Create persistent device names for 1G and 10G interfaces using systemd

nic-name

#!/bin/bash
set -euo pipefail

BASENAME_1G=mgmt
BASENAME_10G=data
OUTPUT_PATH=/etc/systemd/network

current_nic_names=$(for iface in $(ls -1 /sys/class/net); do
    # Skip virtual devices, we only want physical
    [[ ! -e /sys/class/net/${iface}/device ]] && continue
    echo "${iface}"
done | tr '\n' ' ' || true)

index_1g=0
index_10g=0
for ifname in ${current_nic_names}; do
    port=$(ethtool ${ifname} | grep "Supported ports:" || true)
    if [[ ${port} =~ "TP" ]]; then
        cat <<-EOF > ${OUTPUT_PATH}/10-${BASENAME_1G}${index_1g}.link
			[Match]
			Path=pci-$(ethtool -i ${ifname} | grep --color=none bus-info | awk '{print $2}')

			[Link]
			Name=${BASENAME_1G}${index_1g}
		EOF
        (( index_1g++ )) || true
    elif [[ ${port} =~ "FIBRE" ]]; then
        cat <<-EOF > ${OUTPUT_PATH}/10-${BASENAME_10G}${index_10g}.link
			[Match]
			Path=pci-$(ethtool -i ${ifname} | grep --color=none bus-info | awk '{print $2}')

			[Link]
			Name=${BASENAME_10G}${index_10g}
		EOF
        (( index_10g++ )) || true
    fi
done