Error downloading packages:
  zabbix-web-4.4.4-1.el7.noarch: [Errno 256] No more mirrors to try.
  zabbix-server-mysql-4.4.4-1.el7.x86_64: [Errno 256] No more mirrors to try.
  zabbix-agent-4.4.4-1.el7.x86_64: [Errno 256] No more mirrors to try.
 

方法一、更新yum源

yum clean all
yum makecache
yum -y update

然后重新安装
 

方法二、yum安装提示的软件版本

上传需要的rpm软件包
解压 #rpm -ivh 
yum install -y zabbix-web-4.4.4-1.el7.noarch