elasticsearch

• delete index

  $ curl -XDELETE 'localhost:9200/twitter?pretty'
  

• check if index exists

  $ curl -XHEAD 'localhost:9200/twitter?pretty'
  

• copy index

  $ curl -XPOST 'localhost:9200/_reindex?pretty' \
       -H 'Content-Type: application/json' \
       -d'
  {
  "source": {
    "index": "tw"
  },
  "dest": {
    "index": "twitter"
  },
  "script": {
    "inline": "ctx._id = ctx._source.id"
  }
  }'
  

• update refresh_interval

  $ curl -XPUT 'localhost:9200/twitter/_settings?pretty' \
       -H 'Content-Type: application/json' \
       -d'
  {
    "index" : {
        "refresh_interval" : "60s"
    }
  }'
  

• copy_to: title, content -> text fields

  $ curl -XPUT 'localhost:9200/web?pretty' \
       -H 'Content-Type: application/json' \
       -d'
  {
  "mappings": {
    "docs": {
      "properties": {
        "title": {
          "type": "text",
          "copy_to": "text" 
        },
        "content": {
          "type": "text",
          "copy_to": "text" 
        },
        "text": {
          "type": "text"
        }
      }
    }
  }
  }'
  

• specific date fields

  $ curl -XPUT 'localhost:9200/web?pretty' \
       -H 'Content-Type: application/json' \
       -d '
  {
  "mappings": {
    "docs": {
      "properties": {
        "creationDate": {
          "type":   "date"
        },
        "captureDate": {
          "type":   "date"
        }
      }
    }
  }
  }'