I post this in case we see something similar in HestiaCP
I don’t know if this affects HestiaCP, our cPanel server went down this morning due to a missing SSL certificate. We removed the offending domain and all is now well
Symptoms
You may come across a rare error where Nginx fails to load the SSL certificate for one of your domain. The error will cause the Nginx service to fail.
2021/07/19 07:04:16 [emerg] 6058#6058: cannot load certificate “/var/cpanel/ssl/apache_tls/mydomain.co.uk/combined”: BIO_new_file() failed (SSL: error:02001002:system library:fopen:No such file or directory:fopen(‘/var/cpanel/ssl/apache_tls/mydomain.co.uk/combined’,‘r’) error:2006D080:BIO routines:BIO_new_file:no such file)
Description
We’ve opened an internal case for our development team to investigate this further. For reference, the case number is CPANEL-37874. Follow this article to receive an email notification when a solution is published in the product.
Workaround
Remove then recreate the domain mentioned in the error message.