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I want to generate a proper certificate for iLO web console (iLO is a management engine for HP servers) using letsencrypt. AFAIK there's no way to install private key into iLO, so I've generated CSR from iLO. It contains the following field:

Requested Extensions:
    X509v3 Subject Alternative Name: 
        DNS:ilo.example.com, IP Address:192.168.1.11

I've found no way to exclude IP Address part from CSR. I don't need it, I'll use only ilo.example.com. Now I issued

certbot certonly --manual --staging --preferred-challenges=dns --csr csr 

command, completed DNS verification, but got error:

An unexpected error occurred:
The request message was malformed :: Error creating new cert :: CSR contains one or more IP address fields
Please see the logfiles in /var/log/letsencrypt for more details.

AFAIK CSR is signed by private key, so I can't edit it. Can I ask letsencrypt to ignore IP address and issue certificate only for ilo.example.com? Or is there other way?

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Here you go: https://community.letsencrypt.org/t/how-to-automatic-certificate-install-on-an-hp-ilo4-management-processor/31038

  1. Generate CSR
  2. Submit CSR to LE
  3. Install resulting cert

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