In order for Zabbix to receive information from hosts, an agent needs to be installed. Follow the following steps to install agents on Linux servers.
cd /tmp wget http://repo.zabbix.com/zabbix/3.2/ubuntu/pool/main/z/zabbix-release/zabbix-release_3.2-1+xenial_all.deb sudo dpkg -i zabbix-release_3.2-1+xenial_all.deb sudo apt-get update
sudo apt-get -y install zabbix-agent sudo systemctl enable zabbix-agent
sudo sed -i 's/ServerActive=127.0.0.1/ServerActive=###.###.###.###/g' /etc/zabbix/zabbix_agentd.conf
sudo systemctl start zabbix-agent