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#!/bin/bash
# Wake-on-LAN and shutdown script for f3s hosts (f0, f1, f2, f3)
# and optional shutdown for Raspberry Pi nodes (pi0–pi3)
#
# Before any shutdown of f3s Beelink hosts (f0/f1/f2/f3), this script will
# attempt to umount all NFS filesystems currently mounted on this machine
# (earth). NFS mounts here are tunnelled via stunnel (127.0.0.1:2323 →
# 192.168.1.138:2323 CARP VIP on f0/f1). If any NFS mount is active and
# cannot be umounted, the shutdown is aborted to prevent data loss or a
# hung filesystem.
#
# Usage:
# wol-f3s # Wake f0, f1, and f2
# wol-f3s f0 # Wake only f0
# wol-f3s f1 # Wake only f1
# wol-f3s f2 # Wake only f2
# wol-f3s f3 # Wake only f3
# wol-f3s shutdown # Shutdown f0, f1, and f2
# wol-f3s shutdown-f3 # Shutdown only f3
# wol-f3s shutdown-pis # Shutdown all four Raspberry Pis
# wol-f3s shutdown-all # Shutdown f0, f1, f2, and Pis
# MAC addresses
F0_MAC="e8:ff:1e:d7:1c:ac" # f0 (192.168.1.130)
F1_MAC="e8:ff:1e:d7:1e:44" # f1 (192.168.1.131)
F2_MAC="e8:ff:1e:d7:1c:a0" # f2 (192.168.1.132)
F3_MAC="e8:ff:1e:d7:f3:d7" # f3 (192.168.1.133)
# IP addresses
F0_IP="192.168.1.130"
F1_IP="192.168.1.131"
F2_IP="192.168.1.132"
F3_IP="192.168.1.133"
# Raspberry Pi IP addresses (no WoL support, shutdown only)
PI0_IP="192.168.1.125"
PI1_IP="192.168.1.126"
PI2_IP="192.168.1.127"
PI3_IP="192.168.1.128"
# SSH user
SSH_USER="paul"
# Broadcast address for your LAN
BROADCAST="192.168.1.255"
wake() {
local name=$1
local mac=$2
if [[ "$mac" == "XX:XX:XX:XX:XX:XX" ]]; then
echo "⚠️ $name MAC address not configured yet"
return 1
fi
echo "Sending WoL packet to $name ($mac)..."
wol -i "$BROADCAST" "$mac"
}
# umount_nfs_mounts tries to umount all currently mounted NFS filesystems on
# this local machine (earth). It reads /proc/mounts to find active nfs/nfs4
# mounts, attempts to umount each one, and returns 1 if any mount could not
# be umounted. This prevents shutting down f3s servers while NFS is still in
# use, which would leave the filesystem in a hung/stale state.
umount_nfs_mounts() {
# Collect all active NFS mount points from /proc/mounts (covers nfs and nfs4)
local nfs_mounts=()
while IFS= read -r mountpoint; do
nfs_mounts+=("$mountpoint")
done < <(awk '$3 ~ /^nfs/ { print $2 }' /proc/mounts)
if [[ ${#nfs_mounts[@]} -eq 0 ]]; then
echo " No NFS filesystems currently mounted — nothing to umount."
return 0
fi
local failed=0
for mp in "${nfs_mounts[@]}"; do
echo " Umounting NFS filesystem: $mp ..."
if umount "$mp" 2>/dev/null; then
echo " ✓ Umounted $mp"
else
# If it's no longer listed in /proc/mounts, it's already gone.
if ! grep -q "^[^ ]* $mp nfs" /proc/mounts; then
echo " ✓ $mp was already unmounted"
else
echo " ✗ Failed to umount $mp (in use or already unmounted?)"
failed=1
fi
fi
done
if [[ $failed -ne 0 ]]; then
echo ""
echo "✗ One or more NFS filesystems could not be umounted."
echo " Aborting shutdown to prevent data loss or a hung filesystem."
echo " Please check running processes that may have open files on NFS,"
echo " then retry."
return 1
fi
return 0
}
shutdown_host() {
local name=$1
local ip=$2
echo "Shutting down $name ($ip)..."
ssh -o ConnectTimeout=5 "$SSH_USER@$ip" "doas poweroff" 2>/dev/null && \
echo " ✓ Shutdown command sent to $name" || \
echo " ✗ Failed to reach $name (already down?)"
