CentOS配置ip「快速配置」

1：查看网卡的DNS的配置文件:

注：不需要修改.

[root@localhost ~]# cat /etc/resolv.conf 
# Generated by NetworkManager
search lan
nameserver fd7b:ac2f:6d73::1

注：在重启网络服务[service network restart]后,

系统会自动使用[/etc/sysconfig/network-scripts/ifcfg-enp0s3]中eg:DNS1=8.8.8.8,

自动设置[/etc/resolv.conf]中nameserver的配置为eg:nameserver 8.8.8.8,

此为自动设置成功,手动设置,重启网络服务将被覆盖或者清空！

设置参数：

8.8.8.8 #google域名服务器 
8.8.4.4 #google域名服务器 
192.168.10.1 #网卡对应的网关的IP地址(默认网关)
255.255.255.0 #网卡对应的网络掩码(子网掩码)
192.168.10.56 #网卡对应的ip地址

2：修改网卡的网关的配置文件:

[root@localhost sysconfig]# pwd
/etc/sysconfig
[root@localhost sysconfig]# vim network
[root@localhost sysconfig]# cat network
# Created by anaconda
NETWORKING=yes 
HOSTNAME=CentOS-Slave1
NETWORKING_IPV6=no 
PEERNTP=no
GATEWAY=192.168.10.1 

注：设置本机的主机名,这里设置的主机名要/etc/sysconfig/network和/etc/hosts中设置的主机名对应一致(可选)

3：修改网卡的IP地址的配置文件：

[root@CentOS-Slave1 network-scripts]# pwd
/etc/sysconfig/network-scripts
[root@CentOS-Slave1 network-scripts]# vim ifcfg-enp0s3 
[root@CentOS-Slave1 network-scripts]# cat ifcfg-enp0s3 
DEVICE=enp0s3
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.10.56
NETMASK=255.255.255.0
DNS1=8.8.8.8 
DNS2=8.8.4.4 

centos7详细配置见,备注附件！

4：修改主机名配置文件：

注：手动增加ip和主机名,第三行.

[root@localhost etc]# pwd
/etc
[root@localhost etc]# vim hosts
[root@localhost etc]# cat hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.10.56 CentOS-Slave1

5：重启网络服务：

[root@localhost init.d]# service network restart
Restarting network (via systemctl): [ OK ]

6：再次查看网卡的DNS的配置文件：

[root@localhost init.d]# cat /etc/resolv.conf 
# Generated by NetworkManager
search lan lan.
nameserver 8.8.8.8
nameserver 8.8.4.4
nameserver fd7b:ac2f:6d73::1

注：DNS已经配置完毕！

7：查看主机名称[重启生效]：

[root@localhost init.d]# hostname
CentOS-Slave1

查看ip：

[root@CentOS-Slave1 /]# ifconfig
enp0s3: flags=4163 mtu 1500
 inet 192.168.10.56 netmask 255.255.255.0 broadcast 192.168.10.255
 inet6 fe80::a00:27ff:fe87:b3c0 prefixlen 64 scopeid 0x20
 ether 08:00:27:87:b3:c0 txqueuelen 1000 (Ethernet)
 RX packets 44075 bytes 47664947 (45.4 MiB)
 RX errors 0 dropped 0 overruns 0 frame 0
 TX packets 9704 bytes 1365665 (1.3 MiB)
 TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
 
lo: flags=73 mtu 65536
 inet 127.0.0.1 netmask 255.0.0.0
 inet6 ::1 prefixlen 128 scopeid 0x10
 loop txqueuelen 0 (Local Loopback)
 RX packets 3 bytes 303 (303.0 B)
 RX errors 0 dropped 0 overruns 0 frame 0
 TX packets 3 bytes 303 (303.0 B)
 TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

详细讲解ip配置查看：CentOS的ip设置/Ubuntu的ip设置:在Oracle VM VirtualBOX下CentOS 7/Ubuntu 系统设置网络：接入internet（上网）和 局域网 ip

备注附件：

DEVICE=enp0s3
TYPE=Ethernet
BOOTPROTO=static
ONBOOT=yes
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=enp0s3
UUID=f4ff103e-5adc-4456-b338-d66b1b63bb46
IPADDR=192.168.10.56
NETMASK=255.255.255.0
DNS1=8.8.8.8 
DNS2=8.8.4.4