linux下修改IP、DNS、路由设置

linux下修改IP、DNS、路由设置

ifconfig eth0 新ip

然后编辑/etc/sysconfig/network-scripts/ifcfg-eth0，修改ip
一、修改IP地址

[aeolus@db1 network-scripts]$ vi ifcfg-eth0

DEVICE=eth0

ONBOOT=yes

BOOTPROTO=static

IPADDR=219.136.241.211

NETMASK=255.255.255.128

GATEWAY=219.136.241.254

二修改网关

vi /etc/sysconfig/network

NETWORKING=yes

HOSTNAME=Aaron

GATEWAY=192.168.1.1

三修改DNS

[aeolus@db1 etc]$ vi resolv.conf

nameserver 202.96.128.68

nameserver 219.136.241.206

四重新启动网络配置

/etc/init.d/network restart

修改ip地址

即时生效:

# ifconfig eth0 192.168.0.20 netmask 255.255.255.0

启动生效:

修改/etc/sysconfig/network-scripts/ifcfg-eth0
修改default gateway

即时生效:

# route add default gw 192.168.0.254

启动生效:

修改/etc/sysconfig/network-scripts/ifcfg-eth0
修改dns

修改/etc/resolv.conf

修改后可即时生效，启动同样有效

修改host name

即时生效:

# hostname fc2

启动生效:

修改/etc/sysconfig/network

ps:
DEVICE=eth0

BOOTPROTO=static

IPADDR=192.168.8.85
NETMASK=255.255.248.0

GATEWAY=192.168.8.1
HWADDR=00:0uu3:47:2C:D5:40

ONBOOT=yes