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

 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

4. kubectl get pods 会显示running状态

2.  error: resource(s) were provided, but no name, label selector, or --all flag specified

kubectl delete mynode-2559548524-266xp

# 加pod
kubectl delete pod mynode-2559548524-266xp

3. The connection to the server localhost:8080 was refused - did you specify the right host or port?

k8s服务没启动

# 单机启动

systemctl start etcd
systemctl start docker
systemctl start kube-apiserver
systemctl start kube-controller-manager
systemctl start kube-scheduler
systemctl start kubelet
systemctl start kube-proxy

4. k8s-node 执行  kubectl get pod,svc -o wide 等其他命令报下面错误

error: no configuration has been provided, try setting KUBERNETES_MASTER environment variable

解决方法:

把主节点的$HOME/.kube/config 复制到node节点的$HOME/.kube/config

可以通过scp直接拷贝过来( scp root@$masterIp:/root/.kube/config .)

(最终来源都是主节点的/etc/kubernetes/admin.conf )