我有一个提供此类服务的k8s集群：
$ kubectl get pods -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
oauth2-proxy-example-0 1/1 Running 2 13m 10.244.0.12 oauth2-proxy-control-plane <none> <none>
oauth2-proxy-example-postgresql-0 1/1 Running 0 13m 10.244.0.15 oauth2-proxy-control-plane <none> <none>
由于某些原因，例如从其他Pod中拒绝向IP发出卷曲：
curl -v 10.244.0.12:80 -o /dev/nul
* Expire in 0 ms for 6 (transfer 0x56369b6b0f50)
* Trying 10.244.0.12...
* TCP_NODELAY set
* Expire in 200 ms for 4 (transfer 0x56369b6b0f50)
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0* connect to 10.244.0.12 port 80 failed: Connection refused
* Failed to connect to 10.244.0.12 port 80: Connection refused
* Closing connection 0
curl: (7) Failed to connect to 10.244.0.12 port 80: Connection refused
kubectl get pods oauth2-proxy-example-0 -o yaml
https://pastebin.com/v6yRV0nM-这是输出（很抱歉，请直接在此处添加）
卷曲此pod IP可能是什么问题？