执行RHN升级时出错

giggs101

错误信息如下:
Error Message:
    Demo service for server 1004293414 limited due to high load
Error Class Code: 51
Error Class Info:
     Demo service currently disabled due to high load. If you would like
     to see Red Hat's policies on Demo service, or find out how you can
     purchase a subscription service and receive priority download access,
     please go to http://rhn.redhat.com/preview/index.pxt
以前还可以升级,不知道怎会出现这个问题,怎样解决呢?望指点
另外用什么命令看IP地址的呢?

天外闲云

1、apt升级。
2、ifconfig