Cacti : Install2025/10/03

	Install Cacti that is a free and open-source computer system monitoring, network monitoring, and infrastructure monitoring software.
[1]	Install and start Apache httpd, refer to here.
[2]	Configure SSL/TLS setting, refer to here. (not required but recommended)
[3]	Install PHP, refer to here.
[4]	Install and start MariaDB Server, refer to here.
[5]	Install Cacti, SNMP.

root@dlp:~#

vi /etc/apt/sources.list

# add [non-free] to each line
deb http://deb.debian.org/debian/ trixie main non-free-firmware non-free
deb http://security.debian.org/debian-security trixie-security main non-free-firmware non-free
deb http://deb.debian.org/debian/ trixie-updates main non-free-firmware non-free
deb http://deb.debian.org/debian/ trixie-backports main non-free-firmware non-free

root@dlp:~#

apt update

root@dlp:~#

apt -y install cacti snmp snmpd snmp-mibs-downloader php-mysql php-snmp php-intl rrdtool

# select [apache2] on here
   +-------------------------------+ Configuring cacti +-------------------------------+
   | Please select the web server for which Cacti should be automatically configured.  |
   |                                                                                   |
   | Select "None" if you would like to configure the web server manually.             |
   |                                                                                   |
   | Web server:                                                                       |
   |                                                                                   |
   |                                     apache2                                       |
   |                                     lighttpd                                      |
   |                                     None                                          |
   |                                                                                   |
   |                                                                                   |
   |                                      <Ok>                                         |
   |                                                                                   |
   +-----------------------------------------------------------------------------------+

# select [No] on here
 +---------------------------------------------------+ Configuring cacti +---------------------------------------------------+
 |                                                                                                                           |
 | The cacti package must have a database installed and configured before it can be used. This can be optionally handled     |
 | with dbconfig-common.                                                                                                     |
 |                                                                                                                           |
 | If you are an advanced database administrator and know that you want to perform this configuration manually, or if your   |
 | database has already been installed and configured, you should refuse this option. Details on what needs to be done       |
 | should most likely be provided in /usr/share/doc/cacti.                                                                   |
 |                                                                                                                           |
 | Otherwise, you should probably choose this option.                                                                        |
 |                                                                                                                           |
 | Configure database for cacti with dbconfig-common?                                                                        |
 |                                                                                                                           |
 |                                    <Yes>                                       <No>                                       |
 |                                                                                                                           |
 +---------------------------------------------------------------------------------------------------------------------------+

[6]	Configure SNMP (Simple Network Management Protocol).

root@dlp:~#

vi /etc/snmp/snmp.conf

# line 4 : comment out

mibs :

root@dlp:~#

vi /etc/snmp/snmpd.conf

# line 71,72 : comment out and add a line
# change [Serverworld] to your any community name
#rocommunity  public default -V systemonly
#rocommunity6 public default -V systemonly
rocommunity Serverworld localhost
rocommunity6 Serverworld localhost

root@dlp:~#

systemctl restart snmpd

# validation : replace [Serverworld] to the comunity name you set

root@dlp:~#

snmpwalk -v 2c -c Serverworld localhost system

SNMPv2-MIB::sysDescr.0 = STRING: Linux dlp.srv.world 6.12.43+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.43-1 (2025-08-27) x86_64
SNMPv2-MIB::sysObjectID.0 = OID: NET-SNMP-MIB::netSnmpAgentOIDs.10
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (833) 0:00:08.33
SNMPv2-MIB::sysContact.0 = STRING: Me <me@example.org>
SNMPv2-MIB::sysName.0 = STRING: dlp.srv.world
SNMPv2-MIB::sysLocation.0 = STRING: Sitting on the Dock of the Bay
SNMPv2-MIB::sysServices.0 = INTEGER: 72
SNMPv2-MIB::sysORLastChange.0 = Timeticks: (0) 0:00:00.00
SNMPv2-MIB::sysORID.1 = OID: SNMP-FRAMEWORK-MIB::snmpFrameworkMIBCompliance
SNMPv2-MIB::sysORID.2 = OID: SNMP-MPD-MIB::snmpMPDCompliance
SNMPv2-MIB::sysORID.3 = OID: SNMP-USER-BASED-SM-MIB::usmMIBCompliance
SNMPv2-MIB::sysORID.4 = OID: SNMPv2-MIB::snmpMIB
SNMPv2-MIB::sysORID.5 = OID: SNMP-VIEW-BASED-ACM-MIB::vacmBasicGroup
SNMPv2-MIB::sysORID.6 = OID: TCP-MIB::tcpMIB
SNMPv2-MIB::sysORID.7 = OID: UDP-MIB::udpMIB
SNMPv2-MIB::sysORID.8 = OID: IP-MIB::ip
SNMPv2-MIB::sysORID.9 = OID: SNMP-NOTIFICATION-MIB::snmpNotifyFullCompliance
SNMPv2-MIB::sysORID.10 = OID: NOTIFICATION-LOG-MIB::notificationLogMIB
.....
.....

[7]	Create a Database for Cacti and import tables.

root@dlp:~#

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

[mariadbd]
# add follows under the [mariadbd] section for Cacti requirements
default-time-zone=SYSTEM
character-set-server=utf8mb4
character_set_client=utf8mb4
collation-server=utf8mb4_unicode_ci
max_heap_table_size=128M
tmp_table_size=128M
innodb_doublewrite=OFF
innodb_buffer_pool_size=2048M
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

root@dlp:~#

systemctl restart mariadb

root@dlp:~#

mysql

Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 49
Server version: 11.8.3-MariaDB-0+deb13u1 from Debian -- Please help get to 10k stars at https://github.com/MariaDB/Server

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

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

# create a [Cacti] database ( set any password for [password] section )
MariaDB [(none)]> create database cacti; 
Query OK, 1 row affected (0.00 sec)

MariaDB [(none)]> grant all privileges on cacti.* to cacti@'localhost' identified by 'password'; 
Query OK, 0 rows affected (0.00 sec)

# as a requirement for Cacti, grant the [select] permission to the [time_zone_name] parameter
MariaDB [(none)]> grant select on mysql.time_zone_name to cacti@'localhost'; 
Query OK, 0 rows affected (0.005 sec)

MariaDB [(none)]> exit 
Bye

root@dlp:~# mariadb-tzinfo-to-sql /usr/share/zoneinfo | mysql -u root mysql 
root@dlp:~# mysql -u cacti -p cacti < /usr/share/doc/cacti/cacti.sql 
Enter password:      # cacti user's password

[8]	Configure Cacti.

root@dlp:~#

vi /etc/php/8.4/fpm/pool.d/www.conf

;; add to last line for Cacti requirements
php_value[max_execution_time] = 60
php_value[memory_limit] = 512M
php_value[date.timezone] = Asia/Tokyo

root@dlp:~#

vi /usr/share/cacti/site/include/config.php

# line 45 : change Cacti DB connection info
$database_type     = "mysqli";
$database_default  = "cacti";
$database_hostname = "localhost";
$database_username = "cacti";
$database_password = "password";
$database_port     = "3306";
$database_retries  = 5;
$database_ssl      = false;

root@dlp:~#

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

        # line 6 : change access permission if you need
        #Require all granted
        Require ip 127.0.0.1 10.0.0.0/24

root@dlp:~#

chown -R www-data:www-data /usr/share/cacti/resource

root@dlp:~#

chown -R www-data:www-data /usr/share/cacti/site/scripts

root@dlp:~#

systemctl reload apache2 php8.4-fpm

root@dlp:~#

chown www-data:www-data /var/log/cacti/{poller-error,rrd}.log

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