ubuntu official website: https://help.ubuntu.com/lts/serverguide/network-configuration.html
CentOS:
NIC information query:
dmesg | grep - in eth lspci | grep -i ethernet
card modules:
lsmod | grep 1000
Profile Path: / etc / sysconfig / network-sripts / ifcfg-eth0
1 the DEVICE = "eth0 " card Name 2 HWADDR = "" the MAC address, only one card can be omitted 3 NM_CONTROLLED = " NO " do not suffer other management software 4 ONBOOT = "YES" to start this interface by default 5 BOOTPROTO = none made ip manner, arranged to automatically obtain DHCP . 6 the IPADDR = 192.168 . 1.100 IP . 7 NETMASK = 255.255 . 255.0 subnet mask . 8 the nETWORK = 192.168 . 1.0 the first IP subnet change . 9 BROADCAST =192.168 . 1.255 broadcast address 10 the MTU = 1500 maximum transmission unit
is provided to automatically obtain an IP keys to just set 1,2,3,4,5
Restart the network interface:
/etc/init.d/network restart
DNS server IP View and definitions
Configuration file: / etc / resolv.conf nameserver 202.96 . 199.133 nameserver 202.106 . 196.115
check whether the DNS server to resolve: dig www.baidu.com
Modify the host name, and start to look at:
Modify / etc / sysconfig / network and / etc / hosts file / etc / sysconfig / Network: NETWORKING = yes HOSTNAME = WWW.localhost.localcentos / etc / hosts: 192.168 . 1.100 WWW.localhost.localcentos original content do not modify
the hostname command to view the host name
using the ping command to see whether the host name communication, and finally restart the server