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:
I ran this command:
sudo certbot certonly --rsa-key-size 2048 --nginx --non-interactive -d prometheus.knstats.com --agree-tos --webroot-path /usr/share/nginx/html --email firstname.lastname@example.org
It produced this output:
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator nginx, Installer nginx
Cert is due for renewal, auto-renewing…
Renewing an existing certificate
Performing the following challenges:
tls-sni-01 challenge for prometheus.knstats.com
Waiting for verification…
Cleaning up challenges
Failed authorization procedure. prometheus.knstats.com (tls-sni-01): urn:ietf:params:acme:error:tls :: The server experienced a TLS error during domain verification :: remote error: tls: handshake failure
The following errors were reported by the server:
Detail: remote error: tls: handshake failure
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
you have an up-to-date TLS configuration that allows the server to
communicate with the Certbot client.
My web server is (include version):
The operating system my web server runs on is (include version):
Ubuntu server 16.04
My hosting provider, if applicable, is:
I can login to a root shell on my machine (yes or no, or I don’t know):
I’m using a control panel to manage my site (no, or provide the name and version of the control panel):
I used certbot for several months now. I am aware that certbot-nginx can only use http-01 to obtain cert, and this is the default challenge. I use the above command to obtain the cert several months ago. An now it closed to expire, but when I renew this I got the error. The log shows that it is using tls-sni-01 challenge despite the fact that I obtained the cert using http-01. I think that several months ago, http-01 is the default challenge type of nginx, and now it is tls-sni-01. It seems to be a regression to me, my certbot version is 0.26.1.
Also I think we need a Bug-report topic categories because my topic is a potential bug report.
Thanks in advanced!