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elastic

Source: R/elastic-package.r
elastic.Rd

An Elasticsearch R client.

About

This package gives you access to local or remote Elasticsearch databases.

Quick start

If you're connecting to a Elasticsearch server already running, skip ahead to Search

Install Elasticsearch (on OSX)

  • Download zip or tar file from Elasticsearch see here for download: https://www.elastic.co/downloads/elasticsearch

  • Unzip it: untar elasticsearch-2.3.5.tar.gz

  • Move it: sudo mv elasticsearch-2.3.5 /usr/local (replace version with your version)

  • Navigate to /usr/local: cd /usr/local

  • Add shortcut: sudo ln -s elasticsearch-2.3.5 elasticsearch (replace version with your version)

For help on other platforms, see https://www.elastic.co/guide/en/elasticsearch/reference/current/install-elasticsearch.html

Start Elasticsearch

  • Navigate to elasticsearch: cd /usr/local/elasticsearch

  • Start elasticsearch: bin/elasticsearch

Initialization

The function connect() is used before doing anything else to set the connection details to your remote or local elasticsearch store. The details created by connect() are written to your options for the current session, and are used by elastic functions.

Search

The main way to search Elasticsearch is via the Search() function. E.g.:

Search()

Security

Elasticsearch is insecure out of the box! If you are running Elasticsearch locally on your own machine without exposing a port to the outside world, no worries, but if you install on a server with a public IP address, take the necessary precautions. There are a few options:

  • Shield - A paid product - so probably only applicable to enterprise users

  • DIY security - there are a variety of techniques for securing your Elasticsearch. I collected a number of resources in a blog post at https://recology.info/2015/02/secure-elasticsearch/

Elasticsearch changes

As of Elasticsearch v2:

  • You can no longer create fields with dots in the name.

  • Type names may not start with a dot (other than the special .percolator type)

  • Type names may not be longer than 255 characters

  • Types may no longer be deleted

  • Queries and filters have been merged - all filter clauses are now query clauses. Instead, query clauses can now be used in query context or in filter context. See examples in Search() or Search_uri()

index names

The following are illegal characters, and can not be used in index names or types: \\, /, *, ?, <, >, |, , (comma). double quote and whitespace are also illegal.

Author

Scott Chamberlain