While attempting to upgrade your SMA server the upgrade is cancelled reporting back that your MySQL CA certificate will expires within 90 days and needs to be renewed.
Example:
[date] [notice] ****************************************************************
[date] [notice] Please close this window and re-login to the appliance
[date] [notice] ****************************************************************
[date] [notice] ****************************************************************
[date] [notice] K1000 Server Update 14.0.334 ABORTED - Renew MySQL CA certificate - expires within 90 days
[date] [notice] NOTICE: Running kbox_upgrade.php part 1
[date] [notice] NOTICE: Beginning Pre-installation checks
[date] [kbin:apply] k1000_server_14.0.334.kbin