I install the k8s master with kubernetes binaries and the cluster works well.
But I face one strange problem.
Firstly, I run command
python -m SimpleHTTPServer 9999 in pod2.
And then I make a request in pod1
curl http://<pod2 ip>:9999
The result in pod2 shows like
Serving HTTP on 0.0.0.0 port 9999 ...
10.244.0.1 - - [01/Apr/2021 14:40:34] "GET / HTTP/1.1" 200 -
However, the actual ip of pod1 is 10.244.0.47.
And according to what I found, 10.244.0.1 is the ip address of cni0.
I don't know what caused this probelm.
Could Any one give me a hand?
Finally I found what caused this result.
The container I'm using is docker, which will default create iptable rules. And as a result, the traffic from docker will be changed and then snat will be done on the ip.
Adding "iptables": false to /etc/docker/daemon.json will solve this problem.