On 09/03/2012 12:40 AM, Mail List wrote:

Hi Guys,

Just found an issue with CentOS 6.3. The network is getting inaccessible at times. The server has been installed with CentOS 6 and then package upgrade was performed.

= [~]# cat /etc/redhat-release CentOS release 6.3 (Final) [~]# = = [~]# uname -r 2.6.32-279.5.2.el6.x86_64 [~]# =

The server is up for most of the time. But the next day when we check the server is inaccessible over network (through SSH). This happens often now.

Do you have any suggestions? Is it a CentOS 6.3 bug?

Regards Joby

Not much info to go on here.

Look in /var/log/messages, starting when you know the connection was up until you knew it was down. Look for messages regarding the network, drivers or anything else that might give you a clue.

If you want more specific help, you need to ask more complete questions. What kind of hardware do you have? What is the network card plugged into? If it's a managed switch, look at it's logs to see if it says anything about the given port.

http://www.catb.org/esr/faqs/smart-questions.html#beprecise