索引管理API

た入场券 2022-11-15 12:55 171阅读 0赞

1 open/close index 打开和关闭索引，不用的索引关闭索引后可以减少资源占用；

2 shrink index 缩小索引的主分片数；

3 spilit index 扩大索引的主分片数；

4 rollover index 为索引动态生成新的索引，像log4j的动态生成日志文件。

# 删除索引
    DELETE test
    
    #查看索引是否存在
    HEAD test
    
    #创建索引
    PUT test/_doc/3
    {
      "key":"value"
    }
    
    
    #关闭索引
    POST /test/_close
    
    
    # 无法查询
    POST test/_count
    
    #打开索引
    POST /test/_open
    
    #查看节点
    GET _cat/nodes
    
    #查看节点属性
    GET _cat/nodeattrs
    
    #删除索引
    DELETE my_source_index
    DELETE my_target_index
    
    #创建索引
    PUT my_source_index
    {
     "settings": {
       "number_of_shards": 4,
       "number_of_replicas": 0
     }
    }
    
    #写入一个文档
    PUT my_source_index/_doc/1
    {
      "key":"value"
    }
    
    #查看分片信息
    GET _cat/shards/my_source_index
    
    
    # shrink api缩小分片数 target分片数3会失败，必须小于原分片数且能被原分片数整除
    POST my_source_index/_shrink/my_target_index
    {
      "settings": {
        "index.number_of_replicas": 0,
        "index.number_of_shards": 3,
        "index.codec": "best_compression"
      },
      "aliases": {
        "my_search_indices": {}
      }
    }
    
    
    # 报错，因为没有置成 readonly
    POST my_source_index/_shrink/my_target_index
    {
      "settings": {
        "index.number_of_replicas": 0,
        "index.number_of_shards": 2,
        "index.codec": "best_compression"
      },
      "aliases": {
        "my_search_indices": {}
      }
    }
    
    
    #将 my_source_index 设置为只读
    PUT /my_source_index/_settings
    {
      "settings": {
        "index.blocks.write": true
      }
    }
    
    
    # 报错，必须都在一个节点
    POST my_source_index/_shrink/my_target_index
    {
      "settings": {
        "index.number_of_replicas": 0,
        "index.number_of_shards": 2,
        "index.codec": "best_compression"
      },
      "aliases": {
        "my_search_indices": {}
      }
    }
    
    # 删除索引
    DELETE my_source_index
    
    
    ## 确保分片都在 hot
    PUT my_source_index
    {
     "settings": {
       "number_of_shards": 4,
       "number_of_replicas": 0,
       "index.routing.allocation.include.my_node_type":"hot"
     }
    }
    
    
    PUT my_source_index/_doc/1
    {
      "key":"value"
    }
    
    #查看分片信息
    GET _cat/shards/my_source_index
    
    
    #设置为只读
    PUT /my_source_index/_settings
    {
      "settings": {
        "index.blocks.write": true
      }
    }
    
    使用shrink api缩小主分片数
    POST my_source_index/_shrink/my_target_index
    {
      "settings": {
        "index.number_of_replicas": 0,
        "index.number_of_shards": 2,
        "index.codec": "best_compression"
      },
      "aliases": {
        "my_search_indices": {}
      }
    }
    
    
    #查看分片信息
    GET _cat/shards/my_target_index
    
    
    
    # My target_index状态为也只读
    PUT my_target_index/_doc/1
    {
      "key":"value"
    }
    
    # 删除索引
    DELETE my_source_index
    DELETE my_target_index
    
    #新建索引
    PUT my_source_index
    {
     "settings": {
       "number_of_shards": 4,
       "number_of_replicas": 0
     }
    }
    
    PUT my_source_index/_doc/1
    {
      "key":"value"
    }
    
    #查看分片
    GET _cat/shards/my_source_index
    
    
    # spilit把原分片变多  数量必须是原分片的整数倍
    POST my_source_index/_split/my_target
    {
      "settings": {
        "index.number_of_shards": 10
      }
    }
    
    # spilit把原分片变多 必须是只读
    POST my_source_index/_split/my_target
    {
      "settings": {
        "index.number_of_shards": 8
      }
    }
    
    
    # spilit把原分片变多 设置为只读
    PUT /my_source_index/_settings
    {
      "settings": {
        "index.blocks.write": true
      }
    }
    
    # spilit把原分片变
    POST my_source_index/_split/my_target_index
    {
      "settings": {
        "index.number_of_shards": 8,
        "index.number_of_replicas":0
      }
    }
    
    # 查看分片信息
    GET _cat/shards/my_target_index
    
    
    # 目标索引也是只读 write block
    PUT my_target_index/_doc/1
    {
      "key":"value"
    }
    
    
    #删除索引
    DELETE nginx-logs*
    
    # 不设定 is_write_true
    # 名字符合命名规范 创建别名
    PUT /nginx-logs-000001
    {
      "aliases": {
        "nginx_logs_write": {}
      }
    }
    
    
    # 多次写入文档
    POST nginx_logs_write/_doc
    {
      "log":"something"
    }
    
    #满足条件自动生成新的索引按 nginx-logs-000001 数字递增
    POST /nginx_logs_write/_rollover
    {
      "conditions": {
        "max_age":   "1d",
        "max_docs":  5,
        "max_size":  "5gb"
      }
    }
    
    #查看文档数
    GET /nginx_logs_write/_count
    
    
    # 查看 别名信息已经用新生成的索引
    GET /nginx_logs_write
    
    #删除索引
    DELETE apache-logs*
    
    
    # 设置 is_write_index
    PUT apache-logs1
    {
      "aliases": {
        "apache_logs": {
          "is_write_index":true
        }
      }
    }
    
    #查看文档数
    POST apache_logs/_count
    
    #添加文档
    POST apache_logs/_doc
    {
      "key":"value"
    }
    
    
    # 自动生成索引 需要指定 target 的名字
    POST /apache_logs/_rollover/apache-logs8xxxx
    {
      "conditions": {
        "max_age":   "1d",
        "max_docs":  1,
        "max_size":  "5gb"
      }
    }
    
    
    
    # 查看 别名信息 多了新的索引
    GET /apache_logs