I don’t know if this is of any help, but here I tried to explain what I did to get letsencrypt certificates from nethserver automatically copied to nsdc AD container (separate machine from the one aquiring the certs in my case) everytime they get renewed and also to add them to opnsense router, so opnsense can query ad for user authentication in order to be able to restrict vpn access to ad users with additional 2fa in opnsense:
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