Zabbix Installation and configuration

Setup Apache, PHP & MySQL / MariaDB

Install and Configure Apache httpd Server

Install Apache Web Server for CentOS 7 server by running the command

#cat /etc/selinux/config

SELINUX=disabled

#yum install httpd -y

Install and Update apache from the following configuration file path /etc/httpd/conf/ httpd.conf, then restart the apache service as follows

# vim /etc/httpd/conf/httpd.conf

86 ServerAdmin [email protected] 

96 ServerName zabbix.zippyops.com 

#systemctl restart httpd

Install and Configure PHP

Install PHP on CentOS 7 server and extensions required by Zabbix as follows

#yum install epel-release -y

#yum install php php-pear php-cgi php-common php-mbstring php-snmp php-gd php-xml php-mysql php-gettext php-bcmath

#php --version

PHP 5.4.16 (cli) (built: Apr 1 2020 04:07:17)

Install and Configure Database Server

MySQL 8.0 Repository SetUp

To start installing MySQL Server on CentOS 7, first add the official MySQL community repository to the system and run the below commands:

#yum install https://dev.mysql.com/get/mysql80-community-release-el7-1.noarch.rpm

Now the repo is added, install the MySQL 8 without editing repository content since repo for 8.0 is enabled by default.

#yum --enablerepo=mysql80-community install mysql-community-server

Now start the MySQL service using the following command:

#systemctl enable mysqld.service

#systemctl start mysqld.service

MySQL Root Password Setup

Installation of MySQL on CentOS 7 will generate a temporary password:

# grep 'temporary password' /var/log/mysqld.log

2021-06-02T10:34:01.843855Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: ose<>IHIj2w=

# mysql_secure_installation

Securing the MySQL server deployment.

Enter password for user root: (SyWht_th5k4

The existing password for the user account root has expired. Please set a new password.

New password: Zabbix@123 <-- Set the new password for MySQL -->

Re-enter new password: Zabbix@123

The 'validate_password' component is installed on the server.

The subsequent steps will run with the existing configuration of the component.

Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y

- Dropping test database...

Success.

- Removing privileges on test database...

Success.

Reloading the privilege tables will ensure that all changes made so far will take effect immediately.

Reload privilege tables now? (Press y|Y for Yes, any other key for No) : y

Success.

All done!

Test the MySQL Setup

After Installing and completing the configuration, connect to MySql server using the following command.

# mysql -u root -p

Enter Password: Zabbix@123

mysql> CREATE DATABASE zabbixdb character set utf8 collate utf8_bin;

Query OK, 1 row affected (0.00 sec)

mysql> use zabbixdb

Database changed

mysql> CREATE USER 'zabbixadmin'@'%' IDENTIFIED WITH mysql_native_password BY 'User@123';

Query OK, 0 rows affected (0.07 sec)

mysql> GRANT ALL PRIVILEGES ON *.* TO 'zabbixadmin'@'%' WITH GRANT OPTION;

Query OK, 0 rows affected (0.07 sec)

mysql> FLUSH PRIVILEGES;

mysql> show databases;

mysql> quit;

# mysql -V

Mysql Ver 8.0.13 for Linux on x86_64 (MySQL Community Server - GPL)

#service mysqld restart

Setup zabbix 4.0 server

Now start the installation by deploying Zabbix 4.0 server by adding the Zabbix repository. To install Zabbix server, Zabbix proxy & Zabbix frontend with MySQL support using the following command:

#rpm -ivh https://repo.zabbix.com/zabbix/4.0/rhel/7/x86_64/zabbix-release-4.0-1.el7.noarch.rpm

#yum install zabbix-server-mysql zabbix-proxy-mysql zabbix-web-mysql

Setup Zabbix Apache Configuration

Zabbix creates its own apache configuration file /etc/httpd/conf.d/zabbix.conf.

Some PHP settings are already configured, but it’s necessary to uncomment the “date.timezone” setting and set the right timezone for you

#cat /etc/httpd/conf.d/Zabbix.conf

php_value date.timezone Asia/Kolkata

Import Zabbix Server DataBase Schema

Import initial schema & data for the server with MySQL by using the following commands:

#zcat /usr/share/doc/zabbix-server-mysql*/create.sql.gz | mysql -u zabbixadmin <--- DB Username ---> -p zabbixdb <---(DB Name) -->

Enter password: User@123

Edit Zabbix Server Config File

Edit the Zabbix server configuration file /etc/zabbix/zabbix_server.conf and set database connection settings and start the Zabbix-server service.

#vim /etc/zabbix/zabbix_server.conf

DBHost=localhost

DBName=zabbixdb

DBUser=zabbixadmin

DBPassword=User@123

AlertScriptsPath=/usr/lib/Zabbix/alertscripts <--Alert Msg sent to any media using script-->

#systemctl start zabbix-server

#systemctl enable zabbix-server

Open the Required Port using Firewall

Diisable the SELinux and restart the server, then open the required port by using the following command:

#firewall-cmd --zone=public --add-port={10050/tcp,10051/tcp} --permanent

#firewall-cmd --zone=public --add-port=80/tcp --permanent

#firewall-cmd --reload

Perform Zabbix Initial Setup with Welcome Screen

After completing the setup, let’s start the Zabbix server using the following command.

After starting the Zabbix service, let’s go to the Zabbix web installer and finish the installation.

#http://zabbix.zippyops.com/zabbix/

This is the welcome screen of the Zabbix web installer. Go forward by click on the next button.

Check if the system has all required packages, if everything is ok click next.

Configure Database Settings

Fill the Zabbix server Name on the required field as shown below:

Now, it will show the summary of the Pre-installation steps, then click next.

If everything goes correctly, see a successful installation message is showing on this page. This will also show a message for created configuration file.

After successful login, the Zabbix dashboard will appear as shown below.

Zabbix server setup has been completed.

Relevant Blogs:

Zabbix Triggers

Zabbix Configure Alerts

Architecture of Kubernetes

Terraform AWS Three Tier Application

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