Ошибка по невнимательности при настройке Let’s Encrypt. Были созданы сертификаты на несуществующие домены. Далее в конфигурации Nginx домен был изменен и пересозданы сертификаты, но настройки Let’s Encrypt для продления сертификатов остались.
По этой причине при выполнении процесса обновления сертификатов постоянно сыпались ошибки. Для исправления нужно удалить конфиги для несуществующих доменов в каталоге /etc/letsencrypt/renewal/
Saving debug log to /var/log/letsencrypt/letsencrypt.log Cert not yet due for renewal Cert not yet due for renewal Cert not yet due for renewal Cert not yet due for renewal Cert not yet due for renewal Cert is due for renewal, auto-renewing... Starting new HTTPS connection (1): acme-v01.api.letsencrypt.org Renewing an existing certificate Performing the following challenges: http-01 challenge for a.codebeer.ru Waiting for verification... Cleaning up challenges Attempting to renew cert from /etc/letsencrypt/renewal/a.codebeer.ru.conf produced an unexpected error: Failed authorization procedure. a.codebeer.ru (http-01): urn:acme:error:dns :: DNS problem: NXDOMAIN looking up A for a.codebeer.ru. Skipping. Cert is due for renewal, auto-renewing... Starting new HTTPS connection (1): acme-v01.api.letsencrypt.org Renewing an existing certificate Performing the following challenges: http-01 challenge for b.codebeer.ru Waiting for verification... Cleaning up challenges Attempting to renew cert from /etc/letsencrypt/renewal/b.codebeer.ru.conf produced an unexpected error: Failed authorization procedure. b.codebeer.ru (http-01): urn:acme:error:dns :: DNS problem: NXDOMAIN looking up A for b.codebeer.ru. Skipping. Cert not yet due for renewal Cert is due for renewal, auto-renewing... Starting new HTTPS connection (1): acme-v01.api.letsencrypt.org Renewing an existing certificate Performing the following challenges: http-01 challenge for c.codebeer.ru Waiting for verification... Cleaning up challenges Attempting to renew cert from /etc/letsencrypt/renewal/c.codebeer.ru.conf produced an unexpected error: Failed authorization procedure. c.codebeer.ru (http-01): urn:acme:error:dns :: DNS problem: NXDOMAIN looking up A for c.codebeer.ru. Skipping. Cert not yet due for renewal 3 renew failure(s), 0 parse failure(s)