k8s基础环境配置：基于CentOS7.9

0.虚拟机准备

wmware15安装centos7.9：https://www.cnblogs.com/uncleyong/p/15261742.html

 

1.配置静态ip

TYPE="Ethernet"
PROXY_METHOD="none"
BROWSER_ONLY="no"
BOOTPROTO="none"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="ens33"
UUID="67760d22-eb54-4a07-9f48-c2306c51c5d3"
DEVICE="ens33"
ONBOOT="yes"
IPADDR="192.168.117.161"
PREFIX="24"
GATEWAY="192.168.117.2"
DNS1="192.168.117.2"
IPV6_PRIVACY="no"

 

2.关闭防火墙

systemctl disable --now firewalld
systemctl disable --now dnsmasq
systemctl disable --now NetworkManager

　　

3.关闭selinux

setenforce 0
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/sysconfig/selinux
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/selinux/config

 

4.关闭交换分区

sed -ri '/^[^#]*swap/s@^@#@' /etc/fstab

 

5.修改yum源

curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo

 

6.修改内核参数

vim /etc/security/limits.conf
 

* soft nofile 65536
* hard nofile 131072
* soft nproc 65535
* hard nproc 655350
* soft memlock unlimited
* hard memlock unlimited

 

7.修改主机名

比如：hostnamectl set-hostname k8s-master01

 

8.配置hosts文件

vim /etc/hosts 

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
 
 
192.168.117.161 k8s-master01
192.168.117.162 k8s-node01
192.168.117.163 k8s-node02

 

9.安装常用工具

yum -y install net-tools nfs-utils lrzsz gcc gcc-c++ make cmake libxml2-devel openssl-devel curl curl-devel unzip sudo ntp libaio-devel wget vim ncurses-devel autoconf automake zlib-devel python-devel epel-release openssh-server socat ipvsadm conntrack ntpdate yum-utils device-mapper-persistent-data lvm2

 

10.同步时间　

rpm -ivh http://mirrors.wlnmp.com/centos/wlnmp-release-centos.noarch.rpm
 
yum install ntpdate -y

ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

echo 'Asia/Shanghai' >/etc/timezone

ntpdate time2.aliyun.com

*/5 * * * * /usr/sbin/ntpdate time2.aliyun.com

systemctl restart crond

 

11.升级系统及内核(4.x)

centos7.x默认内核是3.10

下载4.x的kernel-ml-deve和kernel-ml

安装：
yum localinstall -y kernel-ml*

 

更改内核启动顺序

grub2-set-default  0&& grub2-mkconfig -o /etc/grub2.cfg
grubby --args="user_namespace.enable=1" --update-kernel="$(grubby --default-kernel)"

 

reboot重启后，查看内核是否为升级后的：uname -a

 

12.安装docker

添加docker需要的yum源：yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

yum install docker-ce-19.03.15* docker-ce-cli-19.03.15* -y

mkdir /etc/docker

cd /etc/docker

vim daemon.json

{
  "exec-opts": ["native.cgroupdriver=systemd"]
}

启动：systemctl daemon-reload && systemctl enable --now docker && systemctl status docker

 

 

虚拟机已经安装配置好（如需要vof虚拟机模板文件，请微信联系作者）

 

【bak】

 

原文：https://www.cnblogs.com/uncleyong/p/15471002.html