Modify IP, DNS, and route settings in linux

 

Ifconfig eth0 new ip

Then edit/etc/sysconfig/network-scripts/ifcfg-eth0 and modify the ip

1. Modify the IP address

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

DEVICE = eth0

ONBOOT = yes

BOOTPROTO = static

IPADDR = 219.136.241.211

NETMASK = 255.255.255.255.128

GATEWAY = 219.136.241.254

 

 

2. Modify the Gateway

Vi/etc/sysconfig/network

NETWORKING = yes

HOSTNAME = Aaron

GATEWAY = 192.168.1.1

 

 

3. Modify DNS

[Aeolus @ db1 etc] $ vi resolv. conf

Nameserver 202.96.128.68

Nameserver 219.136.241.206

 

 

4. Restart the network configuration

/Etc/init. d/network restart

 

Modify IP Address

Effective immediately:

# Ifconfig eth0 192.168.0.20 netmask 255.255.255.0

Start effective:

Modify/etc/sysconfig/network-scripts/ifcfg-eth0

Modify the default gateway

Effective immediately:

# Route add default gw 192.168.0.254

Start effective:

Modify/etc/sysconfig/network-scripts/ifcfg-eth0

Modify dns

Modify/etc/resolv. conf

The modification takes effect immediately and starts as well.

 

Modify host name

Effective immediately:

# Hostname fc2

Start effective:

Modify/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