{"id":2238,"date":"2023-04-10T06:00:00","date_gmt":"2023-04-10T11:00:00","guid":{"rendered":"https:\/\/www.bigdatainrealworld.com\/?p=2238"},"modified":"2023-03-26T07:21:49","modified_gmt":"2023-03-26T12:21:49","slug":"what-is-an-alias-and-how-to-create-an-alias-in-elasticsearch","status":"publish","type":"post","link":"https:\/\/www.bigdatainrealworld.com\/what-is-an-alias-and-how-to-create-an-alias-in-elasticsearch\/","title":{"rendered":"What is an alias and how to create an alias in Elasticsearch?"},"content":{"rendered":"\n<p>An alias as the name suggests is an alias or another name to the index in Elasticsearch. It is quite useful when you want to refer to an index by another name. So instead of performing an reindex to rename or cloning an index you can create an alias to the index.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Creating an alias<\/h2>\n\n\n\n<p>Here we are creating a new alias named account_alias to account index.&nbsp;<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">curl -X POST \"localhost:9200\/_aliases?pretty\" -H 'Content-Type: application\/json' -d'<\/pre>\n\n\n\n<pre class=\"wp-block-preformatted\">{\n  \"actions\" : [\n    { \"add\" : { \"index\" : \"account\", \"alias\" : \"account_alias\" } }\n  ]\n}'\n\n{\n  \"acknowledged\" : true\n}<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Using the alias<\/h2>\n\n\n\n<p>We can now use the name account_alias in place of account. account_alias can be used in all places where we use account and using either account or account_alias will yield the same result because they both are pointing to the same index.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\r\n[osboxes@wk1 ~]$ curl -X GET localhost:9200\/account\/_doc\/954?pretty\r\n{\r\n  \"_index\" : \"account\",\r\n  \"_type\" : \"_doc\",\r\n  \"_id\" : \"954\",\r\n  \"_version\" : 1,\r\n  \"_seq_no\" : 790,\r\n  \"_primary_term\" : 1,\r\n  \"found\" : true,\r\n  \"_source\" : {\r\n    \"account_number\" : 954,\r\n    \"balance\" : 49404,\r\n    \"firstname\" : \"Jenna\",\r\n    \"lastname\" : \"Martin\",\r\n    \"age\" : 22,\r\n    \"gender\" : \"M\",\r\n    \"address\" : \"688 Hart Street\",\r\n    \"employer\" : \"Zinca\",\r\n    \"email\" : \"jennamartin@zinca.com\",\r\n    \"city\" : \"Oasis\",\r\n    \"state\" : \"MD\"\r\n  }\r\n}\r\n[osboxes@wk1 ~]$ curl -X GET localhost:9200\/account_alias\/_doc\/954?pretty\r\n{\r\n  \"_index\" : \"account\",\r\n  \"_type\" : \"_doc\",\r\n  \"_id\" : \"954\",\r\n  \"_version\" : 1,\r\n  \"_seq_no\" : 790,\r\n  \"_primary_term\" : 1,\r\n  \"found\" : true,\r\n  \"_source\" : {\r\n    \"account_number\" : 954,\r\n    \"balance\" : 49404,\r\n    \"firstname\" : \"Jenna\",\r\n    \"lastname\" : \"Martin\",\r\n    \"age\" : 22,\r\n    \"gender\" : \"M\",\r\n    \"address\" : \"688 Hart Street\",\r\n    \"employer\" : \"Zinca\",\r\n    \"email\" : \"jennamartin@zinca.com\",\r\n    \"city\" : \"Oasis\",\r\n    \"state\" : \"MD\"\r\n  }\r\n}\r\n<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Removing an alias<\/h2>\n\n\n\n<p><\/p>\n\n\n\n<p>Note that when we remove an alias we specify remove under actions.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">curl -X POST \"localhost:9200\/_aliases?pretty\" -H 'Content-Type: application\/json' -d'\r\n{\r\n  \"actions\" : [\r\n    { \"<strong>remove<\/strong>\" : { \"index\" : \"account\", \"alias\" : \"account_alias\" } }\r\n  ]\r\n}'\r\n\r\n{\r\n  \"acknowledged\" : true\r\n}\r\n\r\n\r\n\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>An alias as the name suggests is an alias or another name to the index in Elasticsearch. It is quite useful when you want to refer<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[],"class_list":["post-2238","post","type-post","status-publish","format-standard","hentry","category-elasticsearch"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is an alias and how to create an alias in Elasticsearch? - Big Data In Real World<\/title>\n<meta name=\"description\" content=\"In this post we explain with examples what is an alias in Elasticsearch and how to create an alias with samples.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.bigdatainrealworld.com\/what-is-an-alias-and-how-to-create-an-alias-in-elasticsearch\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is an alias and how to create an alias in Elasticsearch? 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