~~~ # 獲取某個索引信息 GET /library/_mapping # 獲取某個索引下某個type的映射信息 GET /library/_mapping/books # 獲取這個集群內所有的映射信息 GET /_all/_mapping # 獲取這個集群內某兩個或多個type的映射信息 GET /_all/_mapping/books,bank_account Hello hello are you you can call me if you want to come over for a little time and I have a lot of of them them and the other two are is # 更新修改Mapping映射 # 很遺憾,mapping一旦建立,就不能修改現有的字段映射 # 如果要推到現有的映射,你得重新建立一個索引,然后重新定義映射 # 然后把之前索引里的數據導入到新建立的索引里 # ------具體方法------- # 1. 給現有的索引定義一個別名,并且把現有的索引指向這個別名,運行步驟2 # 2. 運行: PUT /現有索引/_alias/別名A # 3. 新創建一個索引,定義好最新的映射 # 4. 將別名指向新的索引,并且取消之前索引的指向,運行步驟5 # 5. 運行 POST /_aliases { "actions": [ {"remove": {"index":"現有索引名", "alias":"別名A"}}, {"add": {"index":"新建索引名", "alias":"別名A"}} ] } # 注: 通過這幾個步驟就實現了索引的平滑過渡,并且是零停機的 # 刪除映射 DELETE /library/books DELETE /library/books/_mapping DELETE /library/_mapping/books ~~~