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This article introduces the relevant knowledge of "the process of network configuration of IP and host name in CentOS7 system". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

CentOS has just been updated to CentOS7 in recent days, so many users do not know how to install and configure CentOS7, especially the hostname and IP of CentOS7 are somewhat different from the previous version. So how does the CentOS7 system configure IP and hostname networks?

Tip: there is no visual interface for Centos7.

Enter the login interface

Enter the account number into root and enter enter.

Then enter the root password set above and enter enter.

System login succeeded

Set IP address, gateway DNS

Description: CentOS 7.0 is not automatically opened after the default installation of the network connection!

Cd / etc/sysconfig/network-scripts/ # enter the network profile directory

Vi ifcfg-eno16777736 # Edit the configuration file to add and modify the following

HWADDR=00:0C:29:8D:24:73

TYPE=Ethernet

BOOTPROTO=static # enable static IP address

DEFROUTE=yes

PEERDNS=yes

PEERROUTES=yes

IPV4_FAILURE_FATAL=no

IPV6INIT=yes

IPV6_AUTOCONF=yes

IPV6_DEFROUTE=yes

IPV6_PEERDNS=yes

IPV6_PEERROUTES=yes

IPV6_FAILURE_FATAL=no

NAME=eno16777736

UUID=ae0965e7-22b9-45aa-8ec9-3f0a20a85d11

ONBOOT=yes # enable automatically enable network connection

IPADDR0=192.168.21.128 # set IP address

PREFIXO0=24 # set the subnet mask

GATEWAY0=192.168.21.2 # set Gateway

DNS1=8.8.8.8 # set the main DNS

DNS2=8.8.4.4 # set backup DNS

: wq! # Save exit

Service network restart # restart the network

Ping http://www.xitongzhijia.net/ # tests whether the network is working

Ip addr # View IP address

Set the hostname to www

Hostname www # set the hostname to www

Vi / etc/hostname # Edit configuration file

Www # change localhost.localdomain to www

: wq! # Save exit

Vi / etc/hosts # Edit configuration file

127.0.0.1 localhost www # modify localhost.localdomain to www

: wq! # Save exit

Shutdown-r now # restart the system

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