yum update
[root@ikm274l ~]# yum update
Loaded plugins: aliases, changelog, kabi, presto, product-id, refresh-packagekit, rhnplugin, search-disabled-repos, security, subscription-manager, tmprepo, verify, versionlock
Network error code: 400
The certificate /usr/share/rhn/RHNS-CA-CERT is expired. Please ensure you have the correct certificate and your system time is correct.
[root@ikm274l ~]#
Kindly advise, how will I update the cert