elasticsearch index索引操作

比眉伴天荒 2022-11-15 11:49 246阅读 0赞

# elasticsearch index入门 #

### **新增索引** ###

curl -X PUT "localhost:9200/nba"
    
    { "acknowledged":true,"shards_acknowledged":true,"index":"nba"}

### **获取索引** ###

curl -X GET "localhost:9200/nba"
    curl -X GET "localhost:9200/nba?pretty"
    
    
    { 
      "nba" : { 
        "aliases" : {  },   # 别名
        "mappings" : {  },  # 映射,表结构
        "settings" : {      # 索引设置
          "index" : { 
            "creation_date" : "1617204049844",   # 创建时间
            "number_of_shards" : "1",            # 分片数量
            "number_of_replicas" : "1",          # 副本数量
            "uuid" : "CEcZpJ_pRAegRlyrZ9Fahg",   # uuid
            "version" : { 
              "created" : "7020199"
            },
            "provided_name" : "nba"
          }
        }
      }
    }

### **删除索引** ###

curl -X DELETE "localhost:9200/nba"
    
    { 
      "acknowledged" : true
    }

### 批量获取索引 ###

# 先建立两个index
    curl -X PUT "localhost:9200/nba"
    curl -X PUT "localhost:9200/cba"
    
    # 批量获取索引,get请求, 逗号隔开
    curl -X GET "localhost:9200/nba,cba"
    
    
    { 
      "cba" : { 
        "aliases" : {  },
        "mappings" : {  },
        "settings" : { 
          "index" : { 
            "creation_date" : "1617204418438",
            "number_of_shards" : "1",
            "number_of_replicas" : "1",
            "uuid" : "Z3WPJuw6TNy15x9383vLEg",
            "version" : { 
              "created" : "7020199"
            },
            "provided_name" : "cba"
          }
        }
      },
      "nba" : { 
        "aliases" : {  },
        "mappings" : {  },
        "settings" : { 
          "index" : { 
            "creation_date" : "1617204413931",
            "number_of_shards" : "1",
            "number_of_replicas" : "1",
            "uuid" : "KRg1pzXHTGKf6mG2pn5twg",
            "version" : { 
              "created" : "7020199"
            },
            "provided_name" : "nba"
          }
        }
      }
    }

### 获取全部索引 ###

curl -X GET "localhost:9200/_all"

### 获取全部索引,简要信息 ###

curl -X GET "localhost:9200/_cat/indices"
    
    yellow open cba Z3WPJuw6TNy15x9383vLEg 1 1 0 0 230b 230b
    yellow open nba KRg1pzXHTGKf6mG2pn5twg 1 1 0 0 230b 230b

### 判断索引是否存在 ###

# 第一种方法就是直接查index信息
    curl -X GET "localhost:9200/nba"
    
    # 第二种 使用head,如果存在则返回200,不存在则是404
    curl -I HEAD "localhost:9200/nba"
    curl -I HEAD "localhost:9200/nbax123"

### 关闭和开启索引 ###

# 当我们不想用了,但是又不想删除
    # 关闭
    curl -X POST "localhost:9200/nba/_close"
    { "acknowledged":true,"shards_acknowledged":true}
    # 开启
    curl -X POST "localhost:9200/nba/_open"
    { "acknowledged":true,"shards_acknowledged":true}
    
    # 再次查询
    curl -X GET "localhost:9200/nba"
    { 
      "nba" : { 
        "aliases" : {  },
        "mappings" : {  },
        "settings" : { 
          "index" : { 
            "verified_before_close" : "true", # 发现多一个字段,开启状态没有这个字段
            "number_of_shards" : "1",
            "provided_name" : "nba",
            "creation_date" : "1617204413931",
            "number_of_replicas" : "1",
            "uuid" : "KRg1pzXHTGKf6mG2pn5twg",
            "version" : { 
              "created" : "7020199"
            }
          }
        }
      }
    }