Zabbix 5 has a lot of GUI imrovment and other new features, notice the installation on CentOS 8 is a little different. lets start .
If you are a fan of SELinux you can set it to permissive mode :
setenforce 0 && sed -i 's/^SELINUX=.*/SELINUX=permissive/g' /etc/selinux/config
To disable just edit with #nano /etc/selinux/config
And set :SELINUX=disabled
Next install libssh2.so.1 which is needed by zabbix 5
To use libssh2 you must enable the EPEL repo. After that libssh2 can be installed
yum install epel-release yum install libssh2
In case of develop environment you can install the libssh2-devel
yum install libssh2-devel
Then install zabbix
rpm -Uvh https://repo.zabbix.com/zabbix/5.4/rhel/8/x86_64/zabbix-release-5.4-1.el8.noarch.rpm
dnf clean all
dnf -y install zabbix-server-mysql zabbix-web-mysql zabbix-apache-conf zabbix-agent zabbix-sql-scripts
Now we have to add mysql server = mariaDB
dnf -y install mariadb-server && systemctl start mariadb && systemctl enable mariadb
configure the mysql server :
If your environment is going to monitor a lot of host , I recommend using MySQL database with file for each table, this option is going to help in reducing the database size in the future as the table can be controlled and all the data is spread. in the default setting the data is in one file ibdata1 which can be very big. So edit the file /etc/my.cnf :
[mysqld]
innodb_file_per_table
So Lets continue :
mysql_secure_installationCreate User & DB (notice the charset = utf8 which is required by zabbix 5)
mysql -u root -p
create database zabbix_db character set utf8 collate utf8_bin;
grant all privileges on zabbix_db.* to zabbix_user@localhost identified by 'zabbix' ;
flush privileges;
show create database zabbix_db; ->to make sure db is created O.K
exit
Temporary disable strict mode (ZBX-16465) to avoid MySQL error “ERROR 1118 (42000) at line 1284: Row size too large (> 8126)” :
#mysql -uroot -p'your_password you set for mysql' zabbix_db -e "set global innodb_strict_mode='OFF';"
build database :
#zcat /usr/share/doc/zabbix-sql-scripts/mysql/create.sql.gz | mysql zabbix_db -uzabbix_user -pzabbix
re-enable stric mode:
#mysql -uroot -p'your_password you set for mysql' zabbix_db -e "set global innodb_strict_mode='ON';"
configure Zabbix for the database we have prepared for it :
#nano /etc/zabbix/zabbix_server.conf
DBname=zabbix_db
DBuser=zabbix_user
DBPassword=zabbix
Start zabbix
#systemctl restart zabbix-server zabbix-agent
#systemctl enable zabbix-server zabbix-agent
Add firewall rules
#firewall-cmd --add-service={http,https} --permanent
#firewall-cmd --add-port={10051/tcp,10050/tcp} --permanent
#firewall-cmd --reload
Now lets start configure the web frontend
#nano /etc/php-fpm.d/zabbix.conf
php_value date.timezone Asia/Jerusalem
restart the website service :
#systemctl restart httpd php-fpm
#systemctl enable httpd php-fpm
Thats it ! Now open a browser and surf to
http://your_zabbix_server_IP/zabbix
Enter this variables
Database name : zabbix_db
user : zabbix_user
Password : zabbix