如何使用 Splunk 搜索中值延迟超过 3 秒的交易类型

Question

我有一个显示延迟数据的 table，现在我想编写一个警报查询，当请求（方法 + uri）的中值高于 3000 毫秒（3 秒）时发出警报

我用于延迟 table 的查询是：

index=ms-app  environment=prod AND "*"
| eval uri=replace(mvindex(split('request.uri', "?"), 0), "\/\d+[-+\w]+", "/:n"), methodOverride='request.headers.X-HTTP-Method-Override'
| eval methodOverrideStr = if(isnull(methodOverride) OR methodOverride=="null", "", "(" + methodOverride + ")")
| eval request = 'request.method' + methodOverrideStr + " " + uri + " " + 'response.httpStatusCode'
| stats
min(stats.overallResponseTimeInMilliSeconds) as "Min",
avg(stats.overallResponseTimeInMilliSeconds) as avg_latency,
max(stats.overallResponseTimeInMilliSeconds) as "Max",
median(stats.overallResponseTimeInMilliSeconds) as "Median",
perc95(stats.overallResponseTimeInMilliSeconds) as "95th %",
count(request) as "# req total", count(eval('stats.overallResponseTimeInMilliSeconds' > 3000)) as "#>3s",
count(eval('stats.overallResponseTimeInMilliSeconds' > 5000)) as "#>5s",
count(eval('stats.overallResponseTimeInMilliSeconds' > 10000)) as "#>10s" by request
| eval "Avg" = round(avg_latency, 0)
| table request, "Median"

这会产生一个 table 显示基于方法 + uri 的中值延迟例如：

POST /第一个端点 1000
GET /second-endpoint 2000
删除/第三端点 1500
POST/第四端点4000
获取/第五端点 4500

现在我正在尝试创建一个查询，该查询将仅显示具有高于 3 秒的高中值延迟的方法 +uris，以便我可以创建警报，以提醒 splunk 哪些端点具有高延迟这是我试过的：

index=ms-app  environment=prod AND "*"
| eval uri=replace(mvindex(split('request.uri', "?"), 0), "\/\d+[-+\w]+", "/:n"), methodOverride='request.headers.X-HTTP-Method-Override'
| eval methodOverrideStr = if(isnull(methodOverride) OR methodOverride=="null", "", "(" + methodOverride + ")")
| eval request = 'request.method' + methodOverrideStr + " " + uri + " " + 'response.httpStatusCode'
| stats
median(stats.overallResponseTimeInMilliSeconds) as "Median"
| table request, "Median" > 3000

应该显示这个：

POST/第四端点4000
获取/第五端点 4500

但是它只显示与第一个查询相同的结果

Answer 1

使用 where 命令根据字段值过滤事件。

... | where Median > 3000
| table request, Median

如何使用 Splunk 搜索中值延迟超过 3 秒的交易类型

How to Splunk search for transaction types that have a median latency above 3 seconds

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