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Installing Zabbix on Ubuntu 20.04

TAGS:
  • Zabbix
  • Ubuntu 20.04

Introduction

What is Zabbix?

Zabbix is an enterprice-class open source monitoring solution. Which can be used for monitoring of numerous parameters of a network and the health and integrity of servers, virtual machines, applications, services, databases, websites, the cloud and more. It is also possible to configure e-mail based alerts for virtually any event. This allows for a fast reaction to server problems. Zabbix offers excellent reporting and data visualisation features based on the stored data. This makes Zabbix ideal for capacity planning

Installing Zabbix

Step 1

Pre-requisites

After you logged in to your server you need to update to the latest available packages.

apt-get update -y

Step 2

Installing LAMP Server

Firstly we need to install Apache, MariaDB, PHP and some other extensions that are required.

apt-get install apache2 libapache2-mod-php mariadb-server php php-mbstring php-gd php-xml php-bcmath php-ldap php-mysql unzip curl gnupg2 -y

Once all the packages are installed, we need to edit the php.ini file and make some changes.

nano /etc/php/7.4/apache2/php.ini

Change the following settings to your likings. Or you can use the same as for the example.

memory_limit 256M
upload_max_filesize 16M
post_max_size 16M
max_execution_time 300
max_input_time 300
max_input_vars 10000
date.timezone = REGION/STATE

Save the file and restart the Apache service.

systemctl restart apache2

The changes will now be applied.

Step 3

Creating a Database for Zabbix

Now we need to create a database and user for Zabbix. First we need to login to the MariaDB shell.

mysql

Now we are going to create a database and user for Zabbix. Make sure to change the password with your own password that you will be using.

CREATE DATABASE zabbixdb character set utf8 collate utf8_bin;
CREATE USER 'zabbixuser'@'localhost' IDENTIFIED BY 'password';

Now we need to grant all privileges to the Zabbix database.

GRANT ALL PRIVILEGES ON zabbixdb.* TO 'zabbixuser'@'localhost' WITH GRANT OPTION;

Now flush the privileges and exit MariaDB.

FLUSH PRIVILEGES;
EXIT;

Step 4

Zabbix is not installed in the Ubuntu 20.04 standard repository by default so we need to install the repository first.

wget https://repo.zabbix.com/zabbix/5.0/ubuntu/pool/main/z/zabbix-release/zabbix-release_5.0-1+focal_all.deb
dpkg -i zabbix-release_5.0-1+focal_all.deb

No we need to update the repository and install the Zabbix server.

apt-get update -y
apt-get install zabbix-server-mysql zabbix-agent zabbix-frontend-php zabbix-apache-conf -y

After all the packages are installed we need to start the Zabbix service. We will also enable the service to start after a reboot.

systemctl start zabbix-server
systemctl enable zabbix-server

Now we need to import the Zabbix database schema. You will need to enter the password created earlier.

cd /usr/share/doc/zabbix-server-mysql
zcat create.sql.gz | mysql -u zabbixuser -p zabbixdb

It can take several minutes before the zcat command finishes.

Now we need to edit the default Zabbix configuration file.

nano /etc/zabbix/zabbix_server.conf

Change the following lines. Make sure to enter the password you created earlier. You will need to uncomment (#) DBHost and DBPassword.

DBHost=localhost
DBName=zabbixdb
DBUser=zabbixuser
DBPassword=password

Save and close the file. Now we need to restart the Apache and Zabbix services.

systemctl restart zabbix-server
systemctl restart apache2

Step 5

Configuring the Zabbix Agent.

We need to configure the zabbix-agent in our system. You can configure this by editing the zabbix_agentd.conf file.

nano /etc/zabbix/zabbix_agentd.conf

Change the following lines.

Server = 127.0.0.1
ServerActive = 127.0.0.1
Hostname = Zabbix Server

Save and close the file and then start the Zabbix agent service and enable it so that it will start after a reboot.

systemctl start zabbix-agent
systemctl enable zabbix-agent

Step 6

Enter the Zabbix dashboard via http://YOUR-SERVER-IP/zabbix You will be redirected to the Zabbix welcome page.

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Click on Next Check if all the pre-requisites are installed.

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If every pre-requisites is installed you can click Next. Next we need to enter the database credentials we have created earlier.

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Next you need to provide your Zabbix server details. In the example we use Demo as the name.

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Next you need to confirm the configuration.

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A screen saying Congratulations! will follow. Click Finish

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You will be redirected to the Zabbix login page. The Zabbix default username and password are the following:

Username = Admin Password = zabbix

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You have now successfully installed Zabbix.

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