如何 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表，现在我想为警报编写一个查询，当请求(方法 + uri(的中位数高于 3000 毫秒(3 秒(时，该警报将发出警报

我用于该延迟表的查询是：

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"

这将生成一个表，显示基于方法 + uri 的中值延迟 例如：

• 开机自检/第一个端点 1000
• 获取/第二个端点 2000
• 删除/第三个端点 1500
• 开机自检/第四个端点 4000
• 获取/第五个终结点 4500

现在我正在尝试创建一个查询，该查询将仅显示中值延迟高于 3 秒的方法 +uri，以便我可以创建一个警报，以提醒 splunk 哪些端点具有高延迟 这是我尝试过的：

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

哪个应该显示这个：

• 开机自检/第四个端点 4000
• 获取/第五个终结点 4500

但是，它只显示与第一个查询相同的结果

Answer 1

使用where命令根据字段值筛选事件。

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