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talos/docs/website/content/v0.3/en/components/networkd.md
Brad Beam 91ac62389d docs: Add examples to networkd 
Add simple examples around static addressing and assigning multiple addresses
to a single interface.

Signed-off-by: Brad Beam <brad.beam@talos-systems.com>
2019-11-14 22:11:40 -08:00

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networkd

Networkd handles all of the host level network configuration. Configuration is defined under the networking key.

By default, we attempt to issue a DHCP request for every interface on the server. This can be overridden by supplying one of the following kernel arguments:

  • talos.network.interface.ignore - specify a list of interfaces to skip discovery on
  • ip - ip=<client-ip>:<server-ip>:<gw-ip>:<netmask>:<hostname>:<device>:<autoconf>:<dns0-ip>:<dns1-ip>:<ntp0-ip> as documented in the kernel here
    • ex, ip=10.0.0.99:::255.0.0.0:control-1:eth0:off:10.0.0.1

Examples

Documentation for the network section components can be found under the configuration reference.

Static Addressing

Static addressing is comprised of specifying cidr, routes ( remember to add your default gateway ), and interface. Most likely you'll also want to define the nameservers so you have properly functioning DNS.

machine:
  network:
    hostname: talos
    nameservers:
    - 10.0.0.1
    time:
      servers:
        - time.cloudflare.com
    interfaces:
    - interface: eth0
      cidr: 10.0.0.201/8
      mtu: 8765
      routes:
        - network: 0.0.0.0/0
          gateway: 10.0.0.1
    - interface: eth1
      ignore: true

Additional Addresses for an Interface

In some environments you may need to set additional addresses on an interface. In the following example, we set two additional addresses on the loopback interface.

machine:
  network:
    interfaces:
    - interface: lo0
      cidr: 192.168.0.21/24
    - interface: lo0
      cidr: 10.2.2.2/24