Error when trying to renew certificate using docker certbot

[ma7gdp]

Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. crt.sh | example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.

My domain is: ma7gdp.duckdns.org

I ran this command:

docker run -it --rm --name certbot -v ":/etc/letsencrypt" -v ":/var/lib/letsencrypt" -p "28443:443" -p "28080:80" certbot/certbot certonly -d ma7gdp.duckdns.org --standalone

It produced this output:

Saving debug log to /var/log/letsencrypt/letsencrypt.log
An unexpected error occurred:
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='acme-v02.api.letsencrypt.org', port=443): Max retries exceeded with url: /directory (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x7fecb1639990>: Failed to establish a new connection: [Errno -3] Try again'))
Ask for help or search for solutions at https://community.letsencrypt.org. See the logfile /var/log/letsencrypt/letsencrypt.log or re-run Certbot with -v for more details.

My web server is (include version): official certbot docker container image

The operating system my web server runs on is (include version): Debian host

My hosting provider, if applicable, is: n/a local home server

I can login to a root shell on my machine (yes or no, or I don't know): yes

Thanks in advance for any help.
Cheers.

[ma7gdp]

JFYI I ran the debug here: Let's Debug and it was showing as OK, so I am pretty sure it is not a firewall issue.
I just stood up a temporary nginx server on the same ports via docker to run this debug, but it is no longer running incase anyone tried to run the debug test again.

[orangepizza]

where port 28xxx proxyed to? unless port ma6gdp..duckdns.org:80 from outside goes to certbot, it won't work=
you may better to use other client

[ma7gdp]

If you hit 80 from external it is forwarded to 28080 and picked up by certbot container and port mapped back to 80. This all worked ok for the last time I renewed, so not sure what is happening.

[Osiris]

It seems to have trouble to make an outgoing connection to the ACME API.

That said, I don't know anything about Docker, so no idea on how to debug or fix that.. Perhaps it's as simple as the error message suggest: try again.

[ma7gdp]

Well if in doubt then reboot I guess. Seems to have done the trick. I made no changes, just rebooted and it started working. Not great when that happens as you never find out the real cause, but happy its working Thanks all for replies.