ZABBIX Server v3.0 installation on CentOS7 Step-By-Step manual

1. OS
a. Linux CentOS 7
b. Update it
c. Prerequisites
d. Database
e. Secure it

2. Zabbix 3.0 using MySQL database, MariaDB
a. install Zabbix
b. connect to database
c. configure front-end
d. secure server
e. finish configuration


# Install basic server and configure it

# Set IP and activate adapters if required
nmtui

#connect using SSH/Telnet

# Change time zone if not done jet
ln -s /usr/share/zoneinfo/Europe/Riga /etc/localtime

#Check swap file
free -m

#Create swap file
dd if=/dev/zero of=/swapfile1 bs=1024 count=524288
chown root:root /swapfile1
chmod 0600 /swapfile1
mkswap /swapfile1
swapon /swapfile1
free -m

# To activate /swapfile1 after Linux system reboot
vi /etc/fstab
#Append the following line:
/swapfile1 none swap sw 0 0

# Update CentOS - take some ~5-10 minutes..
yum update -y

# Install some useful packages
yum install vim -y

#Install MySQL fork Mariadb
yum install mariadb-server -y

# Edit MySQL config file and add innodb_file_per_table under [mysqld] section
innodb_file_per_table

#Start MySQL and secure it (by default database root has no password)
systemctl start mariadb
mysql_secure_installation

#create zabbix database and user
mysql -p
CREATE DATABASE zabbix CHARACTER SET utf8 COLLATE utf8_bin;
flush privileges;
exit

#Installation of Firewall
yum install firewalld -y
systemctl unmask firewalld
systemctl enable firewalld
systemctl start firewalld

# allow connections to ports 10051 (Zabbix server), 10050 (Zabix agent), 80 (HTTP) 443 (HTTPS) in firewalld
firewall-cmd --permanent --zone=public --add-port=10051/tcp
firewall-cmd --permanent --zone=public --add-port=10050/tcp
firewall-cmd --permanent --zone=public --add-port=80/tcp
firewall-cmd --permanent --zone=public --add-port=443/tcp
firewall-cmd --reload

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# Install Zabbix packages on CentOS/RHEL 7

# Download Zabbix 3.0 configuration package

# Install Zabbix packages
yum install zabbix-server-mysql zabbix-web-mysql zabbix-agent zabbix-get zabbix-sender zabbix-java-gateway -y

# Import initial DB schema and data (Zabbix version can be different, so check folder name)
cd /usr/share/doc/zabbix-server-mysql-3.0.3

DBHost=localhost (better change to IP)
DBName=zabbix
DBUser=zabbix
DBPassword=your password for DB user "zabbix"

# Edit PHP timezone

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 always_populate_raw_post_data -1

# After changing the configuration file restart the apache web server.
systemctl start httpd

# Start Zabbix server process
systemctl start zabbix-server

#check the status
systemctl status zabbix-server -l

# Start Zabbix agent process.
systemctl start zabbix-agent

# Set SELinux settings - recommended, but can make trouble if not configured))
getenforce
setsebool -P httpd_can_network_connect=1
setsebool -P httpd_can_connect_zabbix=1
setsebool -P zabbix_can_network=1

getsebool -a | grep zabbix
getsebool -a | grep httpd_can_network_connect

# Add all Zabbix services to server startup
systemctl list-unit-files

systemctl enable mariadb


Default user: Admin
password: zabbix

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