k8s pod之间DNS解析问题:Temporary failure in name resolution

1.ubuntu 系统重启， k8s 网关需要

 

# 允许所有数据包通过

iptables -P FORWARD ACCEPT

 

2.查看coredns是否正常

kubectl get po -n kube-system | grep coredns

kubectl get service -n kube-system | grep kube-dns

kubectl get endpoints kube-dns -n kube-system