How to Configure a Failover IP on Ubuntu 18 server

[Redux]

HEEELP PLEAAASE GUYS
I tried to use many tutoriels to attach a failover ip address to my new VM using this conf but I cannot ping outside the vm even the GATEWAY_IP ( google dns servers)
could you help me please

network:
version: 2
renderer: networkd
ethernets:
ens18:
addresses: [FAILOVER_IP/32]
routes:
- to: 0.0.0.0/0
via: GATEWAY_IP_ADDRESS
on-link: true

 

[Redux]

hey guys I resolve it ,

Thanks

network:
  version: 2
  renderer: networkd
  ethernets:
    ens18:
      dhcp4: no
      dhcp6: no
      addresses:
          - FAILOVER_IP/32
      gateway4: TREE_PROXMOX_FIRST_octet.254
      optional: true
      routes:
         - to: TREE_PROXMOX_FIRST_octet.254/32
           via: 0.0.0.0
           scope: link

TREE_PROXMOX_FIRST_octet :  for example if your Proxmox ip  100.125.26.11
the gateway4 will be  100.125.26.254

 

[haricot]

hey guys I resolve it ,

Thanks

network:
  version: 2
  renderer: networkd
  ethernets:
    ens18:
      dhcp4: no
      dhcp6: no
      addresses:
          - FAILOVER_IP/32
      gateway4: TREE_PROXMOX_FIRST_octet.254
      optional: true
      routes:
         - to: TREE_PROXMOX_FIRST_octet.254/32
           via: 0.0.0.0
           scope: link

TREE_PROXMOX_FIRST_octet :  for example if your Proxmox ip  100.125.26.11
the gateway4 will be  100.125.26.254

Hi , could you copy/paste your host network configuration ? because it's not working on mine :-(
thank you

 

[Redux]

@haricot
this config is the same in my server, it's a yaml file, pay attention to the spaces between the lines and the properites.

( you can use YAML Validator)

Could you please share the error msg ?