How To Install Zabbix Server on CentOS 8

Install zabbix server on centOS 8; Through this tutorial, we will learn how to install and configure zabbix server on CentOS 8.

How To Install Zabbix Server on CentOS 8

Just follow the following steps to install and configure zabbix server on centOS 8:

Step 1 – Disable SELinux
Step 2 – Install LAMP Server
Step 3 – Configure MariaDB Database
Step 4 – Install Zabbix Server
Step 5 – Configure Zabbix
Step 6 – Configure Firewall for Zabbix
Step 7 – Access Zabbix Web Interface

Step 1 – Disable SELinux

First of all, open terminal and execute the following command on terminal to disable SELinux by editing /etc/selinux/config:

nano /etc/selinux/config

Update the following line:

SELINUX=disabled

Save and close the file.

Step 2 – Install LAMP Server

Now, execute the following command on terminal install the Apache webserver, MariaDB database server, PHP and other required PHP extension to system:

dnf install -y httpd mariadb-server php php-cli php-common php-mbstring php-mysqlnd php-xml php-bcmath php-devel php-pear php-gd

Once the above commands are executed, then open php.ini file by execute the following command:

nano /etc/php.ini

Update the following values as per requirements:

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 = Asia/Kolkata

Save and close file.

Step 3 – Configure MariaDB Database

Execute the following command on terminal to secure the MariaDB:

mysql_secure_installation

This script will set the MariaDB root password, remove anonymous users, disallow root login remotely and remove test database as shown below:

Enter current password for root (enter for none): Press Enter
Set root password? [Y/n] Y
New password: 
Re-enter new password: 
Remove anonymous users? [Y/n] Y
Disallow root login remotely? [Y/n] Y
Remove test database and access to it? [Y/n] Y
Reload privilege tables now? [Y/n] Y

Once the MariaDB is secured, log in to MariaDB shell with the following command:

mysql -u root -p

After that, create a database and user for Zabbix with the following command:

MariaDB [(none)]> CREATE DATABASE zabbix CHARACTER SET utf8 collate utf8_bin;
MariaDB [(none)]> GRANT ALL PRIVILEGES ON zabbix.* TO zabbix@localhost IDENTIFIED BY 'zabbixpassword'

Then, flush the privileges and exit from the MariaDB shell with the following command:

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

Step 4 – Install Zabbix Server

Before install zabbix server, we neeed to install the libssh2 library required by Zabbix using the following command:

dnf install -y http://mirror.centos.org/centos/8.0.1905/AppStream/x86_64/os/Packages/libssh2-1.8.0-8.module_el8.0.0+189+f9babebb.1.x86_64.rpm

Then execute the following command on terminal to instal zabbix server on centOS 8:

dnf install -y https://repo.zabbix.com/zabbix/4.4/rhel/8/x86_64/zabbix-release-4.4-1.el8.noarch.rpm
dnf install -y zabbix-server-mysql zabbix-web-mysql zabbix-agent zabbix-apache-conf

Now, start and enable the Zabbix server by executing the following command on terminal:

systemctl start zabbix-server
systemctl start zabbix-agent
systemctl start php-fpm
systemctl enable zabbix-server
systemctl enable zabbix-agent
systemctl enable php-fpm

Step 5 – Configure Zabbix

Configure zabbix server by import the database schema to the Zabbix database using the following command on terminal:

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

Then, edit the zabbix_server.conf file and define Zabbix database credentials by executing the following command on terminal:

nano /etc/zabbix/zabbix_server.conf

Change the following lines:

DBHost=localhost
DBName=zabbix
DBUser=zabbix
DBPassword=zabbixpassword

Save and close the file.

Now, configure PHP for Zabbix frontend by editing the following file:

nano /etc/php-fpm.d/zabbix.conf

Update the timezone value with your desired value as shown below:

php_value[date.timezone] = Asia/Kolkata

Save and close the file. And execute the following command on terminal to restart all the services to apply the changes:

systemctl restart zabbix-server
systemctl restart zabbix-agent
systemctl restart php-fpm
systemctl restart httpd
systemctl restart mariadb

Step 6 – Configure Firewall for Zabbix

Now, execute the following command on terminal to configure ports 10050 and 10051:

firewall-cmd --permanent --add-service=http
firewall-cmd --permanent --add-port=10050/tcp
firewall-cmd --permanent --add-port=10051/tcp

Then execute the following command on terminal to reload firewall services:

firewall-cmd --reload

Step 7 – Access Zabbix Web Interface

Finally, open web browser and type the URL http://your-server-ip/zabbix for access web interface of zabbix.

Conclusion

That’s all! we have successfully installed the Zabbix server on CentOS 8 server.

How To Install Zabbix Server on CentOS 8