RHEL / Red hat / Fedora / CentOS Linux Static IP Configuration
For static IP configuration you need to edit the following files using a text editor such as vi. Edit /etc/sysconfig/network as follows, enter:# cat /etc/sysconfig/network
Sample static ip configuration:
NETWORKING=yes HOSTNAME=server1.cyberciti.biz GATEWAY=192.168.1.254Edit /etc/sysconfig/network-scripts/ifcfg-eth0, enter:
# cat /etc/sysconfig/network-scripts/ifcfg-eth0
Sample static ip configuration:
# Intel Corporation 82573E Gigabit Ethernet Controller (Copper) DEVICE=eth0 BOOTPROTO=static DHCPCLASS= HWADDR=00:30:48:56:A6:2E IPADDR=192.168.1.10 NETMASK=255.255.255.0 ONBOOT=yesEdit /etc/resolv.conf and setup DNS servers, enter:
# cat /etc/resolv.conf
Sample static IP configurations:
search cyberciti.biz nameserver 192.168.1.254 nameserver 8.8.8.8 nameserver 202.54.2.5Finally, you need to restart the networking service, enter:
# /etc/init.d/network restart
To verify new static ip configuration for eth0, enter:
# ifconfig eth0
# route -n
# ping 192.168.1.254
# ping google.com
Debian / Ubuntu Linux Static IP Configuration
Edit /etc/hostname, enter:# cat /etc/hostname
Sample ip config:
server1.cyberciti.bizEdit /etc/network/interfaces, enter:
# cat /etc/network/interfaces
Sample static ip config:
iface eth0 inet static address 192.168.1.10 network 192.168.1.0 netmask 255.255.255.0 broadcast 192.168.1.255 gateway 192.168.1.254Edit /etc/resolv.conf and setup DNS servers, enter:
# cat /etc/resolv.conf
Sample dns static IP configurations:
search cyberciti.biz nameserver 192.168.1.254 nameserver 8.8.8.8 nameserver 202.54.2.5Finally, you need to restart the networking service under Debian / Ubuntu Linux, enter:
# /etc/init.d/networking restart
Type the following commands to verify your new setup, enter:
# ifconfig eth0
# route -n
# ping google.com
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