Install and Configure Cacti on Ubuntu 22.04

In this guide, we want to show you to Install and Configure Cacti Monitoring Tool on Ubuntu 22.04.

Cacti is an open-source, network monitoring and graphing tool written in PHP/MySQL. It uses the RRDTool (Round-robin database tool) engine to store data and generate graphics. It collects periodical data through Net-SNMP (an application suite to implement SNMP—Simple Network Management Protocol).

Steps To Install and Configure Cacti on Ubuntu 22.04

To complete this guide, you need some requirements first.

Requirements

You must log in to your server as a non-root user with sudo privileges. To do this, you can follow our guide the Initial Server Setup with Ubuntu 22.04.

Also, it would be best to have the LAMP Stack installed on your server. You can check our guide on How To Install the LAMP stack on Ubuntu 22.04. You need to check the installation parts, not the whole article.

PHP Configuration For Cacti

Here you need to install some PHP extensions and dependencies on Ubuntu 22.04 with the commands below:

sudo apt install php-{mysql,curl,net-socket,gd,intl,pear,imap,memcache,pspell,tidy,xmlrpc,snmp,mbstring,gmp,json,xml,common,ldap}

sudo apt install libapache2-mod-php

At this point, you need to configure PHP memory and execution time. To do this, open the php.ini file with your favorite text editor, here we use vi:

sudo vi /etc/php/*/apache2/php.ini

Find the lines below and change the values as shown below:

memory_limit = 512M
max_execution_time = 300

Also, find the line below and uncomment it by removing the “;” from the beginning of the line and setting it to your time zone.

date.timezone = your-timezone 

When you are done, save and close the file.

Then, open the PHP CLI php.ini file and set the time zone there as well:

sudo vi /etc/php/*/cli/php.ini

date.timezone = your-timezone

When you are done, save and close the file.

Create Cacti Database and User on Ubuntu 22.04

At this point, you need to create a database and user for Cacti. Log in to your MariaDB shell with the command below:

sudo mysql -u root -p

From your MariaDB shell, run the command below to create the Cacti database, here we named it cactidb:

MariaDB [(none)]> CREATE DATABASE cactidb DEFAULT CHARACTER SET utf8 COLLATE utf8_unicode_ci ;

Then, create the cacti user and grant all the privileges to the database user with the command below:

MariaDB [(none)]> GRANT ALL PRIVILEGES ON cactidb.* TO 'cactiuser'@'localhost' IDENTIFIED BY 'strongpassword';

Flush the privileges and exit from MariaDB with the commands below:

MariaDB [(none)]> FLUSH PRIVILEGES; 
MariaDB [(none)]> EXIT;

Populate MySQL’s TimeZone Information

Next, you need to populate MySQL’s TimeZone information with the following command:

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

At this point, you need to grant database user access to the MySQL TimeZone database and select permission. To do this, log in to your MariaDB shell and run the following commands:

sudo mysql -u root -p

MariaDB [(none)]> GRANT SELECT ON mysql.time_zone_name TO cactiuser@localhost;
MariaDB [(none)]> ALTER DATABASE cactidb CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
MariaDB [(none)]> FLUSH PRIVILEGES;
MariaDB [(none)]> EXIT;

Configure MariaDB for Cacti

Now open the MariaDB file and add the lines below under the [mariadb] section for an optimized database:

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

innodb_file_format=Barracuda
innodb_large_prefix=1
collation-server=utf8mb4_unicode_ci
character-set-server=utf8mb4
innodb_doublewrite=OFF
max_heap_table_size=128M
tmp_table_size=128M
join_buffer_size=6M

sort_buffer_size=4M
innodb_buffer_pool_size=1G
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
innodb_buffer_pool_instances=9

Also, add a # tag in front of these two lines available in the same file to make them unreadable:

#character-set-server = utf8mb4
#collation-server = utf8mb4_general_ci

When you are done, save and close the file.

Install SNMP and RRDTool on Uubntu 22.04

To work with Cacti on Ubuntu 22, you need to install the SNMP and RRDTool. To do this, run the following command:

sudo apt install snmp snmpd rrdtool

Now you can follow the steps below to install the latest release of Cacti.

Set up Cacti Network Monitoring on Ubuntu 22.04

At this point, you can clone the latest version of Cacti from Github.

