Demo :: Zero downtime on Elasticsearch

1.txt

$curl -XPOST http://localhost:9200/demo/post/1
{
  "author": "Somkiat",
  "title": "My first post"
}

2.txt

$curl -XGET http://localhost:9200/demo/_mapping?pretty

{
  "demo" : {
    "mappings" : {
      "post" : {
        "properties" : {
          "author" : {
            "type" : "string"
          },
          "title" : {
            "type" : "string"
          }
        }
      }
    }
  }
}

3.txt

$curl -XPOST http://localhost:9200/demo/post/2
{
  "Author": "Prathan",
  "Title": "My second post"
}

4.txt

$curl -XGET http://localhost:9200/demo/_mapping?pretty

{
  "demo" : {
    "mappings" : {
      "post" : {
        "properties" : {
          "Author" : {
            "type" : "string"
          },
          "Title" : {
            "type" : "string"
          },
          "author" : {
            "type" : "string"
          },
          "title" : {
            "type" : "string"
          }
        }
      }
    }
  }
}

5.txt

$curl -XGET http://localhost:9200/new_demo/
{
    "mappings" : {
      "post" : {
        "properties" : {
          "Author" : {
            "type" : "string"
          },
          "Title" : {
            "type" : "string"
          }
        }
      }
    }
}

6.txt

curl -XPOST localhost:9200/_aliases -d 
{
    "actions": [
        { "add": {
            "alias": "xxxxx",
            "index": "demo"
        }}
    ]
}

7.txt

curl -XPOST localhost:9200/_aliases -d
{
    "actions": [
        { "remove": {
            "alias": "xxxxx",
            "index": "demo"
        }},
        { "add": {
            "alias": "xxxxx",
            "index": "new_demo"
        }}
    ]
}