. 修改host文件,添加本机的host记录 [root@RACDG ~]# vi /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 :: localhost localhost.localdomain localhost6 localhost6.localdomain6 . 修改/etc/sysctl.conf文件,添加如下几行 [root@RACDG ~]# vi /…