k8s:open /etc/docker/certs.d/registry.access.redhat.com/redhat-ca.crt: no such file or directory解决

方法一  yum安装

     yum install *rhsm*

    安装之后执行：docker pull registry.access.redhat.com/rhel7/pod-infrastructure:latest

    还是会报错，看方法二

方法二

     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

来源：https://my.oschina.net/u/3852748/blog/3131722