|NO.Z.00309|——————————|CloudNative|——|KuberNetes&运维.V29|——|监控.v06|PromQL查询_函数|

一、Prometheus常用函数实例：查询kubelet_http_requests_total

二、查询表达式访问量：查询kubelet的访问量：

### --- 函数：无

~~~     表达式：kubelet_http_requests_total{endpoint="https-metrics",instance="192.168.1.11:10250",job="kubelet",long_running="false",method="GET",metrics_path="/metrics",namespace="kube-system",node="k8s-master01",path="metrics",server_type="readwrite",service="kubelet"}               
~~~     输出结果：4341：访问量为4341个

三、查询表达式1小时的访问量：查询kubelet近1小时的访问量：

### --- 函数：[1h]

~~~     表达式：kubelet_http_requests_total{endpoint="https-metrics",instance="192.168.1.11:10250",job="kubelet",long_running="false",method="GET",metrics_path="/metrics",namespace="kube-system",node="k8s-master01",path="metrics",server_type="readwrite",service="kubelet"}[1h]
~~~     输出结果：值为逐渐累加

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Walter Savage Landor:strove with none,for none was worth my strife.Nature I loved and, next to Nature, Art:I warm'd both hands before the fire of life.It sinks, and I am ready to depart

                                                                                                                                                   ——W.S.Landor

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