• # check the connected interface - usually eth0 but could be eth1, this affects what file we want to edit
• ifconfig
• # backup the config file of that interface
• sudo cp /etc/sysconfig/network-scripts/ifcfg-eth0 /home/scotty/backup/ifcfg-eth0.backup
• # A Config File without a static IP will look like :

DEVICE=eth0
HWADDR=F4:CE:46:89:DD:D0
TYPE=Ethernet
UUID=1c4472a7-41a3-43bf-8b16-c0643976b2f8
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=dhcp

• # A config file with a static IP will look like :

DEVICE=eth0
TYPE=Ethernet
UUID=1c4472a7-41a3-43bf-8b16-c0643976b2f8
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=none
HWADDR=F4:CE:46:89:DD:D0
IPADDR=10.91.100.71
PREFIX=24
GATEWAY=10.91.100.1
DNS1=10.91.100.71
DNS2=10.5.5.15
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6INIT=no
NAME="System eth0"

• # make change as appropriate to the appropriate config file
• # save and exit
• # Be 100% confident with your changes - if you are not do not do this
• sudo service network restart
• # The server should now have the static ip you assigned it