无法从 AKS 中的 Pod ping 任何外部 IP

Question

I've an AKS cluster running but I cannot ping any external IP from a "simple" container:

> kubectl run -it --rm node --image=node:14.15.1-slim -- bash
root@node:/# apt update && apt -y install iputils-ping
root@node:/# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.

The last "PING"-line stalls forever. Any idea what causes the problem? I already added a load balancer because I read that it helped for some people but it didn't solved my issue...

Update

I can connect to any IP and the DNS also resolves. So it's fine for the first time. But I'm very interested why I cannot get any response from the ping. I guess something is blocking the ICMP messages.

Answer 1

using ping in bash without defining how many times it pings might be causing the stall, try:

ping 8.8.8.8 -c 3

to ping three times