Failover IP on Centos/Mageia/Fedora This documentation explains how to configure a failover IP on servers installed with CentOS, Mageia or Fedora Linux. Configuration on the Server 1. Copy the following file: # cp /etc/sysconfig/network-scripts/ifcfg-eth0 /etc/sysconfig/network-scripts/ifcfg-eth0:0 2. Modify the file /etc/sysconfig/network-scripts/ifcfg-eth0:0: DEVICE="eth0:0" BOOTPROTO=static IPADDR="my_failover_ip" NETMASK="255.255.255.255" ONBOOT=yes 3. Start the interface eth0:0 to activate the failover IP.