http2 checks once per minute

templates/prometheus.yml.j2

@@ -295,6 +295,7 @@ scrape_configs:
 {%     endif %}
 {%     if blackbox_monitoring.http_2xx is defined %}
   - job_name: {{exporter}}_http_2xx
+    scrape_interval:     1m # Set the scrape interval to every 15 seconds. Default is every 1 minute.
     scheme: https
     tls_config:
         ca_file: '/etc/ssl/prometheus_client/root.ca.crt'