For the latest version of Elasticsearch (0.90.x based on Lucene 4), there is a paid extension available here
Install with modgit:
$ cd /path/to/magento
$ modgit init
$ modgit clone elasticsearch https://github.com/jreinke/magento-elasticsearch.git
Install with modman:
$ cd /path/to/magento
$ modman init
$ modman clone https://github.com/jreinke/magento-elasticsearch.git
or download package manually:
- Download latest version here
- Unzip in Magento root folder
- Clean cache
- Go to System > Configuration > Catalog > Catalog Search
- Select Elasticsearch search engine
- Configure server connection parameters
- Specify index name (default is magento)
- Optionally defines your custom search parameters
- Optionally boost some product attributes in Catalog > Attributes > Manage Attributes
- Reindex catalog search index