Problems creating SSL cert in Nginx Proxy Manager

Help
1

Hi everyone, Im pretty new ins this kind of stuff, my first serf hosted project is a server running Debian in a raspberry pi 4.

I was able to install Portainer GUI. Using it I installed Heimdal and I was trying to install vaultwarden, but I see it needs the HTTPS. (Sorry if my question is too "noob", I have really never did nothing like this) I follow this video Quick and Easy Local SSL Certificates for Your Homelab!.

I create an account on Duck DNS, with my address for mylab.duckdns.org. In the current IP o add the ip address that my server is running locally.

On cloudflare > records > add a record I create 2
1 - Type A - Name mylab.duckdns.org - IPv4 the same IP address from Duck DNS
2 - Type CNAME - name * - target mylab.duckdns.org

on nginx proxy manager > SSL certificates > add SSL certificate
Domain names: mylab.duckdns.org, *.mylab.duckdns.org
Email: my email
Use dns challene: Duck DNS
Credentials File Content: dns_duckdns_token=<>
Propagation Seconds: first time in blank, second 120 sec.

And this is the error message I received:

CommandError: Saving debug log to /tmp/letsencrypt-log/letsencrypt.log
Some challenges have failed.
Ask for help or search for solutions at https://community.letsencrypt.org. See the logfile /tmp/letsencrypt-log/letsencrypt.log or re-run Certbot with -v for more details.

at /app/lib/utils.js:16:13
at ChildProcess.exithandler (node:child_process:430:5)
at ChildProcess.emit (node:events:518:28)
at maybeClose (node:internal/child_process:1104:16)
at ChildProcess._handle.onexit (node:internal/child_process:304:5)

I'm sorry if I don't following the standards of posting. I know I have a lot to learn but I really appreciate if anyone here could help me.

Thank you

Leandro Freitas

2

Here I used the Token from Duck DNS instead of <>

3

Hello @LCFreitas, welcome to the Let's Encrypt community. :slightly_smiling_face:

Using the online tool Let's Debug yields these results https://letsdebug.net/mylab.duckdns.org/2373544

image
image1004×582 9.31 KB

And DNSSEC Debugger - mylab.duckdns.org shows

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image639×774 31.5 KB

It is as if the domain name mylab.duckdns.org does not exist.
Or possibly that DuckDNS.org is having significant issues with their Name Servers.

Edit

And this may help others try to debug this issue mylab.duckdns.org | DNSViz

4

Thank you for you fast reply. I will try to see any other free service of DNS. besides of it, if possible. do you think all my other steps are correct?

Thank you again