[root@master ~]# kubectl get nodes
No resources found.

解决方法:

所有节点:
1.关闭防火墙: 
systemctl stop firewalld
systemctl disable firewalld 

2.关闭selinux: 
sed -i 's/enforcing/disabled/' /etc/selinux/config 
setenforce 0 

3.关闭swap:  
swapoff -a 临时 
vim /etc/fstab 永久 

4.添加主机名与IP对应关系(记得设置主机名): 
cat /etc/hosts 
master 10.0.0.11
node1 10.0.0.12
node2 10.0.0.13

5.vim /usr/lib/systemd/system/docker.service
#在[Service]区域下增加一行
......
[Service]
ExecStartPost=/usr/sbin/iptables -P FORWARD ACCEPT
......

systemctl daemon-reload 
systemctl restart docker
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