K8S服务器调教

1. 改服主机名：

   hostnamectl set-hostname K8S-master01
   

    

2. 将yum源换成aliyun的

首先备份原版/etc/yum.repos.d/CentOS-Base.repo

1. cd /etc/yum.repos.d
   

   sudo mv CentOS-Base.repo CentOS-Base.repo.bak
   

   在/etc/yum.repos.d目录下下载阿里云的CentOS-Base.repo

   sudo wget -O CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

2. 3、安装依赖包

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

   4、设置防火墙为iptables并设置空规则

   systemctl stop firewalld && systemctl disable firewalld
   

   yum -y install iptables-services && systemctl start iptables &&systemctl
   enable iptable && iptables -F && service iptables save