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:
iassist.ru
www.iassist.ru
current certificate crt.sh ID 3357996933
I ran this command:
certbot renew --dry-run
It produced this output:
Cert not due for renewal, but simulating renewal for dry run
Plugins selected: Authenticator webroot, Installer None
Renewing an existing certificate
Performing the following challenges:
http-01 challenge for iassist.ru
http-01 challenge for www.iassist.ru
Waiting for verification...
Challenge failed for domain iassist.ru
Challenge failed for domain www.iassist.ru
http-01 challenge for iassist.ru
http-01 challenge for www.iassist.ru
Cleaning up challenges
Attempting to renew cert (iassist.ru) from /etc/letsencrypt/renewal/iassist.ru.conf produced an unexpected error: Some challenges have failed.. Skipping.
Domain: iassist.ru
Type: connection
Detail: Fetching
http://iassist.ru/.well-known/acme-challenge/ROdY-0ZUybBa9d_u6v5Jr3UE0Bpea_3OUP8t0KpKYRQ:
Connection refused
My web server is (include version):
nginx/1.19.3
The operating system my web server runs on is (include version):
centos-release-8.2-2.2004.0.2.el8.x86_64
My hosting provider, if applicable, is:
no, this is a home system
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 1.9.0