kubenetes安装

hostnamectl set-hostname master1
hostnamectl set-hostname node1
hostnamectl set-hostname node2

vim /etc/sysconfig/network- scripts/ifcfg-ens33 

systemctl restart network
ip a s

vim /etc/hosts
cat /etc/hosts

systemctl stop firewalld 
systemctl disable firewalld 
firewall-cmd --state

yum -y install ntpdate
crontab -l 0 */1 * * * ntpdate time1.aliyun.com
date

vim /etc/fstab   #在swap文件系统对应的行，行首添加#表示注释。

cat /etc/fstab

添加网桥过滤及地址转发
 [root@XXX ~]# cat /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
vm.swappiness = 0 

加载br_netfilter模块 
[root@XXX ~]# modprobe br_netfilter 
查看是否加载
[root@XXX ~]# lsmod | grep br_netfilter
br_netfilter 22256 0 
bridge 151336 1 br_netfilter
加载网桥过滤配置文件
[root@XXX ~]# sysctl -p /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
vm.swappiness = 0

yum -y install ipset ipvsadm

cat > /etc/sysconfig/modules/ipvs.modules <<EOF 
#!/bin/bash
modprobe -- ip_vs
modprobe -- ip_vs_rr
modprobe -- ip_vs_wrr
modprobe -- ip_vs_sh
modprobe -- nf_conntrack_ipv4
EOF

授权、运行、检查是否加载
[root@XXX ~]# chmod 755 /etc/sysconfig/modules/ipvs.modules && bash /etc/sysconfig/modules/ipvs.modules && lsmod | grep -e ip_vs -e nf_conntrack_ipv4

检查是否加载 [root@XXX ~]# lsmod | grep -e ipvs -e nf_conntrack_ipv4