Thanks for all the replies, especially Brian Candler. I checked in
prometheus gui and its OK. There is only 5 samples run every 1 min, so
configuration in prometheus config works.
Then I change in Grafana Min Step opction to 1 min. And this is exactly
what I need on dashboard.
probe_duration_seconds{instance="https://ci-**************/login?from=%2F";,
job="blackbox-http-csci-prod"}[5m]
0.025146308 @1684485987.797
0.024791231 @1684486047.797
0.024754819 @1684486107.797
0.040065258 @1684486167.797
0.025109773 @1684486227.797
Many thanks
Best regards Paweł
On Friday, May 19, 2023 at 9:01:47 AM UTC+2 Brian Candler wrote:
> The way to determine for sure the scrape interval is to go to the
> Prometheus web interface expression editor, make sure you're in the Table
> view (not Graph view), and enter a range vector query like:
>
> probe_success[5m]
>
> This will show the raw stored data points in that time range, with their
> timestamps.
>
> As Ben says, if you're looking at something from Grafana then it's making
> a Range query to the API
> <https://prometheus.io/docs/prometheus/latest/querying/api/#range-queries>,
> where Grafana provides a start time, an end time, and a step. Prometheus
> will repeat the query at every step interval, giving the most recent value
> of the metric at each time (it's allowed to look back in time up to 5
> minutes to find a stored data point). Hence if Grafana asks for a 15
> second step but there's a 1 minute scrape interval you'll see the same
> value 4 times, which matches what you see.
>
> If you go to the Grafana data source settings page, you'll see the
> expected scrape interval is a setting you can adjust (and defaults to 15s)
>
> On Thursday, 18 May 2023 at 12:52:49 UTC+1 Paweł Błażejewski wrote:
>
>> Hello,
>>
>> Blackbox exporter http module check https site every 15s by default. Can
>> you please tell me Is it posible to change this interval to 1 minute. I add
>> scrape_interval parametr in prometheus config as you see below, but it
>> doesn't change anything. Samples are stiil every 15s.
>>
>> can you please tell me how and where change it.
>> I user prometheus 2.37.7, blackbox_exporter 0.23.0
>>
>> prometheus config:
>>
>> - job_name: 'blackbox-http-csci-prod'
>> scrape_interval: 60s
>> scrape_timeout: 50s
>> metrics_path: /blackbox/probe
>> params:
>> module: [http_2xx]
>> static_configs:
>> - targets:
>> - https://ci-jenkins***********/login?from=%2F
>> - https://ci-jenkins-***************l/login?from=%2F
>> - https://ci-**************/login?from=%2F
>> .
>> .
>> .
>> relabel_configs:
>> - source_labels: [*address*]
>> target_label: __param_target
>> - source_labels: [__param_target]
>> target_label: instance
>> - target_label: *address*
>>
>> Samples still every 15s.
>>
>> 2023-05-15 09:45:00
>> 0.0624
>> 2023-05-15 09:45:15
>> 0.0624
>> 2023-05-15 09:45:30
>> 0.0527
>> 2023-05-15 09:45:45
>> 0.0527
>> 2023-05-15 09:46:00
>> 0.0527
>> 2023-05-15 09:46:15
>> 0.0527
>> 2023-05-15 09:46:30
>> 0.0465
>> 2023-05-15 09:46:45
>> 0.0465
>> 2023-05-15 09:47:00
>> 0.0465
>> 2023-05-15 09:47:15
>> 0.0465
>> 2023-05-15 09:47:30
>> 0.0465
>> 2023-05-15 09:47:45
>> 0.0465
>>
>>
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