Dell iDRAC
To upload an SSL certificate and key:
$ racadm -r <ip of idrac> -u <username> -p <password> sslkeyupload -t 1 -f filename.key
$ racadm -r <ip of idrac> -u <username> -p <password> sslcertupload -t 1 -f filename.cer
Ref: https://serverfault.com/questions/485426/install-existing-ssl-certificate-on-dell-idrac7/489927#489927