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#!/bin/bash

#A hot reconfiguration script would look like this :

#Extract from http://haproxy.1wt.eu/download/1.3/doc/architecture.txt

# save previous state

mv /etc/haproxy/config /etc/haproxy/config.old

mv /var/run/haproxy.pid /var/run/haproxy.pid.old

mv /etc/haproxy/config.new /etc/haproxy/config

kill -TTOU $(cat /var/run/haproxy.pid.old)

if haproxy -p /var/run/haproxy.pid -f /etc/haproxy/config; then

echo "New instance successfully loaded, stopping previous one."

kill -USR1 $(cat /var/run/haproxy.pid.old)

rm -f /var/run/haproxy.pid.old

exit 1

else

echo "New instance failed to start, resuming previous one."

kill -TTIN $(cat /var/run/haproxy.pid.old)

rm -f /var/run/haproxy.pid

mv /var/run/haproxy.pid.old /var/run/haproxy.pid

mv /etc/haproxy/config /etc/haproxy/config.new

mv /etc/haproxy/config.old /etc/haproxy/config

exit 0