Elasticsearch学习笔记

# 查看
GET /_cat

# 查看Index
GET /_cat/indices?v

# 查看健康
GET /_cat/health?v

# 查看全部mapping
GET /_mapping?pretty=true


# 创建索引
PUT /customer?pretty

# 创建文档
PUT /customer/_doc/1?pretty
{
  "name": "John Doe"
}

# 根据ID查询文档
GET /customer/_doc/1?pretty

# 查询所有文档
GET /customer/_search?q=*&sort=name:asc&pretty

# 查看索引的mapping
GET /customer/_mapping?pretty=true

# 查看索引的settings
GET /customer/_settings?pretty=true


GET /bookdb_index/book/_search?q=guide

{
    "query": {
        "multi_match" : {
            "query" : "guide",
            "fields" : ["_all"]
        }
    }
}

查询2

# 查询
GET /crawl_log/_search/
{ 
  "query": {
    "match_all": {}
  }
}

# 基本匹配
GET /bookdb_index/book/_search?q=guide

GET /bookdb_index/book/_search
{
    "query": {
        "multi_match" : {
            "query" : "guide",
            "fields" : ["_all"]
        }
    }
}

# 词条查询
POST /bookdb_index/book/_search
{
    "query": {
        "term" : {
            "publisher": "manning"
        }
    },
    "_source" : ["title","publish_date","publisher"]
}

# 多词条查询
POST /bookdb_index/book/_search
{
    "query": {
        "terms" : {
            "publisher": ["oreilly", "packt"]
        }
    }
} 

# 排序
POST /bookdb_index/book/_search
{
    "query": {
        "term" : {
            "publisher": "manning"
        }
    },
    "_source" : ["title","publish_date","publisher"],
    "sort": [
        { "publish_date": {"order":"desc"}}
    ]
}

# 范围查询
POST /bookdb_index/book/_search
{
    "query": {
        "range" : {
            "publish_date": {
                "gte": "2015-01-01",
                "lte": "2015-12-31"
            }
        }
    },
    "_source" : ["title","publish_date","publisher"]
}

查询3

# match_all
POST /crawl_log/_search
{ 
  "query": {
    "match_all": {}
  }
}

# term
POST /crawl_log/_search
{
  "query":{
    "term":{
        "task_id":1
    }
  }
}

# from size
POST /crawl_log/_search
{
  "query":{
    "term":{
        "task_id":1
    },
  },
  "from": 10,
  "size": 10
}

# match
POST /crawl_log/_search
{
    "query": {
        "match": {
            "message": "中埃建交五十周年"
        }
    }
}

# match_phase
POST /crawl_log/_search
{
    "query": {
        "match_phase": {
            "message": "中埃建交五十周年"
        }
    }
}

日志查询

GET /crawl_log

GET /crawl_log/_search


POST /crawl_log/_search
{ 
  "query": {
    "match_all": {}
  }
}

POST /crawl_log/_search
{
  "query": {
    "bool": {
      "must": [{
          "term": {
            "task_id": "1"
          }
        },
        {
          "match": {
            "level_name": "INFO"
          }
        }
      ],
      "must_not": [],
      "should": []
    }
  },
  "from": 0,
  "size": 10,
  "sort": [],
  "aggs": {}
}

管理

# 创建一个索引
PUT twitte
{
    "settings" : {
        "number_of_shards" : 3,
        "number_of_replicas" : 2
    }
}

# 创建mapping映射
PUT twitte
{
    "settings" : {
        "index" : {
            "number_of_shards" : 3,
            "number_of_replicas" : 2
        }
    },
   "mappings" : {
        "type1" : {
            "properties" : {
                "field1" : { "type" : "text" }
            }
        }
    }
}

# 查看索引的定义信息
GET /twitte

# 删除索引
DELETE /twitte

别名

# 查看别名
GET /_cat/aliases

# 增加一个别名
POST /_aliases
{"actions": [{"add": {"index": "twitte", "alias": "alias1"}}]}

# 删除别名
POST /_aliases
{"actions": [{"remove": {"index": "twitte", "alias": "alias1"}}]}

# 一个别名对应多个索引
POST /_aliases
{"actions": {"add": {"indices": ["twitte", "twitte2"], "alias": "alias1"}}}

# 一个别名对应多个索引(通配符)
POST /_aliases
{"actions": [{"add": {"index": "twitte*", "alias": "alias1"}}]}

索引复制

POST /_reindex?slices=9&refresh&wait_for_completion=false

POST _reindex?wait_for_completion=false
{
  "source": {
      "index": "crawl_log" 
  },
  "dest": {
      "index": "crawl_log_bak"
  }
}

mapping

字符串: text和keyword
整数 : byte, short, integer, long
浮点数: float, double
布尔型: boolean
日期: date

# 创建索引
PUT /my-index
{
    "mappings" {
        "properties": {
            "age": {"type": "integer"},
            "email": {"type": "keyword"},
            "name": {"type": "text"}
        }
    }
}

# 添加字段
PUT /my-index/_mapping
{
    "properties": {
        "content": {"type": "text"}
    }
}

清空数据

# 清空索引
POST /policies_hydrabot/_delete_by_query?refresh&slices=5&pretty
{
  "query": {
    "match_all": {}
  }
}

Curl请求示例

curl -X GET 'http://localhost:9200/_cat/indices?v'
curl -X GET 'http://localhost:9200/_mapping?pretty=true'
curl -X GET 'http://localhost:9200/crawl_log/_mapping?pretty=true'

curl -X PUT 'localhost:9200/weather'

curl -X DELETE 'localhost:9200/weather'

curl -X PUT 'http://localhost:9200/accounts/person/1' \
-H 'Content-Type: application/json' \
-d '{
  "user": "张三",
  "title": "工程师",
  "desc": "数据库管理"
}' 


curl -X POST 'http://localhost:9200/accounts/person' \
-H 'Content-Type: application/json' \
-d '{
  "user": "李四",
  "title": "工程师",
  "desc": "系统管理"
}'


curl 'localhost:9200/accounts/person/1?pretty=true'
curl 'localhost:9200/weather/beijing/abc?pretty=true'

curl -X DELETE 'localhost:9200/accounts/person/1'

curl 'localhost:9200/accounts/person/_search'


curl 'localhost:9200/accounts/person/_search'  \
-H 'Content-Type: application/json' \
-d ' 
{
  "query" : { "match" : { "desc" : "软件" }}
}'