How to setup a tokenizer in elasticsearch
You can define mappings in the config files, but for most cases it is easier/more flexible to configure through the API. For example, this command will add a keyword/lowercase analyzer to the index test:
$ curl -XPUT localhost:9200/testindex/ -d '{ "settings":{ "index":{ "analysis":{ "analyzer":{ "analyzer_keyword":{ "tokenizer":"keyword", "filter":"lowercase" } } } } }, "mappings":{ "test":{ "properties":{ "title":{ "analyzer":"analyzer_keyword", "type":"string" } } } }}'
To update an existing index, use
$ curl -XPUT localhost:9200/testindex/_settings -d '{..........}However you can't update non dynamic settings.