bundlewrap/bundles/wireguard/files/wg_health_check

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#!/bin/bash
if [[ -e "/var/lib/bundlewrap/hard-${node.name}/info" ]]
then
# make sure we're not restarting during bw apply
echo "bw apply running"
exit 0
fi
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now="$(date +%s)"
everything_up=1
% for peer, ip in sorted(peers.items()):
# ${peer}
if ! /usr/bin/ping -c 4 ${ip} >/dev/null 2>&1
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then
echo "${peer} was not reachable!"
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everything_up=0
fi
% endfor
if [[ "$everything_up" -eq 1 ]]
then
echo "Everything is up as expected"
echo "$now" > /var/tmp/wg_all_reached
exit 0
fi
five_min_ago="$(expr $now - 300)"
last_reached="$(cat /var/tmp/wg_all_reached)"
if [[ "$last_reached" -lt "$five_min_ago" ]]
then
echo "RESTART"
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systemctl restart systemd-networkd
# only restart once an hour
echo "$(expr $now + 3300)" > /var/tmp/wg_all_reached
elif [[ "$last_reached" -gt "$now" ]]
then
echo "Something's broken, but we have recently restarted"
else
echo "Something's broken, but still in grace time"
fi