k8s安装（v1.23.6）

安装初始环境

系统版本7.9 cpu 2c

主机节点	节点ip
master	192.168.20.122
node1	192.168.20.123
node2	192.168.20.124

1.修改主机名 方便后续区分（3台机器都添加信息 并独自修改自己的名字）

master

[root@localhost ~]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.20.122 master
192.168.20.123 node1
192.168.20.124 node2
[root@localhost ~]# hostname master
[root@localhost ~]# bash
[root@master ~]# 

node1

[root@localhost ~]# vim /etc/hosts
[root@localhost ~]# hostname node1
[root@localhost ~]# bash
[root@node1 ~]# 

node2

[root@localhost ~]# vim /etc/hosts
[root@localhost ~]# hostname node2
[root@localhost ~]# bash
[root@node2 ~]# 

2.免密登录

master操作

ssh-keygen

进行三次回车

ssh-copy-id -i root@node2
ssh-copy-id -i root@node3

3.关闭防火墙

3台全部操作

systemctl stop firewalld && systemctl disable firewalld

4.配置slinux并关闭swap分区

3台全部操作

[root@node2 ~]# setenforce 0
[root@node2 ~]# sed -ri 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config
[root@node2 ~]# getenforce 
Permissive

[root@master ~]# swapoff -a
[root@master ~]# sed -i '/swap/ s/^\(.*\)$/#\1/g' /etc/fstab
[root@node2 ~]# cat /etc/fstab 

#
# /etc/fstab
# Created by anaconda on Tue Sep 17 08:58:48 2024
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/centos-root /                       xfs     defaults        0 0
UUID=5c0b82f2-5f15-4e41-ab54-2da67e588397 /boot                   xfs     defaults        0 0
#/dev/mapper/centos-swap swap                    swap    defaults        0 0

5.安装一些软件

3台全部操作