How to install varnish
This is a step-by-step on howto setup and run varnish web cache.
This was done for Linux RedHat 6 64bits, same works for CentOS 5.5 64bits with varnish 3.0
This install is made of Varnish and Apache.
Varnish will listen on port 0.0.0.0:80 and apache on localhost:8080
I have written other two howto’s on older version’s check them here:
1. Pre-Requisites,
Create user and folder,set permissions
# useradd varnish
# mkdir /opt/varnishadm
# chown varnish.root -R /opt/varnish/
Downlaod and install pre-requisites
# yum update
# yum -v -y install automake autoconf libtool gcc ncurses-devel libxslt groff pcre-devel pkgconfig httpd
-(Optional docutils, wget http://docutils.sourceforge.net/docutils-snapshot.tgz uncompress and run setup.py install)
2. Compile and Install
# ./configure –prefix=/opt/varnish –exec-prefix=/opt/varnish –bindir=/opt/varnish/bin –mandir=/usr/share/man –enable-stack-protector
# grep -i WARN config.log
(The only one I could not solve was configure: “WARNING: libedit not found, disabling libedit support”)
# make all
# make install
set Path
# export PATH=/opt/varnish/bin:/opt/varnish/sbin:$PATH
3. Set apache to listen on port 8080
# vim /etc/httpd/conf/httpd.conf
Change the line Listen 80 to:
Listen 127.0.0.1:8080
# service httpd restart
4. Fix the default.vcl
mv /opt/varnish/etc/varnish/default.vcl /opt/varnish/etc/default.vcl
# vim /opt/varnish/etc/default.vcl
uncomment the lines
backend default {
.host = “127.0.0.1”;
.port = “8080”;
}
5. Run the varnishd
# varnishd -f /opt/varnish/etc/default.vcl -s malloc,1G -T 127.0.0:1234 -a 0.0.0.0:80 -u varnish
Make sure its listening on correct port
# netstat -anp |grep varnishd
6.(optional) Set the firewall correctly
# iptables-save^C
# vim /etc/sysconfig/iptables
Add the line:
-A INPUT -m state –state NEW -m tcp -p tcp –dport 80 -j ACCEPT
# iptables-restore < /etc/sysconfig/iptables
# iptables
7. Test if all is working
Keep an eye if varnish is answering the conection
# varnishlog |grep -i -v ng
Go into a web browser and type the IP of the varnish/apache server
8. Optional (setup daemon)
The follow is what I currently use for a production enviroment:
COPY and PASTE
# vim /etc/init.d/varnish
#!/bin/bash
#
# chkconfig: 345 99 8
# cache: Starts Varnish Cache Service
# description: Varnish Reverse Cache for Web Sites
# process name: cache
# Source function library.
. /etc/init.d/functions
# Configurado por Felipe Ferreira @ 20/07/11
#Edit here to the name fo your .vcl FILE
SITEID=default
CONFIG="/opt/varnish/etc/varnish.conf" # not used
RETVAL=0
OPTIONS="
-f /opt/varnish/etc/$SITEID.vcl
-a 0.0.0.0:80
-l 512M
-s malloc,15g
-h classic,72227
-w 500,3000,30
-P /var/run/varnishd.pid
-t 120
-T :1234
-p connect_timeout=2
-p pipe_timeout=10
-p listen_depth=128
-p lru_interval=60
-p sess_workspace=32768
-p thread_pool_add_delay=1
-u varnish
-i $SITEID "
getpid() {
pid=`ps -ef | grep 'varnishd ' | grep -v grep |head -n 1 | awk '{print $2}'`
}
start() {
echo -n $"Starting Varnish Cache Daemon: "
getpid
if [ -z "$pid" ]; then
# in case of unclean shutdown
nohup /bin/su root -c "/opt/varnish/sbin/varnishd $OPTIONS"
RETVAL=$?
fi
if [ $RETVAL -eq 0 ]; then
echo_success
else
echo_failure
fi
echo
return $RETVAL
}
stop() {
echo -n $"Stoping Varnish Cache ID: $SITEID: "
getpid
RETVAL=$?
if [ -n "$pid" ]; then
kill $pid
sleep 6
getpid
if [ -z "$pid" ]; then
rm -f /var/run/$SITEID
echo_success
else
echo_failure
fi
else
echo_failure
fi
echo
return $RETVAL
}
# See how we were called.
case "$1" in
start)
start
;;
stop)
stop
;;
status)
getpid
echo $pid
if [ -n "$pid" ]; then
echo "Varnish Daemon $SITEID (pid $pid) is running..."
else
RETVAL=1
echo "Varnish $SITEID is stopped"
fi
;;
stats)
/opt/varnish/bin/varnishstat -1 |more
;;
restart)
stop
start
;;
*)
echo $"Usage: $0 {start|stop|status|stats|restart}"
exit 1
;;
esac
exit $RETVAL
# chmod +x /etc/init.d/varnish
# service varnish restart
# chkconfig –level 345 varnish on
Good
Ref. https://www.varnish-cache.org/docs/3.0/installation/install.html#compiling-varnish-from-source
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