticsearch/elasticsearch.yml) and remove # from the front and restart your server.

Answer 4

You need to modify path.conf. It would look like:

bin/elasticsearch -f -Des.path.conf=/path/to/config/dir

That will then read /path/to/config/dir/elasticsearch.yml and /path/to/config/dir/elasticsearch.json (if present).

Also keep in mind that you can just specify any option you'd like via -Des. in the same way I did with path.conf above.