具有相关字段但标签不同的promql示例

Question

我正在使用普罗米修斯和格拉法纳，我正在试图跟踪一个web服务器应用程序。

我想以毫秒为单位绘制特定查询的平均持续时间。我想我可以从下面的数据到那里，但我在挣扎。

我的两组值：

rate(http_server_request_duration_seconds_sum[5m])

Element Value
{instance="dbserver:5000",job="control-tower",method="get",path="/api/control/v1/node/config.json"} 0.0010491088980113385
{instance="dbserver:5000",job="control-tower",method="get",path="/api/schedule/v1/programs/:id.json"}   0
{instance="dbserver:5000",job="control-tower",method="get",path="/api/schedule/v1/users.json"}  0
{instance="dbserver:5000",job="control-tower",method="get",path="/metrics"} 0.00009133616130826839
{instance="dbserver:5000",job="control-tower",method="post",path="/api/caption/v1/messages.json"}   0
{instance="dbserver:5000",job="control-tower",method="post",path="/api/caption/v1/sessions.json"}   0
{instance="dbserver:5000",job="control-tower",method="post",path="/api/schedule/v1/programs.json"}  0
{instance="dbserver:5000",job="control-tower",method="put",path="/api/caption/v1/sessions/captioners.json"} 0
{instance="dbserver:5000",job="control-tower",method="put",path="/api/control/v1/agents/:id.json"}


rate(http_server_requests_total[5m])

Element Value
{code="200",host="dbserver:5000",instance="dbserver:5000",job="control-tower",method="get",path="/api/control/v1/node/config.json"} 0.03511075688258612
{code="200",host="dbserver:5000",instance="dbserver:5000",job="control-tower",method="get",path="/api/schedule/v1/programs/:id.json"}   0
{code="200",host="dbserver:5000",instance="dbserver:5000",job="control-tower",method="get",path="/api/schedule/v1/users.json"}  0
{code="200",host="dbserver:5000",instance="dbserver:5000",job="control-tower",method="get",path="/metrics"} 0.06671043807691363
{code="200",host="dbserver:5000",instance="dbserver:5000",job="control-tower",method="post",path="/api/caption/v1/sessions.json"}   0
{code="200",host="dbserver:5000",instance="dbserver:5000",job="control-tower",method="post",path="/api/schedule/v1/programs.json"}  0
{code="200",host="dbserver:5000",instance="dbserver:5000",job="control-tower",method="put",path="/api/caption/v1/sessions/captioners.json"} 0
{code="200",host="dbserver:5000",instance="dbserver:5000",job="control-tower",method="put",path="/api/control/v1/agents/:id.json"}  0
{code="422",host="dbserver:5000",instance="dbserver:5000",job="control-tower",method="post",path="/api/schedule/v1/programs.json"}  0
{code="502",host="dbserver:5000",instance="dbserver:5000",job="control-tower",method="post",path="/api/caption/v1/messages.json"}

rate( http_server_request_duration_seconds_sum { path="/api/caption/v1/messages.json" }[5m])

{instance="dbserver:5000", job="control-tower", method="post", path="/api/caption/v1/messages.json"}    

但是分母可以有不同的返回码，所以我必须求和，我需要做一些忽略或on之类的事情，但我还没有找到一个例子来帮助我，我对此非常陌生。

有人吗？

Answer 1

好吧，我继续玩。因为我只担心一条路，所以我想我可以求和。我想这很管用：

sum( rate( http_server_request_duration_seconds_sum {path="/api/caption/v1/messages.json"}[2h])) / sum( rate( http_server_requests_total{ path="/api/caption/v1/messages.json"}[2h]))

我改变了采样率，因为我的采样数据从我的5分钟窗口中下降，我有零。

我想这是做的是求和率，这去掉了所有的标签。我认为它也在使用2小时的数据。我认为速率值是该值在2小时内变化的速度。