In order to better understand the implications of DNS resolutions inside a cluster, we provided some packet capture on the resources deployed and analyze them with Wireshark.
For testing purposes, we used the following resources:
1 Node — AKS Public Cluster
- kubectl krew — With sniff plugin for deployment of static compiled tcpdump to desired Pod
The Pod used for the running queries has been created with the following manifest file:
— name: single-request-reopen
— name: ndots
— name: dnsutils