I have installed Cacti several times and it is a somewhat tedious process on a new system so I thought I would just build a small bash script to perform the install for me. This script will install everything needed by Cacti including rrdtool so you will go from a blank system to a full Cacti install in only a few minutes. All you have to do is run this script as root and then open a browser and log into the Cacti server at http://ServerIP/cacti and follow the prompts. RRDtool is installed in /usr/local/rrdtool/bin/ so you will have to change that on the prerequisites page when you get to it. I used this blog to walk through the steps while I was creating the script. Here is the script:
# Cacti Install Script
# This script should work on all RHEL/CentOS 6.x systems but was built and tested
# on a CentOS 6 system installed with the minimal CD.
# By: Chris Adams
# linuxchris@gmail.com
#
# Modify the password variables below to match what you want
MYSQLPASS=’PASSWORD999′
CACTIPASS=’PASSWORD111′
CACTIVERSION=`wget -qO- www.cacti.net| grep “latest version” | sed ‘s/<[^>]*>//g’ | awk ‘{print $NF}’`
RRDVERSION=1.4.5
PKG_CONFIG_PATH=/usr/lib/pkgconfig/
CACTITMP=/tmp/cactisql.tmp
SERVERS=(mysqld httpd ntpd)
OFFSERVERS=(iptables ip6tables)
# Centos Minimal needs these added
yum install httpd php php-mysql php-snmp php-xml mysql mysql-server \
cairo-devel libxml2-devel pango-devel pango libpng-devel freetype \
freetype-devel libart_lgpl-devel net-snmp-utils gcc wget man make \
perl-CPAN perl-ExtUtils-MakeMaker perl-ExtUtils-MakeMaker-Coverage \
crontabs xorg-x11-fonts-100dpi xorg-x11-fonts-Type1 xorg-x11-fonts-75dpi \
ntp
#Disable SELinux and the local firewall
sed -i -e “s/^SELINUX\=enforcing/SELINUX\=disabled//” /etc/selinux/config
for i in ${OFFSERVERS[@]}; do
echo “Starting ${i}\n”
chkconfig ${i} off
service ${i} stop
done
#Turn onn and enable the needed servers to start at boot
for i in ${SERVERS[@]}; do
echo “Starting ${i}\n”
chkconfig ${i} on
service ${i} start
done
# Add teh fonts we installed to the font cache for Apache to use
fc-cache -vfs
# Download the latest rrdtool and store in /opt
cd /opt
wget http://oss.oetiker.ch/rrdtool/pub/rrdtool.tar.gz
tar -xzf rrdtool.tar.gz
cd rrdtool-$RRDVERSION
#Build and install rrdtool
./configure && make && make install
cd /usr/local
ln -s /opt/rrdtool-$RRDVERSION rrdtool
#Set Mysql password for root
mysqladmin –user=root password $MYSQLPASS
mysqladmin –user=root -p$MYSQLPASS reload
#Now on to the Cacti stuff
mkdir -p /var/www/html/cacti
cd /var/www/html/
wget http://www.cacti.net/downloads/cacti-$CACTIVERSION.tar.gz
tar -xzf cacti-$CACTIVERSION.tar.gz
mv cacti-$CACTIVERSION cacti
cd cacti
#Cacti SQL
echo “GRANT ALL ON cacti.* TO cactiuser@localhost IDENTIFIED BY ‘$CACTIPASS’;” > $CACTITMP
echo “flush privileges;” >> $CACTITMP
mysqladmin –user=root create cacti -p$MYSQLPASS
mysql -u root -p$MYSQLPASS cacti < cacti.sql
mysql -u root -p$MYSQLPASS cacti < $CACTITMP
rm -f $CACTITMP
#Set the proper password for the Cacti DB user in the config
sed -i -e “s/^\$database_password\ \= \”cactiuser\”/\$database_password\ \= \”${CACTIPASS}\”/” include/config.php
chown -R apache:apache /var/www/html/cacti
# Crontab entry for cacti (runs as root)
echo ‘*/5 * * * * root /usr/bin/php /var/www/html/cacti/poller.php > /dev/null 2>&1’ > /etc/cron.d/0Cacti
echo “If there were no errors reported, everything should now be installed!\n”
echo “You will now need to reboot the server to apply the SELinux setting.\n”
You can also download the script from here.