Cacti Installation on Centos-6.5

Source :

 > http://www.unixmen.com/install-cacti-network-monitoring-tool-on-centos-6-4-rhel-6-4-scientific-linux-6-4/

Cacti Installation
Nagios with Cacti through the NPC plugin on CentOS 6.3

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[root@test html]# pwd
/var/www/html
[root@test html]# ll
total 4
lrwxrwxrwx  1 root root    12 Jan 10 12:56 cacti -> cacti-0.8.8b
drwxr-xr-x 13 1000 users 4096 Aug  7  2013 cacti-0.8.8b
[root@test html]#

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[root@server ~]# yum install httpd httpd-devel -y

yum install mysql mysql-server -y
yum install php-mysql php-pear php-common php-gd php-devel php php-mbstring php-cli php-mysql -y
yum install php-snmp -y
yum install net-snmp-utils net-snmp-libs php-pear-Net-SMTP -y
yum install rrdtool -y
[root@server ~]# /etc/init.d/httpd start
[root@server ~]# /etc/init.d/mysqld start
[root@server ~]# /etc/init.d/snmpd start
[root@server ~]# chkconfig httpd on
[root@server ~]# chkconfig mysqld on
[root@server ~]# chkconfig snmpd on
cd /var/www/html
wget http://www.cacti.net/downloads/cacti-0.8.8b.tar.gz
tar -xzvf cacti-0.8.8b.tar.gz
ln -s cacti-0.8.8b cacti
adduser cacti
echo "*/5 * * * * cacti php /var/www/html/cacti/poller.php &>/dev/null" >> /etc/cron.d/cacti
cd /var/www/html/cacti
chown -R cacti.apache rra log  

chmod 775 rra log
Permission Output : [root@test cacti]# ls -lrt
total 1088
-rw-r--r-- 1 cacti apache    353 Apr  4  2012 script_server.pl
drwxr-xr-x 5 cacti apache   4096 Apr  4  2012 resource
-rw-r--r-- 1 cacti apache     48 Apr  4  2012 README
drwxrwxr-x 2 cacti apache   4096 Apr  4  2012 log
-rw-r--r-- 1 cacti apache  15141 Apr  4  2012 LICENSE
 Database : [root@server ~]# mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 7
Server version: 5.1.69 Source distribution

Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> create database cacti;
Query OK, 1 row affected (0.01 sec)

mysql> GRANT ALL ON cacti.* TO cacti@localhost IDENTIFIED BY 'centos';
Query OK, 0 rows affected (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)

mysql> exit
Bye
cd /var/www/html/cacti/include/
vi config.php

$database_type = "mysql";
$database_default = "cacti";
$database_hostname = "localhost";
$database_username = "cactiuser";
$database_password = "MyV3ryStr0ngPassword";
$database_port = "3306";
$database_ssl = false;
$url_path = "/cacti/";

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Troublesoot on RHEL/CentOS 7.x
==================================

source : http://www.tecmint.com/install-cacti-network-monitoring-on-rhel-centos-6-3-5-8-and-fedora-17-12/

1) Validation error when adding cacti host to the graphs tree


Open host.php in line 179
vi /usr/share/cacti/host.php +179
Replace the line 179:
input_validate_input_number(get_request_var_post('drp_action'));
with
input_validate_input_regex(get_request_var_post('drp_action'), "^([a-zA-Z0-9_]+)$");
Restart Apache service:
service httpd restart
Open your Cacti, re-add your host to the desired graphs tree and voila! It should work now:)

2) graphs not showing up in cacti :

- wrong permissions 
The permissions for the rra and log folder is set to 755, cactiuser is owner. 

- crontab entry missing or wrong 
*/5 * * * * cactiuser php /usr/share/cacti/poller.php > /dev/null 2>&1 

- lack of disk storage 
No.