CentOS Network Configuration method (manual setup, automatic acquisition)

First, the method of acquiring IP automatically:

1,/Etc/sysconfig/network-scripts/ifcfg-eth0

[Email protected] ~]# Cat/etc/sysconfig/network-scripts/ifcfg-eth0

Device=eth0//Initiated by eth0

hwaddr=00:0c:29:40:ec:61//mac Address

Type=ethernet

Uuid=9c6a7fc6-66ce-406d-993f-6ab26a730e72

Onboot=yes//Whether the network interface is valid when the system starts; default No

Nm_controlled=yes

BOOTPROTO=DHCP//Get IP mode, static is fixed ip,none is manual, DHCP is automatically acquired

2,/etc/sysconfig/network

[Email protected] ~]# cat/etc/sysconfig/network

Networking=yes

Hostname=smbserver

3,/etc/hosts

[Email protected] ~]# cat/etc/hosts

127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4

:: 1 localhost localhost.localdomain localhost6 localhost6.localdomain6

4,/etc/resolv.conf

[Email protected] ~]# cat/etc/resolv.conf

# Generated by NetworkManager

NameServer 202.96.128.86

NameServer 8.8.8.8//dns Service Address

Second, manually set IP, DNS

Manually set IP, DNS only need to modify three files on it.

1,/etc/sysconfig/network

[Email protected] network-scripts]$ cat/etc/sysconfig/network

Networking=yes

Networking_ipv6=yes

#HOSTNAME =localhost.localdomain//Why the host name is commented out, usually first resolve the hostname or domain name, and then resolve the DNS

gateway=192.168.1.1//Plus Gateway

2,/etc/sysconfig/network-scripts/ifcfg-eth0

[email protected] network-scripts]$ cat Ifcfg-eth0

# Marvell Technology Group Ltd. 88E8039 pci-e Fast Ethernet Controller

Device=eth0

Bootproto=none//Start for manual

broadcast=192.168.1.255

hwaddr=00:16:d3:a2:f6:09

ipaddr=192.168.1.108//Set of IP

netmask=255.255.255.0//Subnet mask

network=192.168.1.0

Ipv6init=yes

Ipv6_autoconf=yes

Onboot=yes

Type=ethernet//Network type

3,/etc/resolv.conf

[Email protected] network-scripts]$ cat/etc/resolv.conf

#; Generated By/sbin/dhclient-script

#nameserver 192.168.1.1

#search Localdomain

NameServer 116.228.111.118//Plus Primary DNS

NameServer 180.168.255.18//Plus secondary DNS

CentOS Network Configuration method (manual setup, automatic acquisition)