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@wbailey
Created August 2, 2011 18:34
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A daemon to monitor and restart the solr server on our slave host
#!/bin/bash
url='http://www.sitetomonitor.com/provider_search?utf8=%E2%9C%93&search%5Bquery%5D=aba+therapist&search%5Blocation%5D=San+Francisco%2C+CA&commit=Search'
self=$(basename $0)
if [ -w "/var/run" ]; then
pidfile="/var/run/$self.pid"
else
pidfile="/tmp/$self.pid"
fi
if [ -w "/var/log" ]; then
logfile="/var/log/$self.log"
else
logfile="/tmp/$self.log"
fi
install_dir=/app/current
solr_pidfile=$install_dir/tmp/pids/production/sunspot-solr.pid
function log() {
echo "$(hostname) $(date): $1" >> $logfile
}
function tee() {
echo "$1"
log "$1"
}
function heartbeatd() {
while :
do
status=$(curl -sw "%{http_code}" -o /dev/null "$url")
if [ $status == "200" ]; then
log "200 OK"
sleep 15
else
log "Problem - Received ($status) code"
if [ -f $solr_pidfile ]; then
log 'restarting solr on host'
(cd $install_dir && kill -9 $(cat $solr_pidfile) && rake search:start RAILS_ENV=production)
sleep 60
fi
fi
done
}
case $1 in
start)
if [ -f $pidfile ]; then
ps $(cat $pidfile) 2>&1 > /dev/null
if [ $? -eq 0 ]; then
echo 'already running...exiting!'
exit
else
rm $pidfile
fi
fi
heartbeatd 2>&1 >> $logfile &
echo $! > $pidfile
tee "server started with pid $!"
;;
stop)
tee "Shutting down the server now"
if [ -f $pidfile ]; then
kill $(cat $pidfile) 2>&1 > /dev/null
if [ $? -eq 0 ]; then
rm $pidfile
tee 'complete'
exit 0
else
tee 'ERROR!'
tee 'Uable to stop server: kill manually'
tee "pidfile: $pidfile"
exit 1
fi
else
tee 'no pid file...exiting'
exit 1
fi
;;
status)
if [ -f $pidfile ]; then
ps $(cat $pidfile) 2>&1 > /dev/null
if [ $? -eq 0 ]; then
echo 'running'
fi
else
echo 'not running'
fi
;;
*)
echo 'usage: solr_heartbeatd [start|stop|status]'
exit 1
;;
esac
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