How do I renew my Digital certificate on SMAX

Hi folks,

I have my smax with expired certificate and therefor it's not open a login page. I would like to get help on how to renew it.

SMAX running on CentOS with PostgreSQL.

My certificate was issued by DigiCert and now I need to install it on SMAX to be able to login to the from page.

Please advise..


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Nelson Chamba