配置源
zabbix源在一般操作系统中，默认都不存在，需要我们手动添加
# CentOS 7 / RHEL 7 ###
rpm -ivh https://repo.zabbix.com/zabbix/4.0/rhel/7/x86_64/zabbix-release-4.0-1.el7.noarch.rpm
yum clean all
yum makecache
# CentOS 6 / RHEL 6 ###
rpm -ivh https://repo.zabbix.com/zabbix/4.0/rhel/6/x86_64/zabbix-release-4.0-1.el6.noarch.rpm
yum clean all
yum makecache
# Ubuntu 18.04 ###
wget https://repo.zabbix.com/zabbix/4.0/ubuntu/pool/main/z/zabbix-release/zabbix-release_4.0-2+bionic_all.deb
dpkg -i zabbix-release_4.0-2+bionic_all.deb
apt-get update
# Ubuntu 16.04 ###
wget https://repo.zabbix.com/zabbix/4.0/ubuntu/pool/main/z/zabbix-release/zabbix-release_4.0-2+xenial_all.deb
dpkg -i zabbix-release_4.0-2+xenial_all.deb
apt-get update
# Debian 9 ###
wget https://repo.zabbix.com/zabbix/4.0/debian/pool/main/z/zabbix-release/zabbix-release_4.0-2+stretch_all.deb
dpkg -i zabbix-release_4.0-2+stretch_all.deb
apt-get update
# Debian 8 ###
wget https://repo.zabbix.com/zabbix/4.0/debian/pool/main/z/zabbix-release/zabbix-release_4.0-2+jessie_all.deb
dpkg -i zabbix-release_4.0-2+jessie_all.deb
apt-get update
安装agent
上述源配置完成以后，我们就可以安装软件了：
# CentOS 7/6 & RHEL 7/6 ###
yum install -y zabbix-agent
# Ubuntu 18.04 / 16.04 & Debian 9/8 ###
apt-get install -y zabbix-agent
配置agent
agent配置主要配置三项，其他的可以保持默认：
Server=x.x.x.x
ServerActive=x.x.x.x
Hostname=x.x.x.x
如果服务器配置了dns，可以将Ip换成DNS解析的名称