}
ACTION="${1:-all}"
case "$ACTION" in
f0)
wake "f0" "$F0_MAC"
;;
f1)
wake "f1" "$F1_MAC"
;;
f2)
wake "f2" "$F2_MAC"
;;
f3)
wake "f3" "$F3_MAC"
;;
all|"")
wake "f0" "$F0_MAC"
wake "f1" "$F1_MAC"
wake "f2" "$F2_MAC"
;;
shutdown|poweroff|down)
# Umount local NFS filesystems first; abort if any are stuck.
# The NFS mounts on earth tunnel through stunnel to the f3s CARP VIP,
# so they will hang or corrupt if the servers go down while mounted.
echo "Checking for locally mounted NFS filesystems..."
umount_nfs_mounts || exit 1
# Mute Gogios monitoring alerts for a day on both OpenBSD gateways
ssh rex@blowfish.buetow.org touch /tmp/f3s_taken_down
ssh rex@fishfinger.buetow.org touch /tmp/f3s_taken_down
shutdown_host "f0" "$F0_IP"
shutdown_host "f1" "$F1_IP"
shutdown_host "f2" "$F2_IP"
echo ""
echo "✓ Shutdown commands sent to all Beelinks."
exit 0
;;
shutdown-f3|poweroff-f3|down-f3)
# Umount local NFS filesystems first; abort if any are stuck.
# f3 does not host the NFS CARP VIP (that is f0/f1), but umounting
# first is still the safe default to avoid stale state.
echo "Checking for locally mounted NFS filesystems..."
umount_nfs_mounts || exit 1
shutdown_host "f3" "$F3_IP"
echo ""
echo "✓ Shutdown command sent to f3."
exit 0
;;
shutdown-pis)
# Raspberry Pis do not serve NFS, so no umount check is needed here.
shutdown_host "pi0" "$PI0_IP"
shutdown_host "pi1" "$PI1_IP"
shutdown_host "pi2" "$PI2_IP"
shutdown_host "pi3" "$PI3_IP"
echo ""
echo "✓ Shutdown commands sent to all Pis."
exit 0
;;
shutdown-all)
# Umount local NFS filesystems first; abort if any are stuck.
# The NFS mounts on earth tunnel through stunnel to the f3s CARP VIP,
# so they will hang or corrupt if the servers go down while mounted.
echo "Checking for locally mounted NFS filesystems..."
umount_nfs_mounts || exit 1
# Mute Gogios monitoring alerts for a day on both OpenBSD gateways
ssh rex@blowfish.buetow.org touch /tmp/f3s_taken_down
ssh rex@fishfinger.buetow.org touch /tmp/f3s_taken_down
shutdown_host "f0" "$F0_IP"
shutdown_host "f1" "$F1_IP"
shutdown_host "f2" "$F2_IP"
shutdown_host "pi0" "$PI0_IP"
shutdown_host "pi1" "$PI1_IP"
shutdown_host "pi2" "$PI2_IP"
shutdown_host "pi3" "$PI3_IP"
echo ""
echo "✓ Shutdown commands sent to all machines."
exit 0
;;
*)
echo "Usage: $0 [f0|f1|f2|f3|all|shutdown|shutdown-f3|shutdown-pis|shutdown-all]"
exit 1
;;
esac
echo ""
echo "✓ WoL packets sent. Machines should boot in a few seconds."
echo " Wait ~30 seconds, then try: ssh paul@192.168.1.130"
|
