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elasticsearch - 弹性-检查给定时间范围内的所有值是否都大于阈值X

转载 作者:行者123 更新时间:2023-12-03 02:16:32 29 4
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我想使用 flex 查询在Kibana中创建警报。我正在使用opendistro警报功能。我想检查最近10分钟内cpu.pct字段的所有值是否大于50,如果是,则发出警报。

{
"size": 500,
"query": {
"bool": {
"filter": [
{
"match_all": {
"boost": 1
}
},
{
"match_phrase": {
"client.id": {
"query": "42",
"slop": 0,
"zero_terms_query": "NONE",
"boost": 1
}
}
},
{
"range": {
"cpu.pct": {
"from": 10,
"to": null,
"include_lower": true,
"include_upper": true,
"boost": 1
}
}
},
{
"range": {
"@timestamp": {
"from": "{{period_end}}||-5m",
"to": "{{period_end}}",
"include_lower": true,
"include_upper": true,
"format": "epoch_millis",
"boost": 1
}
}
}
],
"adjust_pure_negative": true,
"boost": 1
}
},
"aggregations": {
"2": {
"terms": {
"field": "client.name.keyword",
"size": 5,
"min_doc_count": 1,
"shard_min_doc_count": 0,
"show_term_doc_count_error": false,
"order": {
"_key": "desc"
}
},
"aggregations": {
"3": {
"terms": {
"field": "component.name",
"size": 1000,
"min_doc_count": 1,
"shard_min_doc_count": 0,
"show_term_doc_count_error": false,
"order": [
{
"1": "desc"
},
{
"_key": "asc"
}
]
},
"aggregations": {
"1": {
"avg": {
"field": "cpu.pct"
}
}
}
}
}
}
}
我有以下查询来计算平均值,但这是不正确的。
负数:值(100,100,100,100,100,100,0,0,0,0)|引发警报:否(平均:60)
积极案例:值(60,60,60,60,60,60,60,60,60,60,60)|发出警报:是(平均:60)
如何检查所有值?

最佳答案

我不确定您要使用哪个应用程序来触发警报。解决您的问题的一种方法是通过两个过滤器聚合:

  • totalInLast10Min:这是为了获取最近10分钟内被编制索引的文档总数。
  • totalInLast10MinAboveTh:这是为了获取最近10分钟内被编制索引的文档总数,并且该字段的值超过阈值。

  • 如果是 totalInLast10Min == totalInLast10MinAboveTh,则触发警报。
    例如。
    创建索引
    PUT test
    {
    "mappings": {
    "properties": {
    "timestamp": {
    "type": "date",
    "format": "yyyy-MM-dd HH:mm:ss"
    }
    }
    }
    }
    添加一些文档
    POST test/_doc
    {"cpu":20,"timestamp":"2020-08-18 20:20:00"}

    POST test/_doc
    {"cpu":100,"timestamp":"2020-08-18 20:21:00"}

    POST test/_doc
    {"cpu":90,"timestamp":"2020-08-18 20:29:00"}
    查询:
    GET test/_search
    {
    "size": 0,
    "aggs": {
    "totalInLast10Min": {
    "filter": {
    "range": {
    "timestamp": {
    "gte": "2020-08-18 20:20:00"
    }
    }
    }
    },
    "totalInLast10MinAboveTh": {
    "filter": {
    "bool": {
    "must": [
    {
    "range": {
    "timestamp": {
    "gte": "2020-08-18 20:20:00"
    }
    }
    },
    {
    "range": {
    "cpu": {
    "gte": 80
    }
    }
    }
    ]
    }
    }
    }
    }
    }
    样本结果:
    {
    "took" : 1,
    "timed_out" : false,
    "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
    },
    "hits" : {
    "total" : {
    "value" : 3,
    "relation" : "eq"
    },
    "max_score" : null,
    "hits" : [ ]
    },
    "aggregations" : {
    "totalInLast10MinAboveTh" : {
    "meta" : { },
    "doc_count" : 2
    },
    "totalInLast10Min" : {
    "meta" : { },
    "doc_count" : 3
    }
    }
    }
    基于这两个aggs的计数,您可以编写何时触发警报的条件。

    关于elasticsearch - 弹性-检查给定时间范围内的所有值是否都大于阈值X,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/63470114/

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