Add Zabbix Agent

1. 添加第三方源进行安装
   CentOS/RHEL 7:
   # rpm -Uvh http://repo.zabbix.com/zabbix/2.2/rhel/7/x86_64/zabbix-release-2.2-1.el7.noarch.rpm
   CentOS/RHEL 6:
   # rpm -Uvh http://repo.zabbix.com/zabbix/2.2/rhel/6/x86_64/zabbix-release-2.2-1.el6.noarch.rpm
   CentOS/RHEL 5:
   # rpm -Uvh http://repo.zabbix.com/zabbix/2.2/rhel/5/x86_64/zabbix-release-2.2-1.el5.noarch.rpm
2. 安装Zabbix Agent
   yum -y install zabbix zabbix-agent
3. 修改zabbix Agent配置
   vi /etc/zabbix/zabbix_agentd.conf
   Server=127.0.0.1
   ServerActive=127.0.0.1
   Hostname= server 1
   Server 和 ServerActive 都指定 zabbixserver 的 IP 地址
   客户机需开启10050端口
4. 重启zabbix agent 服务
   service zabbix-agent restart