prometheus-blackbox-exporter

问题 We need to add results of two queries in Prometheus. Snippet is below: (probe_ssl_earliest_cert_expiry{job="SSL-expiry"} - time() < 86400 * 738 )*1000 + (node_time_seconds*1000) but the result says no data as shown below: 回答1: You will get an empty result if the metrics do not match. The reason is that for binary operator vector1 <op> vector2 vector1 and vector2 results in a vector consisting of the elements of vector1 for which there are elements in vector2 with exactly matching label sets.

问题 We need to add results of two queries in Prometheus. Snippet is below: (probe_ssl_earliest_cert_expiry{job="SSL-expiry"} - time() < 86400 * 738 )*1000 + (node_time_seconds*1000) but the result says no data as shown below: 回答1: You will get an empty result if the metrics do not match. The reason is that for binary operator vector1 <op> vector2 vector1 and vector2 results in a vector consisting of the elements of vector1 for which there are elements in vector2 with exactly matching label sets.

问题 We need to add results of two queries in Prometheus. Snippet is below: (probe_ssl_earliest_cert_expiry{job="SSL-expiry"} - time() < 86400 * 738 )*1000 + (node_time_seconds*1000) but the result says no data as shown below: 回答1: You will get an empty result if the metrics do not match. The reason is that for binary operator vector1 <op> vector2 vector1 and vector2 results in a vector consisting of the elements of vector1 for which there are elements in vector2 with exactly matching label sets.

问题 Given the following prometheus time series called requests : the vector query requests[3 seconds] is : and the rate of the vector query requests[3 seconds], rate(requests[3 sec]) (computed by the shown formula) is : My question is : what is sum(rate(requests[3 sec])) evaluated at seconds 5, 4 and 3 respectively is it 16.5, 6.5 and 1. Any idea? 回答1: You are misunderstanding the purpose of sum. It is not performing a sum over time but over the dimensions for your metric. In your example,

问题 Given the following prometheus time series called requests : the vector query requests[3 seconds] is : and the rate of the vector query requests[3 seconds], rate(requests[3 sec]) (computed by the shown formula) is : My question is : what is sum(rate(requests[3 sec])) evaluated at seconds 5, 4 and 3 respectively is it 16.5, 6.5 and 1. Any idea? 回答1: You are misunderstanding the purpose of sum. It is not performing a sum over time but over the dimensions for your metric. In your example,

问题 Given the following prometheus time series called requests : the vector query requests[3 seconds] is : and the rate of the vector query requests[3 seconds], rate(requests[3 sec]) (computed by the shown formula) is : My question is : what is sum(rate(requests[3 sec])) evaluated at seconds 5, 4 and 3 respectively is it 16.5, 6.5 and 1. Any idea? 回答1: You are misunderstanding the purpose of sum. It is not performing a sum over time but over the dimensions for your metric. In your example,

问题 The application I want to monitor provides an api endpoint for health checks that responds with metrics in json. As an example: $ curl https://example.com/api/stats {"status":"success","code":0,"data":{"UserCount":140,"UserCountActive":23}} I have setup the Prometheus blackbox_exporter to monitor that this endpoint returns 200 Ok however I'd ideally like to get those metrics too. I understand instrumentation exports this data directly from the application. But since the application is already