This small script does install all necessary parts to get nginx, varnish and apache running on your CentOS:
yum install screen sysstat net-snmp htop rpm --nosignature -i http://repo.varnish-cache.org/redhat/el5/noarch/varnish-release-2.1-2.noarch.rpm yum install varnish wget http://download.fedora.redhat.com/pub/epel/5/x86_64/epel-release-5-4.noarch.rpm rpm -Uvh epel-release-5-4.noarch.rpm yum install nginx chkconfig varnish on chkconfig httpd on chkconfig nginx on vi /etc/nginx/nginx.conf vi /etc/nginx/conf.d/virtual.conf vi /etc/varnish/default.vcl vi /etc/httpd/conf/httpd.conf
