因为安全补丁或者小升级的原因，需要更新zabbix server和agent，可以使用如下方式。

sudo apt update

upgrade Zabbix minor version, run:  

sudo apt install --only-upgrade 'zabbix*'  

To upgrade Zabbix server minor version only, run:

sudo apt install --only-upgrade 'zabbix-server*'  

To upgrade Zabbix agent minor version only, run:  

sudo apt install --only-upgrade 'zabbix-agent*'  

or, for Zabbix agent 2: 

sudo apt install --only-upgrade 'zabbix-agent2*'