[praseodym]

Kube-dns (or CoreDNS in newer clusters) is pretty stable in my experience. It's still a very good idea to run more than one replica so that you can tolerate a single node failure, but if DNS failures are "fairly normal" that definitely warrants some additional investigation.

[sleepybrett]

Most dns problems in kubernetes, in my experience, can be traced to udp failures due to the iptables kubeproxy backend.

[shamsalmon]

Thanks we did look into it but not as thoroughly as probably needed. Switching out from Alpine fixed pretty much all our issues.