Updating Entitlement Certificates

Open the CentOS Customer Portal.

https://access.redhat.com/

Click the Subscriptions tab to open the subscriptions menu, and select the Consumers List option under Certificate-Based Management.
Click the system name in the list of consumers.
Open the Applied Subscriptions tab for the list of all active, assigned subscriptions for the consumer.
Click the Download All Certificates button above the list of subscriptions. If there is only one subscription, then click the Download button by the certificate.

To retrieve an individual entitlement certificate, click the Download link in the subscription row.
If all entitlement certificates were downloaded in an archive file, then there are multiple archives in the downloaded certificates.zip file. Unzip the directories until the PEM files for the entitlement certificates are available.

Import the certificate PEM file. This can be done using the Import Certificates button in the Subscription Manager GUI or using the import command:

# subscription-manager import --certificate=/tmp/export/entitlement_certificates/596576341785244687.pem --certificate=/tmp/export/entitlement_certificates/3195996649750311162.pem
Successfully imported certificate 596576341785244687.pem
Successfully imported certificate 3195996649750311162.pem