Unable to Renew Certificate

[George]

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. https://crt.sh/?q=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: amarone.kyriacou.eu
I ran this command: certbot certonly --standalone --http-01-port 80 --dry-run -d amarone.kyriacou.eu --debug
It produced this output:
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator standalone, Installer None
Starting new HTTPS connection (1): acme-staging-v02.api.letsencrypt.org
Cert is due for renewal, auto-renewing…
Renewing an existing certificate
Performing the following challenges:
http-01 challenge for amarone.kyriacou.eu
Waiting for verification…
Challenge failed for domain amarone.kyriacou.eu
http-01 challenge for amarone.kyriacou.eu
Cleaning up challenges
Exiting abnormally:
Traceback (most recent call last):
File “/bin/certbot”, line 9, in
load_entry_point(‘certbot==0.35.1’, ‘console_scripts’, ‘certbot’)()
File “/usr/lib/python2.7/site-packages/certbot/main.py”, line 1379, in main
return config.func(config, plugins)
File “/usr/lib/python2.7/site-packages/certbot/main.py”, line 1262, in certonly
lineage = _get_and_save_cert(le_client, config, domains, certname, lineage)
File “/usr/lib/python2.7/site-packages/certbot/main.py”, line 115, in _get_and_save_cert
renewal.renew_cert(config, domains, le_client, lineage)
File “/usr/lib/python2.7/site-packages/certbot/renewal.py”, line 307, in renew_cert
new_cert, new_chain, new_key, _ = le_client.obtain_certificate(domains, new_key)
File “/usr/lib/python2.7/site-packages/certbot/client.py”, line 349, in obtain_certificate
orderr = self._get_order_and_authorizations(csr.data, self.config.allow_subset_of_names)
File “/usr/lib/python2.7/site-packages/certbot/client.py”, line 385, in _get_order_and_authorizations
authzr = self.auth_handler.handle_authorizations(orderr, best_effort)
File “/usr/lib/python2.7/site-packages/certbot/auth_handler.py”, line 90, in handle_authorizations
self._poll_authorizations(authzrs, max_retries, best_effort)
File “/usr/lib/python2.7/site-packages/certbot/auth_handler.py”, line 154, in _poll_authorizations
raise errors.AuthorizationError(‘Some challenges have failed.’)
AuthorizationError: Some challenges have failed.
Please see the logfiles in /var/log/letsencrypt for more details.

IMPORTANT NOTES:

• The following errors were reported by the server:

  Domain: amarone.kyriacou.eu
  Type: connection
  Detail: Fetching
  http://amarone.kyriacou.eu/.well-known/acme-challenge/omqRLjA5V77NlA5nzfWg3QFd6Js1wUyUS75tr5z2j-o:
  Timeout during connect (likely firewall problem)

  To fix these errors, please make sure that your domain name was
  entered correctly and the DNS A/AAAA record(s) for that domain
  contain(s) the right IP address. Additionally, please check that
  your computer has a publicly routable IP address and that no
  firewalls are preventing the server from communicating with the
  client. If you’re using the webroot plugin, you should also verify
  that you are serving files from the webroot path you provided.

My web server is (include version): apache 2.4 (defaults to a dokuwiki page)

The operating system my web server runs on is (include version): CentOS Linux release 7.6.1810

My hosting provider, if applicable, is: N/A

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

I’m using a control panel to manage my site (no, or provide the name and version of the control panel): No

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you’re using Certbot): certbot 0.35.1

Additional Information:
I was able to renew my cert, but a problem seems to have creeped in and I’m now stymied

Before issueing command:

systemctl stop httpd

netstat -ltnp | grep -w ‘:80’

and nothing listening

While certbot is on “Waiting for verification…” I can telnet to port 80 on my server. from the internet Also:

netstat -ltnp | grep -w ‘:80’

tcp6 0 0 :::80 :::* LISTEN 3476/python2

[JuergenAuer]

Hi @George

@George

My domain is: amarone.kyriacou.eu

your https works, your http doesn't answer ( amarone.kyriacou.eu - Make your website better - DNS, redirects, mixed content, certificates ):

Domainname	Http-Status	redirect	Sec.	G
• http://amarone.kyriacou.eu/
217.155.192.145	-14		10.046	T
Timeout - The operation has timed out
• http://www.amarone.kyriacou.eu/
217.155.192.145	-14		10.026	T
Timeout - The operation has timed out
• https://amarone.kyriacou.eu/
217.155.192.145	200		0.623	N
Certificate error: RemoteCertificateChainErrors
• https://www.amarone.kyriacou.eu/
217.155.192.145	200		0.390	N
Certificate error: RemoteCertificateNameMismatch, RemoteCertificateChainErrors
• http://amarone.kyriacou.eu/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
217.155.192.145	-14		10.027	T
Timeout - The operation has timed out
Visible Content:
• http://www.amarone.kyriacou.eu/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
217.155.192.145	-14		10.030	T
Timeout - The operation has timed out
Visible Content:

--standalone is hard to debug.

Isn't it possible to run a webserver on port 80, so you could use that?

Or is there a firewall or another blocking instance?

[George]

Thank you for your prompt reply. My server was not meant to server non-ssl connections (hence standalone certbot) but your reply and your link made me realise what the poroblem was (firewall misconfiguration).
Many thanks to you and to the Letsencrypt team for all their wonderfull work.