On Sat, Oct 16, 2010 at 12:21 PM, Ritika Garg ritikagarg25@gmail.com wrote:
Before doing "yum update" on system which has CentOS5.3, I gave "yum list updates" but the following message comes: Loaded plugins: fastestmirror Determining fastest mirrors Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=5&arch=x86_64&repo=os error was [Errno 4] IOError: <urlopen error (110, 'Connection timed out')> Error: Cannot find a valid baseurl for repo: base
Check whether the system has internet connectivity, verify if the nameservers have been listed in /etc/resolv.conf and if the system connects to the net through a proxy server, specify proxy settings in /etc/yum.conf. These could be the basic reasons for this error to appear.
-- Manish Kathuria