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build: autologout on SIGINT #2

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18 changes: 17 additions & 1 deletion bin/heroku-tailscale-start.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -97,7 +97,7 @@ main() {
run_cmd tailscaled -cleanup
fi

debug "[tailscale]: tailscaled --tun --socks5-server &"
debug "[tailscale]: tailscaled --tun --socks5-server --state=mem &"
# https://tailscale.com/kb/1111/ephemeral-nodes#faq
run_cmd tailscaled \
-verbose "${TAILSCALED_VERBOSE}" \
Expand All @@ -122,4 +122,20 @@ main() {
fi
}

#### AUTO LOGOUT ON SIGINT
# Adapted from https://thisisfranklin.com/2023/01/13/running-rails-on-flyio-with-tailscale.html
# Trap SIGINT so we gracefully shut down tailscale so node
# names don't collide upon deploy
pid=0
sigint_handler() {
if [ $pid -ne 0 ]; then
run_cmd tailscale logout
kill -SIGINT "$pid"
wait "$pid"
fi
exit 130; # 128 + 2 -- SIGINT
}
trap 'kill ${!}; sigint_handler' SIGINT
####

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