How to configure a VLAN

Generate a VLAN connection profile on a live host

Let’s configure NetworkManager to add a VLAN interface on top of the eth0 device with a VLAN ID = 1

Example: generate a VLAN connection profile with nmcli

  1. # nmcli connection add type vlan vlan.id 1 vlan.parent eth0

Example: retrieve VLAN connection profile keyfile content

  1. # cat /etc/NetworkManager/system-connections/vlan.nmconnection
  2. [connection]
  3. id=vlan
  4. uuid=7a9908f4-bed9-4401-8de4-4e7631b5d39e
  5. type=vlan
  7. [ethernet]
  9. [vlan]
  10. flags=1
  11. id=1
  12. parent=eth0
  14. [ipv4]
  15. method=auto
  17. [ipv6]
  18. addr-gen-mode=stable-privacy
  19. method=auto
  21. [proxy]

Elemental MachineRegistration with VLAN injected cloud-config

Example: MachineRegistration with injected VLAN connection profile

  1. apiVersion: elemental.cattle.io/v1beta1
  2. kind: MachineRegistration
  3. metadata:
  4.   name: fire-nodes
  5.   namespace: fleet-default
  6. spec:
  7.   config:
  8.     cloud-config:
  9.       users:
  10.         - name: root
  11.           passwd: root
  12.       write_files:
  13.         - content: |
  14.             [connection]
  15.             id=vlan
  16.             uuid=7a9908f4-bed9-4401-8de4-4e7631b5d39e
  17.             type=vlan
  19.             [vlan]
  20.             flags=1
  21.             id=1
  22.             parent=eth0
  24.             [ipv4]
  25.             method=auto
  27.             [ipv6]
  28.             addr-gen-mode=stable-privacy
  29.             method=auto
  30.        path: /etc/NetworkManager/system-connections/vlan.nmconnection
  31.        permissions: 600
  32. [...]