Centos7部署kubernetes准备工作(一)

一、准备工作：

1、创建三台虚拟机：(在node1配置好环境，然后关机克隆出node2、node3、并修改网卡、主机名即可）

linux-node1.example.com 192.168.43.21

linux-node2.example.com 192.168.43.22

linux-node3.example.com 192.168.43.23

设置主机名：

[root@linux-node1 ~]# hostnamectl set-hostname linux-node1.example.com

2、配置IP：

[root@linux-node1 ~]# cat /etc/sysconfig/network-scripts/ifcfg-ens32

TYPE=Ethernet

BOOTPROTO=static

NAME=ens32

DEVICE=ens32

ONBOOT=yes

IPADDR=192.168.43.21

NETMASK=255.255.255.0

GATEWAY=192.168.43.2

DNS1=192.168.43.2

3、关闭NetworkManager、firewalld、selinux等

[root@linux-node1 ~]# systemctl disable NetworkManager

[root@linux-node1 ~]# systemctl disable firewalld

[root@linux-node1 ~]# vim /etc/selinux/config ---->SELINUX=enforcing

4、设置主机名解析：

[root@linux-node1 ~]# cat /etc/hosts

127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4

::1 localhost localhost.localdomain localhost6 localhost6.localdomain6

192.168.43.21 linux-node1 linux-node1.example.com

192.168.43.22 linux-node2 linux-node2.example.com

192.168.43.23 linux-node3 linux-node3.example.com

5、安装epel扩展源和常用的命令

[root@linux-node1 ~]# rpm -ivh http://mirrors.aliyun.com/epel/epel-release-latest-7.noarch.rpm

[root@linux-node1 ~]# yum install -y net-tools vim lrzsz tree screenlsof tcpdumpnc mtr nmap

6、安装Docker

[root@linux-node1 ~]# cd /etc/yum.repos.d/

[root@linux-node1 yum.repos.d]# wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

[root@linux-node1 yum.repos.d]# yum install -y docker-ce

[root@linux-node1 yum.repos.d]# systemctl start docker

[root@linux-node1 yum.repos.d]# systemctl enabled docker

7、创建部署目录

[root@linux-node1 ~]# mkdir -p /opt/kubernetes/{cfg,bin,ssl,log} #cfg存放配置文件；bin存放二进制文件；ssl存放证书文件；log存放日志文件。

8、关机---克隆出两台linux-node2、linux-node3并修改主机名、网卡

linux-node2：

[root@linux-node1 ~]# shutdown -h now

[root@linux-node1 ~]# hostnamectl set-hostname linux-node2.example.com #修改主机名

[root@linux-node1 ~]# su -

[root@linux-node2 ~]# hostnamectl

Static hostname: linux-node2.example.com

Icon name: computer-vm

Chassis: vm

Machine ID: 09bb654cb3f7445e9a9abd9dd32b9e2c

Boot ID: 939c901cfa7246dda1e90946ac6f3b08

Virtualization: vmware

Operating System: CentOS Linux 7 (Core)

CPE OS Name: cpe:/o:centos:centos:7

Kernel: Linux 3.10.0-693.el7.x86_64

Architecture: x86-64

[root@linux-node2 ~]# cat /etc/sysconfig/network-scripts/ifcfg-ens32

TYPE=Ethernet

BOOTPROTO=static

NAME=ens32

DEVICE=ens32

ONBOOT=yes

IPADDR=192.168.43.22

NETMASK=255.255.255.0

GATEWAY=192.168.43.2

DNS1=192.168.43.2

 

linux-node3：

[root@linux-node1 ~]# hostnamectl set-hostname linux-node3.example.com #修改主机名

[root@linux-node1 ~]# su -

[root@linux-node3 ~]# hostnamectl

Static hostname: linux-node3.example.com

Icon name: computer-vm

Chassis: vm

Machine ID: 09bb654cb3f7445e9a9abd9dd32b9e2c

Boot ID: 939c901cfa7246dda1e90946ac6f3b08

Virtualization: vmware

Operating System: CentOS Linux 7 (Core)

CPE OS Name: cpe:/o:centos:centos:7

Kernel: Linux 3.10.0-693.el7.x86_64

Architecture: x86-64

[root@linux-node3 ~]# cat /etc/sysconfig/network-scripts/ifcfg-ens32

TYPE=Ethernet

BOOTPROTO=static

NAME=ens32

DEVICE=ens32

ONBOOT=yes

IPADDR=192.168.43.23

NETMASK=255.255.255.0

GATEWAY=192.168.43.2

DNS1=192.168.43.2