Linux Netplan Networking

DerMeldos

Show running config:

rweigel@NODEBB0704:~$ netplan get
network:
  version: 2
  ethernets:
    ens18:
      addresses:
      - "10.73.0.168/16"
      nameservers:
        addresses:
        - 10.73.0.1
      gateway4: 10.73.0.1
      dhcp4: false

Netplans are stored under "/etc/netplan/"

rweigel@NODEBB0704:~$ ls /etc/netplan/
00-installer-config.yaml

rweigel@NODEBB0704:~$ cat /etc/netplan/00-installer-config.yaml 
# This is the network config written by 'subiquity'
network:
  ethernets:
    ens18:
      dhcp4: no
      addresses:
        - 10.73.0.168/16
      gateway4: 10.73.0.1
      nameservers:
          addresses: [10.73.0.1]
  version: 2

Adding a netplan:
The numbering is important for netplan processing order.

nano /etc/netplan/99-mysettings.yaml

Example Config;

network:
  ethernets:
    ens18:
      dhcp4: false
      dhcp6: false
      addresses:
        - 10.73.0.168/16
        - fe80::921b:eff:fe3d:abcd/64
      gateway4: 10.73.0.1
      nameservers:
          addresses: 
            - 10.73.0.1/16
            - 8.8.8.8
      routes: 
            - to: 172.16.155.0/24
              via 10.73.0.1
  version: 2

Permissions need to be changed so the config is not accessible by others:

chmod 600 /etc/netplan/99-mysettings.yaml

Commit Netplan changes:

netplan try  --timeout 30
netplan apply

Config Examples can be found under "/usr/share/doc/netplan/examples/"

rweigel@NODEBB0704:~$ ls /usr/share/doc/netplan/examples/
bonding_router.yaml  bridge.yaml           direct_connect_gateway_ipv6.yaml  loopback_interface.yaml  offload.yaml       source_routing.yaml  static_multiaddress.yaml                    vlan.yaml                 wireless.yaml
bonding.yaml         dhcp_wired8021x.yaml  direct_connect_gateway.yaml       modem.yaml               openvswitch.yaml   sriov_vlan.yaml      static_singlenic_multiip_multigateway.yaml  windows_dhcp_server.yaml  wpa_enterprise.yaml
bridge_vlan.yaml     dhcp.yaml             ipv6_tunnel.yaml                  network_manager.yaml     route_metric.yaml  sriov.yaml           static.yaml                                 wireguard.yaml
rweigel@NODEBB0704:~$