How to install zabbix on centos 7

1. Add a new repo:

   rpm -ivh http://repo.zabbix.com/zabbix/2.4/rhel/7/x86_64/zabbix-release-2.4-1.el7.noarch.rpm

2. Install zabbix server:

   yum install zabbix-server-mysql zabbix-web-mysql mariadb mariadb-server

3. Install zabbix agent:

   yum install zabbix-agent

4. Enable MySQL innodb_file_per_table feature:

   # cat /etc/my.cnf
   ...
   [mysqld]
   innodb_file_per_table=1
   ...

5. configure DB server:

   systemctl start mariadb
   mysql_secure_installation
   mysql -1u root -p

6. create zabbix DB and give priveledges to user zabbix:

   mysql> create database zabbix character set utf8;
   mysql> grant all privileges on zabbix.* to 'zabbix'@'localhost' identified by 'password';
   mysql> flush privileges;

7. create initial database:

   cd /usr/share/doc/zabbix-server-mysql-2.4.5/create
   mysql -uroot -p zabbix < schema.sql
   mysql -uroot -p zabbix < images.sql
   mysql -uroot -p zabbix < data.sql

8. Edit zabbix settings:

   # cat /etc/zabbix/zabbix_server.conf
   DBHost=localhost
   DBName=zabbix
   DBUser=zabbix
   DBPassword=password

9. Start zabbix server:

   systemctl start mariadb
   systemctl start zabbix-server

10. Edit zabbix frontend settings:

    # cat /etc/httpd/conf.d/zabbix.conf
    php_value max_execution_time 300
    php_value memory_limit 128M
    php_value post_max_size 16M
    php_value upload_max_filesize 2M
    php_value max_input_time 300
    php_value date.timezone Europe/Moscow

11. Restart apache web server:

    systemctl restart httpd

12. Disable SELinux:

    # cat /etc/selinux/config | grep SELINUX=d
    SELINUX=disabled

13. Default username/password is Admin/zabbix.