Elasticsearch 7：获取 shard 统计信息


#Elasticsearch 笔记

使用GET _cat/shards/<index-name>?v 即可。

示例

数据准备

# 创建索引
PUT student
{
  "mappings" : {
    "properties" : {
      "uid": {
        "type" : "integer"
      },
      "name" : {
        "type" : "keyword"
      },
      "age" : {
        "type" : "integer"
      }
    }
  },
  "settings" : {
    "index" : {
      "number_of_shards" : 10,
      "number_of_replicas" : 1
    }
  }
}

# 插入数据
POST student/_doc/1?routing=1
{
  "uid": 1,
  "name": "张三",
  "age": 10
}

# 插入数据
POST student/_doc/2?routing=2
{
  "uid": 2,
  "name": "张三",
  "age": 10
}

查询每个 shard 的统计信息

请求：

GET _cat/shards/student?v

响应：

index   shard prirep state      docs store ip        node
student 2     p      STARTED       0  208b 127.0.0.1 DESKTOP-xxxxxx
student 2     r      UNASSIGNED                      
student 4     p      STARTED       0  208b 127.0.0.1 DESKTOP-xxxxxx
student 4     r      UNASSIGNED                      
student 8     p      STARTED       1 4.1kb 127.0.0.1 DESKTOP-xxxxxx
student 8     r      UNASSIGNED                      
student 7     p      STARTED       1 4.1kb 127.0.0.1 DESKTOP-xxxxxx
student 7     r      UNASSIGNED                      
student 6     p      STARTED       0  208b 127.0.0.1 DESKTOP-xxxxxx
student 6     r      UNASSIGNED                      
student 3     p      STARTED       0  208b 127.0.0.1 DESKTOP-xxxxxx
student 3     r      UNASSIGNED                      
student 5     p      STARTED       0  208b 127.0.0.1 DESKTOP-xxxxxx
student 5     r      UNASSIGNED                      
student 9     p      STARTED       0  208b 127.0.0.1 DESKTOP-xxxxxx
student 9     r      UNASSIGNED                      
student 1     p      STARTED       0  208b 127.0.0.1 DESKTOP-xxxxxx
student 1     r      UNASSIGNED                      
student 0     p      STARTED       0  208b 127.0.0.1 DESKTOP-xxxxxx
student 0     r      UNASSIGNED


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