How can I automatically restart Apache and Varnish if can't fetch a file?
- by Tyler
I need to restart Apache and Varnish and email some logs when the script can't fetch robots.txt but I am getting an error
./healthcheck: 43 [[: not found
My server is Ubuntu 12.04 64-bit
#!/bin/sh
# Check if can fetch robots.txt if not then restart Apache and Varnish
# Send last few lines of logs with date via email
PATH=/bin:/usr/bin
THEDIR=/tmp/web-server-health
[email protected]
mkdir -p $THEDIR
if ( wget --timeout=30 -q -P $THEDIR http://website.com/robots.txt )
then
# we are up
touch ~/.apache-was-up
else
# down! but if it was down already, don't keep spamming
if [[ -f ~/.apache-was-up ]]
then
# write a nice e-mail
echo -n "Web server down at " > $THEDIR/mail
date >> $THEDIR/mail
echo >> $THEDIR/mail
echo "Apache Log:" >> $THEDIR/mail
tail -n 30 /var/log/apache2/error.log >> $THEDIR/mail
echo >> $THEDIR/mail
echo "AUTH Log:" >> $THEDIR/mail
tail -n 30 /var/log/auth.log >> $THEDIR/mail
echo >> $THEDIR/mail
# kick apache
echo "Now kicking apache..." >> $THEDIR/mail
/etc/init.d/varnish stop >> $THEDIR/mail 2>&1
killall -9 varnishd >> $THEDIR/mail 2>&1
/etc/init.d/varnish start >> $THEDIR/mail 2>&1
/etc/init.d/apache2 stop >> $THEDIR/mail 2>&1
killall -9 apache2 >> $THEDIR/mail 2>&1
/etc/init.d/apache2 start >> $THEDIR/mail 2>&1
# prepare the mail
echo >> $THEDIR/mail
echo "Good luck troubleshooting!" >> $THEDIR/mail
# send the mail
sendemail -o message-content-type=html -f [email protected] -t $EMAIL -u ALARM -m < $THEDIR/mail
rm ~/.apache-was-up
fi
fi
rm -rf $THEDIR
