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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
fi