方法一.  yum安装

     yum install *rhsm*

方法二 （我是用这方法解决的）

     执行命令：

       ①   wget http://mirror.centos.org/centos/7/os/x86_64/Packages/python-rhsm-certificates-1.19.10-1.el7_4.x86_64.rpm

     ②   rpm2cpio python-rhsm-certificates-1.19.10-1.el7_4.x86_64.rpm | cpio -iv --to-stdout ./etc/rhsm/ca/redhat-uep.pem | tee /etc/rhsm/ca/redhat-uep.pem    

       前两个命令会生成/etc/rhsm/ca/redhat-uep.pem文件.     

       ③    docker pull registry.access.redhat.com/rhel7/pod-infrastructure:latest

此时kubectl get pods 会显示running状态

[root@docker-master1 ~]# kubectl get pods
NAME      READY     STATUS    RESTARTS   AGE
mynginx   1/1       Running   0          13m

# 删除POD
kubectl delete pod PODNAME --force --grace-period=0

# 删除NAMESPACE
kubectl delete namespace NAMESPACENAME --force --grace-period=0