[kevml]

This solves the reachability problem. In Kubernetes clusters, as well as traditional virtulaized data center setups, it is possible to encounter a network partition pretty easily. If your assertion is that all nodes and pods running on those nodes are mutually reachable then we need to make sure that’s the case. Pinger makes sure that is true!

[aranair]

Hmm, in the case of node_exporters, prometheus can be configured to pull metrics every X interval and if the target is down it can be alerted through that way too right?

[seeker89]

Yes, but that just tests the connectivity prometheus -> node, which won't detect some network partitions, for example