2020-k8s(一)安装k8s集群

主机初始化

安装常用组件包

yum install epel-release -y

yum   -y install conntrack netdate ntp ipvsadm ipset jq iptables curl sysstat wget vim git libseccomp  net-tools

jq 类似 python -m json.tools

关闭防火墙

systemctl  stop firewalld  && systemctl disable firewalld

yum install iptables-services  -y   

systemctl start iptables && systemctl enable iptables 

iptables -F

service iptables save

关闭 selinux

vi /etc/selinux/config

将SELINUX=enforcing改为SELINUX=disabled
设置后需要重启才能生效

reboot

升级内核

rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm
yum --disablerepo="*" --enablerepo="elrepo-kernel" list available

lt long-term 长期维护版本  ml 主线版本

yum --enablerepo=elrepo-kernel install kernel-lt

sudo awk -F\‘ ‘$1=="menuentry " {print i++ " : " $2}‘ /etc/grub2.cfg
grub2-set-default 0
grub2-mkconfig -o /boot/grub2/grub.cfg

2020-k8s(一)安装k8s集群

原文：https://www.cnblogs.com/leleyao/p/13288983.html