一、 kubernetes 环境准备

关闭防火墙

systemctl stop firewalld 
systemctl disable firewalld 

关闭selinux

sed -i 's/enforcing/disabled/' /etc/selinux/config  # 永久 
setenforce 0  # 临时 

关闭swap

swapoff -a  # 临时 
sed -ri 's/.*swap.*/#&/' /etc/fstab    # 永久 

根据规划设置主机名

hostnamectl set-hostname <hostname>  #推荐和下面hosts文件一致进行设置主机名

在master添加hosts

cat >> /etc/hosts << EOF 
192.168.2.103 k8s-master1 
192.168.2.100 k8s-node1 
192.168.2.101 k8s-node2 
EOF

将桥接的IPv4流量传递到iptables的链

cat > /etc/sysctl.d/k8s.conf << EOF 
net.bridge.bridge-nf-call-ip6tables = 1 
net.bridge.bridge-nf-call-iptables = 1 
EOF 
sysctl --system  # 生效 

时间同步

yum install ntpdate -y 
ntpdate time.windows.com