ElasticSearch
Show indices
curl -X GET 'localhost:9200/_settings?pretty'
curl -X GET "localhost:9200/_cat/nodes?pretty"
curl -X GET "localhost:9200/_cat/health?v&pretty"
curl -X GET "localhost:9200/_cat/indices?h=health,status,index"
curl -X GET "localhost:9200/indexname/_mapping?pretty"
curl -X GET "localhost:9200/indexname/_settings?pretty"
curl -X GET "localhost:9200/indexname/_count?pretty"