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Elasticsearch

The following assumes that elasticsearch is running on the localhost on port 9200.

General Info about elasticsearch instance

How is elasticsearch doing?

curl -XGET 'localhost:9200/_cat/health?v&pretty' 
curl -XGET 'localhost:9200/_cat/nodes?v’

What are the indices on this instance?

curl -XGET 'localhost:9200/_cat/indices?v&pretty’

Searching Data

Viewing Data

This will give you, by default, the first 20 results as prettified JSON

curl –XGET ‘localhost:9200/index/_search?pretty’

Filtering Results

Only get results that match certain criteria:

curl -XGET 'localhost:9200/index/_search?pretty' -H 'Content-Type: application/json' –d’{"query": { "match": { "field": "value" } } }'

Sorting Examples

Search index, matching all, and sorting by field

curl -XGET 'localhost:9200/index/_search?q=*&sort=field:asc&pretty’

Search index, matching all, and sorting by field

curl -XGET 'localhost:9200/index/_search?pretty' -H 'Content-Type: application/json' -d’
{
  "query": { "match_all": {} },
  "sort": [
    { "field": "asc" }
  ]
}'

Limiting Results

Only give one result back from searching index:

curl -XGET 'localhost:9200/index/_search?q=*&size=1&pretty'

Give back one result, starting at search result 10, from index

curl -XGET 'localhost:9200/bank/_search?q=*&size=1&from=10&pretty'

Adding Information

Adding an index

curl -XPUT 'localhost:9200/newindex?pretty’

Inserting documents to an index

Insert the JSON document (after the -d) into the index with the id newid:

curl –XPUT ‘localhost:9200/index/external/newid?pretty’ –d’{“field”:”data”}’
courses/cs397/winter2017/elasticsearch.1490635302.txt.gz · Last modified: 2017/03/27 17:21 by admin
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