Failover IP Configuration on /etc/network/interfaces
To assign a failover IP to a Linux virtual machine, you must correctly modify the /etc/network/interfaces network configuration file.
Here is a sample working configuration:
auto eth0
iface eth0 inet static
address 5.6.77.8
netmask 255.255.255.255
broadcast 5.6.77.8
post-up route add 123.4.5.254 dev eth0
post-up route add default gw 123.4.5.254
post-down route del default gw 123.4.5.254
post-down route del 123.4.5.254 dev eth0
Parameter details
- 5.6.77.8: failover IP assigned to the virtual machine
- 123.4.5.254: default gateway, typically the host IP ending in
.254
Important
Make sure to set the assigned MAC address directly on the virtual machine via the VSPHERE panel. Otherwise, the network will not function correctly.
