Elasticsearch语句

# 集群状态

GET _cluster/health

# 分片状态查看

GET /_cat/shards?v

# 查看unsigned 的原因

GET _cluster/allocation/explain

# 查看集群中不同节点、不同索引的状态

GET _cat/shards?h=index,shard,prirep,state,unassigned.reason

# 查看所有模板信息

GET _template

# 节点信息

GET _cat/nodes?v

# 索引信息

GET /_cat/indices?v 

# 机器存储信息

GET _cat/allocation?v

# 查看索引Mapping

GET index_123/_mapping

# 查看线程池

GET /_nodes/thread_pool

# 修改索引备份个数

PUT /index_*/_settings
{
"number_of_replicas" : 1
}

# 查询索引信息，根据Source返回

POST /index_123/_search?_source=field1,field2
{}

# 查看一个node上所有segment占用的memory总和

GET /_cat/segments
GET /_cat/nodes?v&h=name,port,sm
GET /_cat/segments/index_123?v

# 查看ElasticsearchJVM信息

GET /_nodes/stats/jvm

# 创建索引

PUT /index_123/_doc/1
{
  "a": "value1",
  "b": 213,
  "c": 1640762090
}

#搜索索引数据

POST /index_123/_search?from=10&size=3
POST /index_123/_search

# 删除索引

DELETE /index_*

# 删除索引

DELETE /index_123/_doc/1/_explain

# 索引备份

POST _reindex
{
  "source": {
    "index": "index_123"
  },
  "dest": {
    "index": "old_index_123"
  }
}

# 根据ID查询

GET /index_123/_doc/ca9c1a25-c5ee-416e-95aa-40dd9f7bd2c0

# 更新整个文档

PUT /index_123/_doc/1
{
  "a": "va1",
  "b": 321
}

# 更新字段

POST /index_123/_update/1?
{
  "doc": {
    "a": "va1",
    "b": 121
  }
}

# upsert插入

POST /index_123/_update/1/
{
  "script": {
    "source": "ctx._source.b += 1"
  },
  "upsert": {
    "b": 1
  }
}

# upsert插入

POST /index_123/_update/1
{
  "script": {
    "source": "ctx._source.b += 1"
  },
  "upsert": {
    "b": 1,
    "a": "sdf"
  }
}