#!/bin/sh
# 60-hostname.sh — Set system hostname

if [ -f "$DATA_MOUNT/etc-kubesolo/hostname" ]; then
    HOSTNAME="$(cat "$DATA_MOUNT/etc-kubesolo/hostname")"
elif [ -f /etc/kubesolo/hostname ]; then
    HOSTNAME="$(cat /etc/kubesolo/hostname)"
else
    # Generate hostname from MAC address of primary interface
    MAC_SUFFIX=""
    for iface in /sys/class/net/*; do
        iface="$(basename "$iface")"
        case "$iface" in lo|docker*|veth*|br*|cni*) continue ;; esac
        MAC_SUFFIX="$(cat "/sys/class/net/$iface/address" 2>/dev/null | tr -d ':' | tail -c 7)"
        break
    done
    HOSTNAME="kubesolo-${MAC_SUFFIX:-unknown}"
fi

hostname "$HOSTNAME"
echo "$HOSTNAME" > /etc/hostname
echo "127.0.0.1 $HOSTNAME" >> /etc/hosts

log_ok "Hostname set to: $HOSTNAME"