sudo apt install keepalived
# machine 1
vrrp_instance VI_1 {
state MASTER
interface br0
virtual_router_id 51
priority 150
advert_int 1
virtual_ipaddress {
192.168.122.240/24
}
}
# machine 2
vrrp_instance VI_1 {
state BACKUP
interface br0
virtual_router_id 51
priority 100
advert_int 1
virtual_ipaddress {
192.168.122.240/24
}
}