values.yaml

# ------------------------------------------------------------------------------
# Network boot server configuration
# ------------------------------------------------------------------------------
ltsp:

  config:

    # Extra options for ltsp.conf
    options:
      POST_INIT_NETWORKING: ". /etc/ltsp/network.sh"

    extraFiles:
      network.sh: |
        mask2cidr() {
          nbits=0
          IFS=.
          for dec in $1 ; do
            case $dec in
              255) nbits=$((nbits+8));;
              254) nbits=$((nbits+7));;
              252) nbits=$((nbits+6));;
              248) nbits=$((nbits+5));;
              240) nbits=$((nbits+4));;
              224) nbits=$((nbits+3));;
              192) nbits=$((nbits+2));;
              128) nbits=$((nbits+1));;
              0);;
              *) echo "Error: $dec is not recognised"; exit 1
            esac
          done
          echo "$nbits"
        }

        set -e
        # Load additional parameters
        IPCONFIG_IPV4CIDR=$(mask2cidr $IPCONFIG_IPV4NETMASK)
        DATA_IPV4ADDR=$(echo ${IPCONFIG_IPV4ADDR} | sed 's/^10\.28\./10.29./')

        # Remove on-boot config
        rm -rf /run/netplan

        # Write new netplan config
        mkdir -p /etc/netplan
        cat >/etc/netplan/00-config.yaml <<EOT
        network:
          version: 2
          renderer: networkd
          ethernets:
            eno1:
              mtu: 9000
              dhcp4: no
              optional: true
            eno1d1:
              mtu: 9000
              dhcp4: no
              optional: true
          bonds:
            bond0:
              mtu: 9000
              dhcp4: no
              macaddress: ${MAC_ADDRESS}
              interfaces: [eno1, eno1d1]
              parameters:
                mode: 802.3ad
                mii-monitor-interval: 100
                down-delay: 200
                up-delay: 200
                lacp-rate: fast
                transmit-hash-policy: layer3+4
                ad-select: bandwidth
              addresses: [${IPCONFIG_IPV4ADDR}/${IPCONFIG_IPV4CIDR}]
              gateway4: ${IPCONFIG_IPV4GATEWAY}
          vlans:
            bond0.2:
              addresses: [${DATA_IPV4ADDR}/${IPCONFIG_IPV4CIDR}]
              id: 2
              link: bond0
        EOT