Cacti

Install

Prerequisites

• sudo apt update

Install

#Apache & MariaDB

• sudo apt install -y apache2 mariadb-server mariadb-client php-mysql libapache2-mod-php

#PHP Extensions

• sudo apt install -y php-xml php-ldap php-mbstring php-gd php-gmp

#snmp

• sudo apt install -y snmp php-snmp rrdtool librrds-perl

Configuration

Database Tuning

• vi /etc/mysql/mariadb.conf.d/50-server.cnf

[mysqld]
collation-server = utf8mb4_unicode_ci
max_heap_table_size = 128M
tmp_table_size = 64M
join_buffer_size = 124M
innodb_file_format = Barracuda
innodb_large_prefix = 1
innodb_buffer_pool_size = 1024M
innodb_buffer_pool_instances = 10
innodb_flush_log_at_timeout = 3
innodb_read_io_threads = 32
innodb_write_io_threads = 16
innodb_io_capacity = 5000
innodb_io_capacity_max = 10000

Restart mariadb

• systemctl restart mariadb

Set Timezone

• vi /etc/php/7.2/apache2/php.ini

AND

• vi /etc/php/7.2/cli/php.ini

date.timezone = Europe/Berlin
memory_limit = 512M
max_execution_time = 60

Restart MariaDB

• sudo systemctl restart mariadb

Create Database

• sudo mysql -u root -p
  • create database cacti;
  • GRANT ALL ON cacti.* TO cactiuser@localhost IDENTIFIED BY 'cactipassword';
  • flush privileges;
  • exit

Importmysql_test_data_tiemzone

• sudo mysql -u root -p mysql < /usr/share/mysql/mysql_test_data_timezone.sql

Grant the permission to cactiuser

• sudo mysql -u root -p
  • GRANT SELECT ON mysql.time_zone_name TO cactiuser@localhost;
  • flush privileges;
  • exit

Install cacti

• wget https://www.cacti.net/downloads/cacti-latest.tar.gz
• tar -zxvf cacti-latest.tar.gz
• sudo mv cacti-1* /opt/cacti

Import the default Cacti database

• sudo mysql -u root -p cacti < /opt/cacti/cacti.sql

Cacti Config

• vi /opt/cacti/include/config.php

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

Edit the crontab file

• vi /etc/cron.d/cacti

*/5 * * * * www-data php /opt/cacti/poller.php > /dev/null 2>&1

Apache Config

• vi /etc/apache2/sites-available/cacti.conf

Alias /cacti /opt/cacti

  <Directory /opt/cacti>
      Options +FollowSymLinks
      AllowOverride None
      <IfVersion >= 2.3>
      Require all granted
      </IfVersion>
      <IfVersion < 2.3>
      Order Allow,Deny
      Allow from all
      </IfVersion>

   AddType application/x-httpd-php .php

<IfModule mod_php.c>
      php_flag magic_quotes_gpc Off
      php_flag short_open_tag On
      php_flag register_globals Off
      php_flag register_argc_argv On
      php_flag track_vars On
      # this setting is necessary for some locales
      php_value mbstring.func_overload 0
      php_value include_path .
 </IfModule>

  DirectoryIndex index.php
</Directory>

Enable and restart Apache2

• a2ensite cacti
• systemctl restart apache2

Create a log file and set Rights

• sudo touch /opt/cacti/log/cacti.log
• sudo chown -R www-data:www-data /opt/cacti/

Login

• http://ip/cacti
• user: admin
• pass: admin

Links

• https://www.itzgeek.com/how-tos/linux/how-to-monitor-remote-linux-servers-with-cacti.html