The validity of a CDF certificate is one year. If you do not upgrade the CDF certificate within one year, the certificate will expire and you must renew the certificate. The CDF certificates can be renewed before and after expiration.
CDF contains the following certificates:
Internal certificates, which are used within the cluster nodes, such as client.crt, client.key, server.crt, server.key, kubernetes.crt, and kubernetes.key.
External certificates, which are used for the ingress service of the CDF Management Portal.