Cacti
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Getting Started
Before installing cacti check for net-snmp package.
Cacti/SNMP host setup
You will probably need the following USE flags set:
USE = mysql xml sockets vhosts
For php to work correctly
You will probably need the following USE flags set:
USE = apache2 snmp vhosts
For cacti.
To install Cacti run the following command:
emerge cacti
This will install cacti onto your system.
If you already installed php, but without xml flag set, you should re-emerge php with USE="xml" first of all! The same applies for the sockets flag.
NOTE: You have to run the command
webapp-config -I -h localhost -d cacti cacti <version #>
after you run the emerge.
Config
After installation you will need to edit the config file and insert the proper data to fit your installation Modèle:Box File
Install the database
First you need to create a database named 'cacti' with a user named cactiuser
mysql -u root -p
mysql> create database cacti;
mysql> grant all on cacti.* to cactiuser@localhost;
mysql> set password for cactiuser@localhost=password('cactipass');
mysql> exit
If this is a fresh installation of mysql you might get a message like "Can't connect to local MySQL server through Can't connect to local MySQL server through
socket /var/run/mysqld/mysqld.sock (2)" . Just run mysql_install_db
While in the cacti folder run this command to insert the default database
mysql -u cactiuser -p cacti < cacti.sql
Finish the configuration by accessing the cacti web page
http://url/to/cacti/
Configure the required file paths. If you're going to login for the first time, the password-username pair is admin-admin by default.
Set the permissions on the cacti directories to be able to generate the graph/log. Execute this command in the cacti folder.
chown -R apache:apache rra/ log/
Crontab
as your cacti user add the following to the cron file
*/5 * * * * apache php <cacti path>/cacti/poller.php > /dev/null 2>&1
notice, under vixie cron you do not specify user account that the cronjob is ran, so you must use
*/5 * * * * php <cacti path>/cacti/poller.php > /dev/null 2>&1
Troubleshooting
If no graphs are generated and you receieve the following message in your cron logs, this indicates that an entry can not be found for the apache user in /etc/shadow.
su: Authentication service cannot retrieve authentication info.
This can be fixed by adding it with the following command:
pwconv
More
Déplacer CACTI dans le serveur
Il faut en plus de copier les fichier refaire l'index des fichiers rra =>
php rebuild_poller_cache.php
Et ca JAZZ ensuite
Ajouter un user sur le serveur distant
net-snmp-config --create-snmpv3-user -a "my_password" my_user
Ouvrir le port 161 pour snmp
iptables -A INPUT -p udp --dport 161 -i eth0 -j ACCEPT