First, install git on your server with the command below:

sudo apt install git

Clone Cacti from GitHub

Then, clone Cacti from Github:

git clone -b 1.2.x https://github.com/Cacti/cacti.git

Output
Cloning into 'cacti'...
remote: Enumerating objects: 89842, done.
remote: Counting objects: 100% (3008/3008), done.
remote: Compressing objects: 100% (831/831), done.
remote: Total 89842 (delta 2222), reused 2943 (delta 2163), pack-reused 86834
Receiving objects: 100% (89842/89842), 178.47 MiB | 18.99 MiB/s, done.
Resolving deltas: 100% (67793/67793), done.

Move Cacti Files To Web Directory

Next, you need to move the cacti files to your Web directory on Ubuntu 22.04:

sudo mv cacti /var/www/html

Populate Cacti SQL Configuration

Use the Cacti SQL configuration file to pre-populate the database created for it:

sudo mysql -u root cactidb < /var/www/html/cacti/cacti.sql

Edit config.php File

Here you need to create a PHP configuration file for Cacti. The Configuration file is already present inside the copied Cacti folder, we rename it with the commands below:

cd /var/www/html/cacti/include

cp config.php.dist config.php

Now, edit the config.php and add the Database details you have created for Cacti.

sudo vi config.php

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

When you are done, save and close the file.

Next, give Apache user permission to access the Cacti folder in the Web root directory:

sudo chown -R www-data:www-data /var/www/html/cacti

Create Cacti Systemd Unit File

To run the Cacti poller service in the background, you need to create a Cacti system service with the following command:

sudo vi /etc/systemd/system/cactid.service

Add the following content to the file:

[Unit]
Description=Cacti Daemon Main Poller Service
After=network.target
[Service]
Type=forking
User=www-data
Group=www-data
EnvironmentFile=/etc/default/cactid
ExecStart=/var/www/html/cacti/cactid.php
Restart=always
RestartSec=5s
[Install]
WantedBy=multi-user.target

When you are done, save and close the file.

Then, create an environment file with the command below:

sudo touch /etc/default/cactid

Reload the system services:

sudo systemctl daemon-reload

Start and enable the Cacti service on Ubuntu 22.04 with the given commands:

# sudo systemctl enable cactid
# sudo systemctl restart cactid

Verify that your service is active and running on your server:

sudo systemctl status cactid

Output
● cactid.service - Cacti Daemon Main Poller Service
     Loaded: loaded (/etc/systemd/system/cactid.service; enabled; vendor preset>
     Active: active (running) since Tue 2023-01-31 11:28:56 UTC; 7s ago
    Process: 18925 ExecStart=/var/www/html/cacti/cactid.php (code=exited, statu>
   Main PID: 18929 (php)
      Tasks: 1 (limit: 4575)
     Memory: 14.8M
        CPU: 211ms
     CGroup: /system.slice/cactid.service
             └─18929 php /var/www/html/cacti/cactid.php
...

Also, restart your Apache and MariaDB to apply the changes:

sudo systemctl restart apache2 mariadb

Cacti Web Interface Installation

At this point, you can continue your Cacti installation from the web interface by typing your server’s IP address in your web browser followed by cacti:

http://your-server-IP-address/cacti/

You will see the Cacti login screen. Enter the default username and password as admin and click Login.

Then, you need to change the current default password for Cacti and click save.

Next, you will see the license agreement screen. Select your desired theme, and language, Accept GPL License Agreement, and click begin.

In the Next step, the installation wizard will check that all the required things for Cacti work are in place on Ubuntu 22.04. If any of the requirements are not met the same will reflect on your screen. If we have to fulfill the same then only we will be able to move forward.

On the next screen, you will see that by default let the “New Primary Server” be selected because it is an initial server that is going to monitor other devices. Also, check your local database connection information, if everything is correct click Next to continue.

In the next step, the system will ensure all the necessary permissions required by Cacti to access files are set on Ubuntu 22.04. Click next.

Then, you will see the Critical Binary Locations and Versions screen. Make sure all of these values are correct and click Next.

Next, check the box next to the I have read this statement to acknowledge that you have read and understand this security concern and click Next.

After that, choose the default profile for poller and network details and click Next.

On the Template Setup, Please select the Device Templates that you wish to use after the Install and click Next.

Read the details about your Server, database, and table setup and click Next.

Confirm installation by checking the radio button then click “Install” to begin the installation process.

At this point, you will see the process Log, and click Get started.

Now you will see your Cacti dashboard on Ubuntu 22.04:

It is now time to add your devices and configure Cacti to start monitoring them. There is much more to do after you have your server running.

For more information, you can visit the Cacti Documentation page.

Conclusion

At this point, you have learned to Install and Configure the Cacti Monitoring Tool on Ubuntu 22.04.

Hope you enjoy it. Also, you may be like these guides on the Orcacore website:

Install Samba Share on Ubuntu 22.04

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