You can renew an existing certificate by following these steps:
Click Server Certificates tab > Certificate Name > Renew button.
Validate Token Password.
Enter the password for the token if required. Otherwise click Next to continue.
Enter Validity Period.
Provide the validity period in months.
Review Certificate Details.
Review the certificate details.
This page provides you with the summary of selected options. Click Finish to complete the renewal process.
You must restart the administration server and node after the administration server certificates are renewed.