We’ve added the prometheus-blackbox-exporter as a K8s cluster addon which can be enabled upon request. The blackbox exporter can be used for probing HTTP(S), DNS, TCP and ICMP endpoints, for example to check whether an external resource is up/down.
Note: However it is possible to use the blackbox exporter to probe your application endpoints, we advise against using it for these purposes. Such checks should happen externally, for example by using Pingdom.