一、操作系统初始化配置
### --- 关闭防火墙
[root@server11 ~]# systemctl stop firewalld.service
[root@server11 ~]# systemctl disable firewalld.service### --- 关闭selinux
[root@server11 ~]# sed -i 's/enforcing/disabled/' /etc/selinux/config #永久
[root@server11 ~]# setenforce 0 #临时### --- 关闭swap
[root@server11 ~]# swapoff -a #临时
[root@server11 ~]# sed -ri 's/.*swap.*/#&/' /etc/fstab #永久### --- 主机名
[root@server11 ~]# hostnamectl set-hostname k8s-master
[root@server12 ~]# hostnamectl set-hostname k8s-node1
[root@server13 ~]# hostnamectl set-hostname k8s-node2### --- 在master添加hosts：
[root@k8s-master ~]# cat >> /etc/hosts << EFO
> 10.10.10.11 k8s-master
> 10.10.10.12 k8s-node1
> 10.10.10.13 k8s-node2
> EFO### --- 将桥接的IPV4流量传递到iptables的链：
[root@k8s-master ~]# cat > /etc/sysctl.d/k8s.conf << EOF
> net.bridge.bridge-nf-call-ip6tables = 1
> net.bridge.bridge-nf-call-iptables = 1
> EOF
[root@k8s-node1 ~]# cat > /etc/sysctl.d/k8s.conf << EOF
> net.bridge.bridge-nf-call-ip6tables = 1
> net.bridge.bridge-nf-call-iptables = 1
> EOF
[root@k8s-node2 ~]# cat > /etc/sysctl.d/k8s.conf << EOF
> net.bridge.bridge-nf-call-ip6tables = 1
> net.bridge.bridge-nf-call-iptables = 1
> EOF
[root@k8s-master ~]# sysctl --system #生效
[root@k8s-node1 ~]# sysctl --system
[root@k8s-node2 ~]# sysctl --system### --- 时间同步
[root@k8s-master ~]# yum install -y ntpdate
[root@k8s-node1 ~]# yum install -y ntpdate
[root@k8s-node2 ~]# yum install -y ntpdate
[root@k8s-master ~]# ntpdate time.windows.com #设置当前时间和windows主机的时间一致
19 Feb 15:18:49 ntpdate[11137]: adjust time server 20.189.79.72 offset 0.069848 sec
[root@k8s-node1 ~]# ntpdate time.windows.com
19 Feb 15:18:53 ntpdate[10229]: adjust time server 20.189.79.72 offset 0.064745 sec
[root@k8s-node2 ~]# ntpdate time.windows.com
19 Feb 15:18:56 ntpdate[10286]: adjust time server 20.189.79.72 offset 0.070064 sec