GPG key retrieval failed - Could not open/read file:///etc/pki/rpm-gpg/RPM-GPG-KEY-RHEL-6

Problem: Got this error while using yum install on Red Hat Enterprise Linux 6.2

# yum install ftp

Loaded plugins: product-id, security, subscription-manager

Updating certificate-based repositories.

Setting up Install Process

Resolving Dependencies

--> Running transaction check

---> Package ftp.x86_64 0:0.17-51.1.el6 will be installed

--> Finished Dependency Resolution

Dependencies Resolved

=================================================================================================================================================================================================================================

 Package                                          Arch                                                Version                                                      Repository                                               Size

=================================================================================================================================================================================================================================

Installing:

 ftp                                              x86_64                                              0.17-51.1.el6                                                redhat-dvd                                               57 k

Transaction Summary

=================================================================================================================================================================================================================================

Install       1 Package(s)

Total download size: 57 k

Installed size: 95 k

Is this ok [y/N]: y

Downloading Packages:

warning: rpmts_HdrFromFdno: Header V3 RSA/SHA256 Signature, key ID fd431d51: NOKEY

Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-RHEL-6

GPG key retrieval failed: [Errno 14] Could not open/read file:///etc/pki/rpm-gpg/RPM-GPG-KEY-RHEL-6

# 

Solution:

Edit your repo files under: /etc/yum.repos.d

Make sure the repo file you are trying to use has the right gpgkey

For example, i was using the wrong gpgkey in this file:

# ls -ltr

total 20

-rw-r--r--. 1 root root   78 Jul 15 20:07 redhat.repo

-rw-r--r--. 1 root root  154 Jul 15 20:07 redhat-dvd.repo

-rw-r--r--. 1 root root  957 Nov  5  2012 epel.repo

-rw-r--r--. 1 root root 1056 Nov  5  2012 epel-testing.repo

-rw-r--r--. 1 root root  529 Nov  8  2011 rhel-source.repo

# 

I compared with the gpgkey in rhel-source.repo and editted redhat-dvd.repo to have the same key as below:

# more redhat-dvd.repo 

[redhat-dvd]

name=RHEL-$releasever - dvd 

baseurl=file:///media/redhat-dvd

gpgcheck=1

enabled=1

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release