Installing additional script plugins

ElasticSearch provides native scripting (a Java code compiled in JAR) and MVEL, but a lot of interesting languages are available, such as JavaScript and Python. These languages must be installed as plugins.

Getting ready

You need a working ElasticSearch cluster.

How to do it...

For installing a JavaScript language support for Elasticsearch, we will perform the following steps:

1. From the command line, simply call the following command:

   bin/plugin --install elasticsearch/elasticsearch-lang-javascript/1.4.0
   

2. It will fire as results:

   -> Installing elasticsearch/elasticsearch-lang-javascript/1.4.0...
   Trying http://download.elasticsearch.org/elasticsearch/elasticsearch-lang-javascript/elasticsearch-lang-javascript-1.4.0.zip...
   Downloading ....DONE
   Installed lang-javascript
   

   If the installation is successful, the output will end with Installed; otherwise, an error is returned.

3. For installing a Python language support for Elasticsearch, just call the following command...