Hi Tam, welcome to Linux Server Talk.
Yum uses the GPG key for security purposes to validate packages that you choose to download/install. I believe the key is on the CD that you make from the ISO download, in the root directory the file is called RPM-GPG-KEY.
It's probably just easier to install it online, though. You can do that with the following command:
Code:
rpm --import http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-3
Once that is done you shouldn't have any more GPG key issues/messages when using Yum
Quote:
Originally Posted by tam
Would these disks when install would have gcc compiler already built on it?
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I don't recall the exact option, but when you are installing CentOS one of the options on the 'package group selection' screen will install gcc. It's probably called 'programming tools', 'development tools' or something like that. I don't recall exactly. Probably nothing to worry about installing during the main install process as it can be easily added later on once you have the gpg key issue taken care of.
