foreword

For configuration and installation, please refer to the following two articles for details
https://cnxiaobai.com/articles/2021/04/21/1619011285612.html
https://cnxiaobai.com/articles/2021/10/21/1634800698273.html#b3_solo_h3_1There
are different aspects of network configuration. I have modified this operating system resource below. It took me
a long time to figure it out and share the pits I stepped on.
Network configuration: Original article https://cnxiaobai.com/articles/2021/04/21/1619011285612.html But it is not applicable to centos 8

The following are applicable toCentOS8

Modify the configuration file

Probably not. ens33My environment is Dragon Lizard. ens160If you do the same, please modify the ens160 configuration file

 vi /etc/sysconfig/network-scripts/ifcfg-ens33```

To see the content, just modify the remarks part

  TYPE=Ethernet
  PROXY_METHOD=none
  BROWSER_ONLY=no
  BOOTPROTO=static
  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=44d35e8e-6f13-4ef5-bd52-069e158666be
  DEVICE=ens33    -- 这个可能不同 但是不要改它
  ONBOOT=yes
  IPADDR=192.168.10.15
  NETMASK=255.255.255.0
  GATEWAY=192.168.10.2
  DNS1=223.6.6.6
  DNS2=223.5.5.5
  BOOTPROTO=dhcp 修改为 BOOTPROTO=static
  ONBOOT=no 修改为 ONBOOT=yes
  
  新增以下内容，其余配置项不变
  
  IPADDR=192.168.10.15
  NETMASK=255.255.255.0
  GATEWAY=192.168.10.2
  DNS1=223.6.6.6
  DNS2=223.5.5.5

Restart the network

  # systemctl restart network

1. How to restart the network on CentOS6:service network restart

2. How to restart the network on CentOS7:systemctl restart network

3. How to restart the network on CentOS8:

nmcli c reload

nmcli c reload [网卡名]

closure`selinux`

Change SELINUX=enforcing to SELINUX=disabled

# vim /etc/sysconfig/selinux

speed up `SSH`the connection

found #UseDNS yesand changed it toUseDNS no

  # vim /etc/ssh/sshd_config
 
  UseDNS no   - 我这个没有 我自己加上去了

Restart the ssh service

  # systemctl restart sshd

if not

1. First install the SSH service

yum install openssh-server

2. Start the SSH service

systemctl start sshd

3. View SSH service status

systemctl status sshd

4. Check the port

netstat -antp | grep sshd

5. Join the startup

systemctl enable sshd

6. Other common commands of SSH


#启动sshd服务
systemctl start sshd
 
#停止sshd服务
systemctl stop sshd
 
#重启sshd服务
systemctl restart sshd
 
#查看sshd服务的状态
systemctl status sshd
 
#sshd服务开机启动
systemctl enable sshd
 
#sshd服务禁止开机启动
systemctl disable sshd
 
#锁定sshd服务
systemctl mask sshd
 
#解锁sshd服务
systemctl unmask sshd
 
#重新加载sshd服务的配置文件

In the VMware Workstation Pro virtual machine environment, if the virtual machine needs to be connected to the Internet, the following operations need to be performed